Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Jun. 30, 2018	Jul. 31, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	KVH INDUSTRIES INC \DE\
Entity Central Index Key	0001007587
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Amendment Flag	false
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--06-30
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		17,664,348

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 34,537	$ 34,596
Marketable securities	335	8,319
Accounts receivable, net of allowance for doubtful accounts of $2,489 and $2,852 as of June 30, 2018 and December 31, 2017, respectively	29,837	28,316
Inventories	22,912	22,732
Current contract assets	3,419	0
Prepaid expenses and other current assets	3,339	3,816
Total current assets	94,379	97,779
Property and equipment, less accumulated depreciation of $54,096 and $51,099 as of June 30, 2018 and December 31, 2017, respectively	50,069	43,521
Intangible assets, less accumulated amortization of $22,799 and $20,656 as of June 30, 2018 and December 31, 2017, respectively	12,743	15,120
Goodwill	33,237	33,872
Other non-current assets	6,735	5,927
Non-current contract assets	6,266	0
Non-current deferred income tax asset	198	20
Total assets	203,627	196,239
Current liabilities:
Accounts payable	16,775	15,736
Accrued compensation and employee-related expenses	4,866	5,358
Accrued other	8,289	9,210
Accrued product warranty costs	2,039	2,074
Deferred revenue	0	6,919
Current portion of long-term debt	4,990	2,482
Contract liabilities	11,051	0
Liability for uncertain tax positions	1,444	1,570
Total current liabilities	49,454	43,349
Other long-term liabilities	2,213	19
Long-term contract liabilities	8,374	0
Non-current deferred income tax liability	2,580	2,634
Long-term debt, excluding current portion	38,575	44,572
Total liabilities	101,196	90,574
Stockholders’ equity:
Preferred stock, $0.01 par value. Authorized 1,000,000 shares; none issued	0	0
Common stock, $0.01 par value. Authorized 30,000,000 shares; 18,936,639 and 18,787,816 shares issued at June 30, 2018 and December 31, 2017, respectively; and 17,654,217 and 17,128,825 shares outstanding at June 30, 2018 and December 31, 2017, respectively	189	188
Additional paid-in capital	137,508	134,361
Accumulated deficit	(12,401)	(4,417)
Accumulated other comprehensive loss	(12,701)	(11,317)
Stockholders Equity Before Treasury Stock Adjustment	112,595	118,815
Less: treasury stock at cost, common stock, 1,282,422 and 1,658,991 shares as of June 30, 2018 and December 31, 2017, respectively	(10,164)	(13,150)
Total stockholders’ equity	102,431	105,665
Total liabilities and stockholders’ equity	$ 203,627	$ 196,239

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ (2,489)	$ (2,852)
Property and equipment, accumulated depreciation	(54,096)	(51,099)
Intangible assets, accumulated amortization	$ (22,799)	$ (20,656)
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	18,936,639	18,787,816
Common stock, shares outstanding	17,654,217	17,128,825
Treasury stock, shares outstanding	1,282,422	1,658,991

Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Sales:
Product	$ 16,162	$ 14,323	$ 30,154	$ 29,186
Service	27,230	26,126	53,339	51,474
Net sales	43,392	40,449	83,493	80,660
Costs and expenses:
Costs of product sales	10,094	9,295	19,017	19,834
Costs of service sales	15,498	13,094	29,314	26,362
Research and development	3,565	3,761	7,499	7,708
Sales, marketing and support	8,494	8,124	17,435	16,864
General and administrative	6,928	7,543	14,595	15,730
Total costs and expenses	44,579	41,817	87,860	86,498
Loss from operations	(1,187)	(1,368)	(4,367)	(5,838)
Interest income	155	159	303	325
Interest expense	428	349	837	702
Other income (expense), net	446	(112)	172	(180)
Loss before income tax expense	(1,014)	(1,670)	(4,729)	(6,395)
Income tax expense	329	356	507	516
Net loss	$ (1,343)	$ (2,026)	$ (5,236)	$ (6,911)
Net loss per common share
Earnings Per Share, Basic and Diluted	$ (0.08)	$ (0.12)	$ (0.31)	$ (0.42)
Weighted average number of common shares outstanding:
Weighted Average Number of Shares Outstanding, Basic	17,140	16,446	16,942	16,354
Weighted Average Number of Shares Outstanding, Basic and Diluted		16,446	16,942	16,354
Diluted	17,140	16,446	16,942	16,354

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (1,343)	$ (2,026)	$ (5,236)	$ (6,911)
Other comprehensive (loss) income, net of tax:
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	0	(3)	1	(3)
Foreign currency translation adjustment	(3,866)	2,440	(1,422)	3,041
Unrealized gain on derivative instruments, net	15	18	37	45
Other comprehensive (loss) income, net of tax(1)	(3,851)	2,455	(1,384)	3,083
Total comprehensive (loss) income	$ (5,194)	$ 429	$ (6,620)	$ (3,828)

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Changes in Accrued Liabilities Related to Fixed Asset Additions	$ 624	$ 1,452
Deferred purchase price consideration related to asset acquisition included in accrued expenses	0	50
Cash flows from operating activities:
Net income (loss)	(5,236)	(6,911)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Provision for doubtful accounts	129	294
Depreciation and amortization	6,288	5,477
Deferred income taxes	24	0
Gain (Loss) on Disposition of Property Plant Equipment	0	3
Compensation expense related to stock-based awards and employee stock purchase plan	1,592	1,812
Unrealized currency translation gain	(212)	(119)
Changes in operating assets and liabilities:
Accounts receivable	(1,719)	4,051
Inventories	(137)	(2,661)
Prepaid expenses, other current assets, and current contract assets	230	(49)
Other non-current assets and non-current contract assets	(1,252)	(577)
Accounts payable	908	2,345
Deferred revenue, contract liabilities, and long-term contract liabilities	527	3,004
Accrued compensation, product warranty, and other	(2,331)	397
Other long-term liabilities	(9)	(294)
Net cash (used in) provided by operating activities	(1,198)	6,772
Cash flows from investing activities:
Capital expenditures	(7,461)	(6,809)
Cash paid for acquisition of intangible asset	0	(50)
Purchases of marketable securities	(2,036)	(7,348)
Maturities and sales of marketable securities	10,020	19,286
Net cash provided by investing activities	523	5,079
Cash flows from financing activities:
Repayments of long-term debt	(89)	(1,561)
Payments of employee restricted stock withholdings	0	392
Proceeds From Stock Options Exercised and Employee Stock Purchase Plan	101	1,268
Repayments of Long-term loan	3,400	8,200
Proceeds from Sale of Treasury Stock	4,500	0
Repayments of Long-term Capital Lease Obligations	(258)	0
Net cash provided by (used in) financing activities	854	(8,885)
Effect of exchange rate changes on cash and cash equivalents	(238)	1,043
Net (decrease) increase in cash and cash equivalents	(59)	4,009
Cash and cash equivalents at beginning of period	34,596	26,422
Cash and cash equivalents at end of period	$ 34,537	$ 30,431

Description of Business

6 Months Ended

Jun. 30, 2018

Description of Business [Abstract]

Description of Business

KVH Industries, Inc. (together with its subsidiaries, the Company or KVH) is a leading manufacturer of solutions that provide global high-speed Internet, television, and voice services via satellite to mobile users at sea and on land. KVH is also a leading provider of commercially licensed entertainment, including news, sports, music, and movies, to commercial and leisure customers in the maritime, hotel, and retail markets. In addition, the Company develops and distributes training films and eLearning computer-based training courses to commercial maritime customers. KVH is also a premier manufacturer of high-performance navigational sensors and integrated inertial systems for defense and commercial applications. KVH’s reporting segments are as follows:


•	the mobile connectivity segment and


•	the inertial navigation segment

KVH’s mobile connectivity products enable customers to receive voice services, Internet services, and live digital television via satellite services in marine vessels, recreational vehicles, buses and automobiles. KVH’s CommBox offers a range of tools designed to increase communication efficiency, reduce costs, and manage network operations. KVH sells and leases its mobile connectivity products through an extensive international network of dealers and distributors. KVH also sells and leases products directly to end users. In October 2017, KVH introduced a new 60-cm diameter TracPhone V7-HTS Ku-band antenna which is designed to deliver faster data speeds globally to the maritime market. KVH is able to offer download/upload speeds as fast as 10 Mbps/3 Mbps by combining KVH’s proprietary antenna system design and industry-leading mini-VSAT Broadband network, along with partnering with Intelsat Epic satellite services for high throughput satellite (HTS) capabilities and additional capacity from SKY Perfect JSAT satellites. With the HTS network, the Company added an additional 25 million square miles to our global maritime Ku-band high-speed connectivity footprint.

KVH’s mobile connectivity service sales primarily represent sales earned from satellite voice and Internet airtime services. KVH provides, for monthly fixed and usage fees, satellite connectivity services, including broadband Internet, data and VoIP services, to its TracPhone V-series customers. In the second quarter of 2017, the Company launched a new mini-VSAT Broadband service offering, AgilePlans, which is a monthly subscription model providing global connectivity to commercial maritime customers, including hardware, installation, broadband Internet, Voice over Internet Protocol (VoIP), entertainment and training content and global support for a monthly fee with no minimum commitment. KVH offers AgilePlans customers a variety of airtime data plans with varying data speeds and fixed data usage levels with overage charges per megabyte, which is similar to the plans that the Company offers to its other customers. The Company recognizes the monthly subscription fee as service revenue over the service delivery period. The Company retains ownership of the hardware that it provides to AgilePlans customers, who must return the hardware to KVH if they decide to terminate the service. Because KVH does not sell the hardware under AgilePlans, the Company does not recognize any product revenue when the hardware is deployed to an AgilePlans customer. KVH records the cost of the hardware used by AgilePlans customers as revenue-generating assets and depreciates the cost over an estimated useful life of five years. Since the Company is retaining ownership of the hardware, it does not accrue any warranty costs for AgilePlans hardware; however, any maintenance costs on the hardware are expensed in the period these costs are incurred. Mobile connectivity service sales also include the distribution of commercially licensed entertainment, including news, sports, music, and movies to commercial and leisure customers in the maritime, hotel, and retail markets through KVH Media Group, and the distribution of training films and eLearning computer-based training courses to commercial customers in the maritime market through Super Dragon Limited and Videotel Marine Asia Limited (together referred to as Videotel). KVH also earns monthly usage fees from third-party satellite connectivity services, including voice, data and Internet services, provided to its Inmarsat and Iridium customers who choose to activate their subscriptions with KVH. Mobile connectivity service sales also include engineering services provided under development contracts, sales from product repairs, and extended warranty sales.

KVH's inertial navigation products offer precision fiber optic gyro (FOG)-based systems that enable platform and optical stabilization, navigation, pointing and guidance. KVH’s inertial navigation products also include tactical navigation systems that provide uninterrupted access to navigation and pointing information in a variety of military vehicles, including tactical trucks and light armored vehicles. KVH’s inertial navigation products are sold directly to U.S. and foreign governments and government contractors, as well as through an international network of authorized independent sales representatives. In addition, KVH's inertial navigation technology is used in numerous commercial products, such as navigation and positioning systems for various applications including precision mapping, dynamic surveying, autonomous vehicles, train location control and track geometry measurement systems, industrial robotics and optical stabilization.

KVH’s inertial navigation service sales include product repairs, engineering services provided under development

contracts and extended warranty sales.

Significant Accounting Policies	6 Months Ended
Significant Accounting Policies	Jun. 30, 2018
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	Summary of Significant Accounting Policies Basis of Presentation The accompanying consolidated financial statements of KVH Industries, Inc. and its wholly owned subsidiaries have been prepared in accordance with accounting principles generally accepted in the United States of America. The Company has evaluated all subsequent events through the date of this filing. All significant intercompany accounts and transactions have been eliminated in consolidation. The consolidated financial statements have not been audited by the Company’s independent registered public accounting firm and include all adjustments (consisting of only normal recurring adjustments) which are, in the opinion of management, necessary for a fair presentation of the financial condition, results of operations, and cash flows for the periods presented. These consolidated financial statements do not include all disclosures associated with annual financial statements and accordingly should be read in conjunction with the Company’s consolidated financial statements and related notes included in the Company’s annual report on Form 10-K for the year ended December 31, 2017 filed on March 2, 2018 with the Securities and Exchange Commission. The results for the three and six months ended June 30, 2018 are not necessarily indicative of operating results for the remainder of the year. Significant Estimates and Assumptions and Other Significant Non-Recurring Transactions The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of sales and expenses during the reporting periods. As described in the Company’s annual report on Form 10-K, the most significant estimates and assumptions by management affect the Company’s revenue recognition, valuation of accounts receivable, valuation of inventory, valuations and deferred purchase price consideration related to asset acquisition, expected future cash flows including growth rates, discount rates, terminal values and other assumptions and estimates used to evaluate the recoverability of long-lived assets and goodwill, estimated fair values of long-lived assets, including goodwill, amortization methods and periods, certain accrued expenses and other related charges, stock-based compensation, contingent liabilities, key valuation assumptions for its share-based awards, estimated fulfillment costs for warranty obligations, tax reserves and recoverability of the Company’s net deferred tax assets and related valuation allowance. The Company has reviewed these estimates and determined that these remain the most significant estimates for the six months ended June 30, 2018. Although the Company regularly assesses these estimates, actual results could differ materially from these estimates. Changes in estimates are recorded in the period in which they become known. The Company bases its estimates on historical experience and various other assumptions that it believes to be reasonable under the circumstances.

Recently Announced Accounting Pronouncements	6 Months Ended
Recently Announced Accounting Pronouncements	Jun. 30, 2018
Significant Accounting Policies [Abstract]
New Accounting Pronouncements, Policy [Text Block]	ASC Update No. 2016-02 In February 2016, the FASB issued ASC Update No. 2016-02, Leases (Topic 842). It is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Earlier application is permitted. Update No. 2016-02 creates new accounting and reporting guidelines for leasing arrangements. The new guidance requires organizations that lease assets to recognize assets and liabilities on the balance sheet related to the rights and obligations created by those leases, regardless of whether they are classified as finance or operating leases. Consistent with current guidance, the recognition, measurement, and presentation of expenses and cash flows arising from a lease primarily will depend on its classification as a finance or operating lease. The guidance also requires new disclosures to help financial statement users better understand the amount, timing, and uncertainty of cash flows arising from leases. The new standard is to be applied using a modified retrospective approach. The Company is currently evaluating the impact of the new pronouncement on its financial statements. Based on its preliminary assessment, upon adoption the Company expects to recognize significant right-to-use assets and corresponding lease liabilities on its balance sheet related to leased facilities and equipment. ASC Update No. 2016-13 In June 2016, the FASB issued ASC Update No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. The update is effective for fiscal years beginning after December 15, 2019. Early adoption is permitted for fiscal years beginning after December 15, 2018. The purpose of Update No. 2016-13 is to replace the current incurred loss impairment methodology for financial assets measured at amortized cost with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information, including forecasted information, to develop credit loss estimates. The adoption of Update No. 2016-13 is not expected to have a material impact on the Company's financial position or results of operations. ASC Update No. 2017-12 In August 2017, the FASB issued ASC Update No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. The update is effective for annual periods beginning after December 15, 2018. Early adoption is permitted. The purpose of Update No. 2017-12 is to improve the presentation and disclosure requirements for, and simplify the application and increase transparency of hedge accounting. The adoption of Update No. 2017-12 is not expected to have a material impact on the Company's financial position or results of operations. ASC Update No. 2018-07 In June 2018, the FASB issued ASC Update No. 2018-07, Compensation-Stock Compensation (Topic 718) Improvements to Nonemployee Share-Based Payment Accounting. The update is effective for annual periods beginning on or after December 15, 2018. Early adoption is permitted. The purpose of Update No. 2018-07 is to expands the scope of the employee share-based payments guidance to include share-based payments issued to nonemployees. The Company expects that the adoption of this standard will only affect, on a prospective basis, the manner in which the Company evaluates any changes to the terms or conditions of its share-based payment awards. There are no other recent accounting pronouncements issued by the FASB that are expected to have a material impact on the Company's financial statements.

Marketable Securities Marketable Securities

6 Months Ended

Jun. 30, 2018

Marketable Securities [Abstract]

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

Marketable Securities

Marketable securities as of June 30, 2018 and December 31, 2017 consisted of the following:



June 30, 2018	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Money market mutual funds	$	335	$	—	$	—	$	335
Total marketable securities designated as available-for-sale	$	335	$	—	$	—	$	335



December 31, 2017	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Money market mutual funds	$	7,318	$	—	$	—		$	7,318
Certificates of deposit	1,002		—		(1		)	1,001
Total marketable securities designated as available-for-sale	$	8,320	$	—	$	(1	)	$	8,319

The amortized costs and fair value of marketable securities as of June 30, 2018 and December 31, 2017 are shown below by effective maturity. Effective maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties.



June 30, 2018	Amortized Cost		Fair Value
Due in less than one year	$	—	$	—
December 31, 2017	Amortized Cost		Fair Value
Due in less than one year	$	1,002	$	1,001

Interest income from marketable securities was $3 and $30 during the three months ended June 30, 2018 and 2017,

Stock-Based Compensation

6 Months Ended

Jun. 30, 2018

Share-based Compensation [Abstract]

Stock-Based Compensation

Stockholder's Equity

(a) Stock Equity and Incentive Plan

The Company recognizes stock-based compensation in accordance with the provisions of ASC Topic 718, Compensation-Stock Compensation. Stock-based compensation expense, excluding compensation charges related to our employee stock purchase plan, or the ESPP, was $725 and $849 for the three months ended June 30, 2018 and 2017, respectively, and $1,568 and $1,792 for the six months ended June 30, 2018 and 2017, respectively. As of June 30, 2018, there was $2,861 of total unrecognized compensation expense related to stock options, which is expected to be recognized over a weighted-average period of 3.14 years. As of June 30, 2018, there was $4,232 of total unrecognized compensation expense related to restricted stock awards, which is expected to be recognized over a weighted-average period of 2.56 years.

Stock Options

During the three months ended June 30, 2018, 13 stock options were exercised for common stock. Additionally, during the three months ended June 30, 2018, 401 stock options were granted and 76 stock options expired, were canceled or were forfeited.

During the six months ended June 30, 2018, 13 stock options were exercised for common stock, none of which was delivered to the Company as payment for the exercise price or related minimum tax withholding obligations. Additionally, during the six months ended June 30, 2018, 401 stock options were granted with a weighted average grant date fair value of $3.82 per share and 87 stock options expired, were canceled or were forfeited. The Company has estimated the fair value of each option grant on the date of grant using the Black-Scholes option-pricing model. The weighted average assumptions utilized to determine the fair value of options granted during the six months ended June 30, 2018 and 2017 were as follows:




	Six Months Ended June 30,
	2018		2017
Risk-free interest rate	2.81	%	1.96	%
Expected volatility	36.60	%	35.53	%
Expected life (in years)	4.29		4.22
Dividend yield	0	%	0	%

As of June 30, 2018, there were 1,368 options outstanding with a weighted average exercise price of $10.37 per share and 395 options exercisable with a weighted average exercise price of $11.10 per share.

Restricted Stock

During the three months ended June 30, 2018, 134 shares of restricted stock were granted with a weighted average grant date fair value of $11.30 per share and 15 shares of restricted stock were forfeited. Additionally, during the three months ended June 30, 2018, 49 shares of restricted stock vested, of which no shares of common stock were surrendered to the Company as payment by employees in lieu of cash to satisfy minimum tax withholding obligations in connection with the vesting of restricted stock.

During the six months ended June 30, 2018, 154 shares of restricted stock were granted with a weighted average grant date fair value of $11.13 per share and 19 shares of restricted stock were forfeited. Additionally, during the six months ended June 30, 2018, 237 shares of restricted stock vested, of which no shares of common stock were surrendered to the Company as payment by employees in lieu of cash to satisfy minimum tax withholding obligations in connection with the vesting of restricted stock and these shares were immediately retired.

As of June 30, 2018, there were 503 shares of restricted stock outstanding still subject to service-based vesting conditions.

As of June 30, 2018, the Company had no shares of restricted stock that were subject to performance-based or market-based vesting conditions.

(b) Employee Stock Purchase Plan

The Company's Amended and Restated 1996 Employee Stock Purchase Plan (ESPP) affords eligible employees the right to purchase common stock, via payroll deductions, through various offering periods at a purchase price equal to 85% of the fair market value of the common stock on the first or last day of the offering period, whichever is lower. During the three and six months ended June 30, 2018, no shares were issued under the ESPP plan. During the three and six months ended June 30, 2017, 26 and 26 shares were issued under the ESPP plan, respectively. The Company recorded compensation charges related to the ESPP of $14 and $3 for the three months ended June 30, 2018 and 2017, respectively, and $24 and $20 for the six months ended June 30, 2018 and 2017, respectively.

The following table presents stock-based compensation expense, including expense for the ESPP, in the Company's consolidated statements of operations for the three and six months ended June 30, 2018 and 2017:



	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Cost of product sales	$	11	$	72	$	82	$	154
Cost of service sales	—		1		—		1
Research and development	149		170		319		359
Sales, marketing and support	166		221		347		489
General and administrative	413		388		844		809
	$	739	$	852	$	1,592	$	1,812

(d) Accumulated Other Comprehensive Loss

Comprehensive income (loss) includes net income (loss), unrealized gains and losses from foreign currency translation, unrealized gains and losses from available for sale marketable securities and changes in fair value related to interest rate swap derivative instruments, net of tax attributes, which were not material. The components of the Company’s comprehensive income (loss) and the effect on earnings for the periods presented are detailed in the accompanying consolidated statements of comprehensive income (loss).

The balances for the three months ended June 30, 2018 and 2017 are as follows:



	Foreign Currency Translation			Unrealized Gain (Loss) on Available for Sale Marketable Securities		Interest Rate Swaps			Total Accumulated Other Comprehensive Loss
Balance, March 31, 2018	$	(8,803	)	$	—	$	(47	)	$	(8,850	)
Other comprehensive (loss) income before reclassifications	(3,866		)	—		3			(3,863		)
Amounts reclassified from AOCI to Other income, net	—			—		12			12
Net other comprehensive (loss) income, June 30, 2018	(3,866		)	—		15			(3,851		)
Balance, June 30, 2018	$	(12,669	)	$	—	$	(32	)	$	(12,701	)



	Foreign Currency Translation			Unrealized Gain (Loss) on Available for Sale Marketable Securities			Interest Rate Swaps			Total Accumulated Other Comprehensive Loss
Balance, March 31, 2017	$	(16,050	)	$	—		$	(131	)	$	(16,181	)
Other comprehensive income (loss) before reclassifications	2,440			(3		)	(1		)	2,436
Amounts reclassified from AOCI to Other income, net	—			—			19			19
Net other comprehensive income (loss), June 30, 2017	2,440			(3		)	18			2,455
Balance, June 30, 2017	$	(13,610	)	$	(3	)	$	(113	)	$	(13,726	)

The balances for the six months ended June 30, 2018 and 2017 are as follows:



	Foreign Currency Translation			Unrealized Gain (Loss) on Available for Sale Marketable Securities			Interest Rate Swaps			Total Accumulated Other Comprehensive Loss
Balance, December 31, 2017	$	(11,247	)	$	(1	)	$	(69	)	$	(11,317	)
Other comprehensive (loss) income before reclassifications	(1,422		)	1			10			(1,411		)
Amounts reclassified from AOCI to Other income, net	—			—			27			27
Net other comprehensive (loss) income, June 30, 2018	(1,422		)	1			37			(1,384		)
Balance, June 30, 2018	$	(12,669	)	$	—		$	(32	)	$	(12,701	)



	Foreign Currency Translation			Unrealized Gain (Loss) on Available for Sale Marketable Securities			Interest Rate Swaps			Total Accumulated Other Comprehensive Loss
Balance, December 31, 2016	$	(16,651	)	$	—		$	(158	)	$	(16,809	)
Other comprehensive income (loss) before reclassifications	3,041			(3		)	4			3,042
Amounts reclassified from AOCI to Other income, net	—			—			41			41
Net other comprehensive income (loss), June 30, 2017	3,041			(3		)	45			3,083
Balance, June 30, 2017	$	(13,610	)	$	(3	)	$	(113	)	$	(13,726	)

For additional information, see Note 4, "Marketable Securities," and Note 17, "Derivative Instruments and Hedging Activities."

Net Income (Loss) per Common Share

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Net Income per Common Share

Net Loss per Common Share

Basic net loss per share is calculated based on the weighted average number of common shares outstanding during the period. Diluted net loss per share incorporates the dilutive effect of common stock equivalent options, warrants and other convertible securities, if any, as determined with the treasury stock accounting method. For the three and six months ended June 30, 2018, since there was a net loss, the Company excluded all 634 and 805, respectively, in outstanding stock options and non-vested restricted shares from its diluted loss per share calculation, as inclusion of these securities would have reduced the net loss per share. For the three and six months ended June 30, 2017, since there was a net loss, the Company excluded all 1,207 and 960, respectively, in outstanding stock options and non-vested restricted shares from its diluted loss per share calculation, as inclusion of these securities would have reduced the net loss per share.

A reconciliation of the basic and diluted weighted average common shares outstanding is as follows:



	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2018	2017	2018	2017
Weighted average common shares outstanding—basic	17,140	16,446	16,942	16,354
Dilutive common shares issuable in connection with stock plans	—	—	—	—
Weighted average common shares outstanding—diluted	17,140	16,446	16,942	16,354

Inventories

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Inventories

Inventories are stated at the lower of cost and net realizable value using the first-in first-out costing method. Inventories as of June 30, 2018 and December 31, 2017 include the costs of material, labor, and factory overhead. Components of inventories consist of the following:



	June 30, 2018		December 31, 2017
Raw materials	$	13,387	$	13,347
Work in process	2,812		2,137
Finished goods	6,713		7,248
	$	22,912	$	22,732

Product Warranty

6 Months Ended

Jun. 30, 2018

Product Warranties Disclosures [Abstract]

Product Warranty

The Company’s products carry standard limited warranties that range from one to two years and vary by product. The warranty period begins on the date of retail purchase or lease by the original purchaser. The Company accrues estimated product warranty costs at the time of sale and any additional amounts are recorded when such costs are probable and can be reasonably estimated. Factors that affect the Company’s warranty liability include the number of units sold or leased, historical and anticipated rates of warranty repairs and the cost per repair. Warranty and related costs are reflected within sales, marketing and support in the accompanying consolidated statements of operations. As of June 30, 2018 and December 31, 2017, the Company had accrued product warranty costs of $2,039 and $2,074, respectively.

The following table summarizes product warranty activity during 2018 and 2017:



	Six Months Ended
	June 30,
	2018			2017
Beginning balance	$	2,074		$	2,280
Charges to expense	1,156			500
Costs incurred	(1,191		)	(373		)
Ending balance	$	2,039		$	2,407

Debt

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Debt Disclosure [Text Block]

Debt

Long-term debt consisted of the following:



	June 30, 2018		December 31, 2017
Term note	$	40,875	$	44,275
Mortgage loan	2,690		2,779
Total	43,565		47,054
Less amounts classified as current	4,990		2,482
Long-term debt, excluding current portion	$	38,575	$	44,572

Term Note and Line of Credit

On July 1, 2014, the Company entered into (i) a five-year senior credit facility agreement (the Credit Agreement) with Bank of America, N.A., as Administrative Agent, and the lenders named from time to time as parties thereto (the Lenders), for an aggregate amount of up to $80,000, including a revolving credit facility (the Revolver) of up to $15,000 and a term loan (Term Loan) of $65,000 to be used for general corporate purposes, including both (A) the refinancing of the Company’s $30,000 then-outstanding indebtedness under its previous credit facility and (B) permitted acquisitions, (ii) revolving credit notes (together, the Revolving Credit Note) to evidence the Revolver, (iii) term notes (together, the Term Note, and together with the Revolving Credit Note, the Notes) to evidence the Term Loan, (iv) a Security Agreement (the Security Agreement) required by the Lenders with respect to the grant by the Company of a security interest in substantially all of the assets of the Company in order to secure the obligations of the Company under the Credit Agreement and the Notes, and (v) Pledge Agreements (the Pledge Agreements) required by the Lenders with respect to the grant by the Company of a security interest in 65% of the capital stock of each of KVH Industries A/S and KVH Industries U.K. Limited held by the Company in order to secure the obligations of the Company under the Credit Agreement and the Notes.

The Credit Agreement was most recently amended in March 2017 to modify the Maximum Consolidated Leverage Ratio, the Applicable Rate, the Consolidated Fixed Charge Coverage Ratio and the amortization schedule of the Term Loan, as well as to make certain other changes. The amendment was accounted for as a debt modification as it did not result in a significant modification to the Credit Agreement.

In connection with the March 2017 amendment, the Company made an additional principal repayment of $6,000 on the Term Note and amended the repayment terms. Under the amended terms, the Company must make principal repayments of $575 every three months starting on April 1, 2017 until the Term Note maturity on July 1, 2019. On the maturity date, the entire remaining principal balance of the loan, including any future loans under the Revolver, is due and payable, together with all accrued and unpaid interest, penalties, and any other amounts due and payable under the Credit Agreement. The Credit Agreement contains provisions requiring the mandatory prepayment of amounts outstanding under the Term Loan and the Revolver under specified circumstances, including (i) 100% of the net cash proceeds from certain dispositions to the extent not reinvested in the Company’s business within a stated period, (ii) 50% of the net cash proceeds from stated equity issuances and (iii) 100% of the net cash proceeds from certain receipts of more than $250 outside the ordinary course of business. The prepayments are first applied to the Term Loan, in inverse order of maturity, and then to the Revolver. In the discretion of the Administrative Agent, certain mandatory prepayments made on the Revolver can permanently reduce the amount of credit available under the Revolver.

As required by the Credit Agreement, the Company used 50% of the net cash proceeds of its $4,500 private placement of treasury stock to SKY Perfect JSAT Corporation on February 28, 2018 to prepay $2,250 of indebtedness under the Term Loan.

Loans under the Credit Agreement bear interest at varying rates determined in accordance with the Credit Agreement. Each LIBOR Rate Loan, as defined in the Credit Agreement, bears interest on the outstanding principal amount thereof for each interest period from the applicable borrowing date at a rate per annum equal to the LIBOR Daily Floating Rate or LIBOR Monthly Floating Rate, each as defined in the Credit Agreement, as applicable, plus the Applicable Rate, as defined in the Credit Agreement, and each Base Rate Loan, as defined in the Credit Agreement, bears interest on the outstanding principal amount thereof from the applicable borrowing date at a rate per annum equal to the Base Rate, as defined in the Credit Agreement, plus the Applicable Rate. The Applicable Rate ranges from 1.75% to 2.25%, depending on the Company’s Consolidated Leverage Ratio, as defined in the Credit Agreement. The highest Applicable Rate applies when the Consolidated Leverage Ratio exceeds 1.50:1.00. Upon certain defaults, including failure to make payments when due, interest becomes payable at a higher default rate.

Borrowings under the Revolver are subject to the satisfaction of numerous conditions precedent at the time of each borrowing, including the continued accuracy of the Company’s representations and warranties and the absence of any default under the Credit Agreement. As of June 30, 2018, there were no borrowings outstanding under the Revolver and the full balance of $15,000 was available for borrowing.

The Credit Agreement contains two financial covenants, a Maximum Consolidated Leverage Ratio and a Minimum Consolidated Fixed Charge Coverage Ratio, each as defined in the Credit Agreement. The Maximum Consolidated Leverage Ratio may not be greater than 1.50:1.00. The Minimum Consolidated Fixed Charge Coverage Ratio may not be less than 1.25:1.00. In the March 2017 amendment, the definition of the Consolidated Fixed Charge Coverage Ratio was amended to include only maintenance capital expenditures as defined. The Company was in compliance with these financial ratio debt covenants as of June 30, 2018.

The Credit Agreement imposes certain other affirmative and negative covenants, including without limitation covenants with respect to the payment of taxes and other obligations, compliance with laws, entry into material contracts, creation of liens, incurrence of indebtedness, investments, dispositions, fundamental changes, restricted payments, changes in the nature of the Company’s business, transactions with affiliates, corporate and accounting changes, and sale and leaseback arrangements.

The Company’s obligation to repay loans under the Credit Agreement could be accelerated upon a default or event of default under the terms of the Credit Agreement, including certain failures to pay principal or interest when due, certain breaches of representations and warranties, the failure to comply with the Company’s affirmative and negative covenants under the Credit Agreement, a change of control of the Company, certain defaults in payment relating to other indebtedness, the acceleration of payment of certain other indebtedness, certain events relating to the liquidation, dissolution, bankruptcy, insolvency or receivership of the Company, the entry of certain judgments against the Company, certain events relating to the impairment of collateral or the Lenders' security interest therein, and any other material adverse change with respect to the Company.

Mortgage Loan

The Company has a mortgage loan (as amended, the Mortgage Loan) in the amount of $4,000 related to its headquarters facility in Middletown, Rhode Island. The loan term is ten years, with a principal amortization of 20 years. The interest rate is based on the BBA LIBOR Rate plus 2.00 percentage points. The Mortgage Loan is secured by the underlying property and improvements. The monthly mortgage payment is approximately $15, plus interest. Due to the difference in the term of the loan and amortization of the principal, a balloon payment of $2,551 is due on April 6, 2019. The loan contains one financial covenant, a Fixed Charge Coverage Ratio, which applies in the event that the Company's consolidated cash, cash equivalents and marketable securities balance falls below $25,000 at any time. As the Company's consolidated cash, cash equivalents, and marketable securities balance was above the minimum threshold throughout the six months ended June 30, 2018, the Fixed Charge Coverage Ratio did not apply.

Under the Mortgage Loan, the Company may prepay its outstanding loan balance subject to certain early termination charges. If the Company were to default on the Mortgage Loan, the underlying property and improvements would be used as collateral. As discussed in Note 17 to the consolidated financial statements, the Company entered into two interest rate swap agreements that are intended to hedge its mortgage interest obligations over the term of the Mortgage Loan by fixing the interest rates specified in the Mortgage Loan to 5.91% for half of the principal amount outstanding as of April 1, 2010 and 6.07% for the remaining half.

Segment Reporting

6 Months Ended

Jun. 30, 2018

Segment Reporting [Abstract]

Segment Reporting

The financial results of each segment are based on revenues from external customers, cost of revenue and operating expenses that are directly attributable to the segment and an allocation of costs from shared functions. These shared functions include, but are not limited to, facilities, human resources, information technology, and engineering. Allocations are made based on management’s judgment of the most relevant factors, such as head count, number of customer sites, or other operational data that contribute to the shared costs. Certain corporate-level costs have not been allocated as they are not directly attributable to either segment. These costs primarily consist of broad corporate functions, including executive, legal, finance, and costs associated with corporate actions. Segment-level asset information has not been provided as such information is not reviewed by the chief operating decision-maker for purposes of assessing segment performance and allocating resources. There are no inter-segment sales or transactions.

The Company's performance is impacted by the levels of activity in the marine and land mobile markets and defense sectors, among others. Performance in any particular period could be impacted by the timing of sales to certain large customers.

The mobile connectivity segment primarily manufactures and distributes a comprehensive family of mobile satellite antenna products and services that provide access to television, the Internet and voice services while on the move. Product sales within the mobile connectivity segment accounted for 19% and 22% of the Company's consolidated net sales for the three months ended June 30, 2018 and 2017, respectively, and 19% and 23% of the Company's consolidated net sales for the six months ended June 30, 2018 and 2017, respectively. Sales of mini-VSAT Broadband airtime service accounted for 40% and 41% of the Company's consolidated net sales for the three months ended June 30, 2018 and 2017, respectively, and 40% and 40% of the Company's consolidated net sales for the six months ended June 30, 2018 and 2017, respectively. Sales of content and training services within the mobile connectivity segment accounted for 18% and 20% of the Company's consolidated net sales for the three months ended June 30, 2018 and 2017, respectively, and 18% and 20% of the Company's consolidated net sales for the six months ended June 30, 2018 and 2017, respectively.

The inertial navigation segment manufactures and distributes a portfolio of digital compass and fiber optic gyro (FOG)-based systems that address the rigorous requirements of military and commercial customers and provide reliable, easy-to-use and continuously available navigation and pointing data. The principal product categories in this segment include the FOG-based inertial measurement units (IMUs) for precision guidance, FOGs for tactical navigation as well as pointing and stabilization systems, and digital compasses that provide accurate heading information for demanding applications, security, automation and access control equipment and systems. Sales of FOG-based guidance and navigation systems within the inertial navigation segment accounted for 15% and 12% of the Company's consolidated net sales for the three months ended June 30, 2018 and 2017, respectively, and 14% and 11% of the Company's consolidated net sales for the six months ended June 30, 2018 and 2017, respectively.

No other single product class accounts for 10% or more of the Company's consolidated net sales.

The Company operates in a number of major geographic areas across the globe. The Company generates international net sales, based upon customer location, primarily from customers located in Canada, Europe, Africa, Asia/Pacific, the Middle East, and India. International revenues represented 60% and 62% of the Company's consolidated net sales for the three months ended June 30, 2018 and 2017, respectively, and 59% and 61% of the Company's consolidated net sales for the six months ended June 30, 2018 and 2017, respectively. No individual foreign country represented 10% or more of the Company's consolidated net sales for the three months ended June 30, 2018 and 2017. No individual foreign country represented 10% or more of the Company's consolidated net sales for the six months ended June 30, 2018 or 2017.

As of June 30, 2018 and December 31, 2017, the long-lived tangible assets related to the Company’s international subsidiaries were less than 10% of the Company’s long-lived tangible assets and were deemed not material.

Net sales and operating income (loss) for the Company's reporting segments and the Company's loss before income tax expense for the three and six months ended June 30, 2018 and 2017 were as follows:



	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2018			2017			2018			2017
Net sales:
Mobile connectivity	$	33,764		$	34,034		$	66,513		$	68,321
Inertial navigation	9,628			6,415			16,980			12,339
Consolidated net sales	$	43,392		$	40,449		$	83,493		$	80,660

Operating income (loss):
Mobile connectivity	$	1,149		$	2,638		$	2,221		$	3,260
Inertial navigation	1,564			362			1,898			318
Subtotal	2,713			3,000			4,119			3,578
Unallocated, net	(3,900		)	(4,368		)	(8,486		)	(9,416		)
Loss from operations	(1,187		)	(1,368		)	(4,367		)	(5,838		)
Net interest and other income (expense)	173			(302		)	(362		)	(557		)
Loss before income tax expense	$	(1,014	)	$	(1,670	)	(4,729		)	$	(6,395	)

Depreciation expense and amortization expense for the Company's segments are presented in the following table for the periods presented:



	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
Depreciation expense:
Mobile connectivity	$	1,810	$	1,394	$	3,370	$	2,872
Inertial navigation	254		199		506		395
Unallocated	128		21		269		40
Total consolidated depreciation expense	$	2,192	$	1,614	$	4,145	$	3,307

Amortization expense:
Mobile connectivity	$	1,046	$	1,102	$	2,143	$	2,170
Inertial navigation	—		—		—		—
Unallocated	—		—		—		—
Total consolidated amortization expense	$	1,046	$	1,102	$	2,143	$	2,170

Legal Matters	6 Months Ended
Legal Matters	Jun. 30, 2018
Legal Matters [Abstract]
Legal Matters	Legal Matters From time to time, the Company is involved in litigation incidental to the conduct of its business. In the ordinary course of business, the Company is a party to inquiries, legal proceedings and claims including, from time to time, disagreements with vendors and customers. The Company is not a party to any lawsuit or proceeding that, in management's opinion, is likely to materially harm the Company's business, results of operations, financial condition, or cash flows.

Share Buyback Program	6 Months Ended
Share Buyback Program	Jun. 30, 2018
Disclosure of Repurchase Agreements [Abstract]
Share Buyback Program	Share Buyback Program On November 26, 2008, the Company’s Board of Directors authorized a program to repurchase up to 1,000 shares of the Company’s common stock. As of June 30, 2018, 341 shares of the Company’s common stock remain available for repurchase under the authorized program. The repurchase program is funded using the Company’s existing cash, cash equivalents, marketable securities and future cash flows. Under the repurchase program, the Company, at management’s discretion, may repurchase shares on the open market from time to time, in privately negotiated transactions or block transactions, or through an accelerated repurchase agreement. The timing of such repurchases depends on availability of shares, price, market conditions, alternative uses of capital, and applicable regulatory requirements. The program may be modified, suspended or terminated at any time without prior notice. The repurchase program has no expiration date. There were no other repurchase programs outstanding during the six months ended June 30, 2018 and no repurchase programs expired during the period. During the six months ended June 30, 2018 and 2017, the Company did not repurchase any shares of its common stock.

Fair Value Measurements

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements

ASC Topic 820, Fair Value Measurements and Disclosures (ASC 820), provides a framework for measuring fair value and requires expanded disclosures regarding fair value measurements. ASC 820 defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. ASC 820 also establishes a fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. ASC 820 describes three levels of inputs that may be used to measure fair value:


Level 1:	Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities. The Company’s Level 1 assets are investments in money market mutual funds and certificates of deposit.


Level 2:	Quoted prices for similar assets or liabilities in active markets; or observable prices that are based on observable market data, based on directly or indirectly market-corroborated inputs. The Company’s Level 2 liabilities are interest rate swaps.


Level 3:	Unobservable inputs that are supported by little or no market activity, and are developed based on the best information available given the circumstances. The Company has no Level 3 assets.

Assets and liabilities measured at fair value are based on the valuation techniques identified in the table below. The valuation techniques are:


(a)	Market approach—prices and other relevant information generated by market transactions involving identical or comparable assets.

(b)

The valuations of the interest rate swaps intended to mitigate the Company’s interest rate risk are determined with the assistance of a third-party financial institution using widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each instrument. This analysis utilizes observable market-based inputs, including interest rate curves and interest rate volatility, and reflects the contractual terms of these instruments, including the period to maturity.

The following tables present financial assets and liabilities at June 30, 2018 and December 31, 2017 for which the Company measures fair value on a recurring basis, by level, within the fair value hierarchy:



June 30, 2018	Total		Level 1		Level 2		Level 3		Valuation Technique
Assets
Money market mutual funds	$	335	$	335	$	—	$	—	(a)
Liabilities
Interest rate swaps	32		—		32		—		(b)



December 31, 2017	Total		Level 1		Level 2		Level 3		Valuation Technique
Assets
Money market mutual funds	$	7,318	$	7,318	$	—	$	—	(a)
Certificates of deposit	1,001		1,001		—		—		(a)
Liabilities
Interest rate swaps	69		—		69		—		(b)

Certain financial instruments are carried at cost on the consolidated balance sheets, which approximates fair value due to their short-term, highly liquid nature. These instruments include cash and cash equivalents, accounts receivable, accounts payable, and accrued expenses. The carrying amount of the Company's debt approximates fair value based on currently available quoted rates of similarly structured debt.

Assets Measured and Recorded at Fair Value on a Nonrecurring Basis

The Company's non-financial assets, such as goodwill, intangible assets, and other long-lived assets resulting from business combinations, are measured at fair value using income approach valuation methodologies at the date of acquisition and subsequently re-measured if an impairment exists. There were no impairments of the Company’s non-financial assets noted as of June 30, 2018. The Company does not have any liabilities that are recorded at fair value on a non-recurring basis.

Goodwill and Intagible Assets

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

Goodwill

The following table sets forth the changes in the carrying amount of goodwill for the six months ended June 30, 2018:



	Amounts
Balance at December 31, 2017	$	33,872
Foreign currency translation adjustment	(635		)
Balance at June 30, 2018	$	33,237

In January 2017, the Company early adopted ASC Update No. 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test of Goodwill Impairment. ASC 350 requires the completion of a goodwill impairment test at least annually based on either an optional qualitative assessment or the first step of comparing the carrying value of a reporting unit to its estimated fair value as of the test date. Any impairment charges would be based on the first step. The Company now performs its annual goodwill impairment test as of October 1st. During the three months ended December 31, 2017, the Company changed its annual impairment assessment date from August 31st to October 1st to better align the timing of the test date with its annual budgeting cycle. In connection with the change in the date of its annual goodwill impairment test, the Company performed a goodwill impairment test as of both August 31, 2017 and October 1, 2017, and concluded that the fair values of its reporting units exceeded their respective carrying values. The Company notes that, as of August 31, 2017, the fair value of all of the Company’s reporting units exceeded their carrying values by more than 10%. For the October 1, 2017 test, the Company performed a qualitative assessment over goodwill impairment concluding it was more-likely-than-not that its reporting units fair value exceeded their carrying value. Accordingly, it was not necessary for the Company to perform the full Step 1 quantitative analysis. To date, the Company has not had accumulated goodwill impairment losses. A negative trend of operating results or material changes to forecasted operating results could result in the requirement for additional interim goodwill impairment tests and the potential of a future goodwill impairment charge, which could be material.

Intangible Assets

The changes in the carrying amount of intangible assets during the six months ended June 30, 2018 are as follows:



	Amounts
Balance at December 31, 2017	$	15,120
Amortization expense	(2,143		)
Foreign currency translation adjustment	(234		)
Balance at June 30, 2018	$	12,743

Intangible assets arose from an acquisition made prior to 2013, the acquisition of KVH Media Group (acquired as Headland Media Limited) in May 2013 and the acquisition of Videotel in July 2014. Intangibles arising from the acquisition made prior to 2013 are being amortized on a straight-line basis over an estimated useful life of 7 years. Intangibles arising from the acquisition of KVH Media Group are being amortized on a straight-line basis over the estimated useful life of: (i) 10 years for acquired subscriber relationships, (ii) 15 years for distribution rights, (iii) 3 years for internally developed software and (iv) 2 years for proprietary content. Intangibles arising from the acquisition of Videotel are being amortized on a straight-line basis over the estimated useful life of: (i) 8 years for acquired subscriber relationships, (ii) 5 years for favorable leases, (iii) 4 years for internally developed software and (iv) 5 years for proprietary content. The intangibles arising from the KVH Media Group and Videotel acquisitions were recorded in pounds sterling and fluctuations in exchange rates could cause these amounts to increase or decrease from time to time.

In January 2017, the Company completed the acquisition of certain subscriber relationships from a third party. This acquisition did not meet the definition of a business under ASC 2017-01, Business Combinations (Topic 805)-Clarifying the Definition of a Business, which the Company adopted on October 1, 2016. The Company ascribed $100 of the initial purchase price to the acquired subscriber relationships definite-lived intangible assets with an initial estimated useful life of 10 years. Under the asset purchase agreement, the purchase price includes a component of contingent consideration under which the Company is required to pay a percentage of recurring revenues received from the acquired subscriber relationships through 2026 up to a maximum annual payment of $114. As of June 30, 2018, the carrying value of the intangible assets acquired in the asset acquisition was $133. As the acquisition did not represent a business combination, the contingent consideration arrangement is recognized only when the contingency is resolved and the consideration is paid or becomes payable. The amounts payable under the contingent consideration arrangement, if any, will be included in the measurement of the cost of the acquired subscriber relationships. During the six months ended June 30, 2018, no additional consideration was earned under the contingent consideration arrangement.

Acquired intangible assets are subject to amortization. The following table summarizes acquired intangible assets at June 30, 2018 and December 31, 2017, respectively:



	Gross Carrying Amount		Accumulated Amortization		Net Carrying Value
June 30, 2018
Subscriber relationships	$	17,750	$	9,371	$	8,379
Distribution rights	4,328		1,595		2,733
Internally developed software	2,327		2,327		—
Proprietary content	8,206		6,697		1,509
Intellectual property	2,284		2,284		—
Favorable lease	647		525		122
	$	35,542	$	22,799	$	12,743
December 31, 2017
Subscriber relationships	$	17,912	$	8,347	$	9,565
Distribution rights	4,385		1,450		2,935
Internally developed software	2,324		2,206		118
Proprietary content	8,223		5,908		2,315
Intellectual property	2,284		2,284		—
Favorable lease	648		461		187
	$	35,776	$	20,656	$	15,120

Amortization expense related to intangible assets for the three and six months ended June 30, 2018 and 2017 was as follows:



	Three Months Ended				Six Months Ended
	June 30,				June 30,
Expense Category	2018		2017		2018		2017
Cost of service sales	$	390	$	367	$	789	$	722
General and administrative expense	656		735		1,354		1,448
Total amortization expense	$	1,046	$	1,102	$	2,143	$	2,170

As of June 30, 2018, the total weighted average remaining useful lives of the definite-lived intangible assets was 3.8 years and the weighted average remaining useful lives by the definite-lived intangible asset category are as follows:



Intangible Asset	Weighted Average Remaining Useful Life in Years
Subscriber relationships	4.4
Distribution rights	9.8
Proprietary content	1.0
Favorable lease	1.0

Estimated future amortization expense remaining at June 30, 2018 for intangible assets acquired is as follows:



Remainder of 2018	$	1,940
2019	3,057
2020	2,244
2021	2,244
2022	1,472
Thereafter	1,786
Total future amortization expense	$	12,743

For intangible assets, the Company assesses the carrying value of these assets whenever events or circumstances indicate that the carrying value may not be recoverable. Recoverability of assets to be held and used is measured by comparing the carrying amount of an asset, or asset group, to the future undiscounted cash flows expected to be generated by the asset, or asset group. There were no events or changes in circumstances during the second quarter of 2018 which indicated that an assessment of the impairment of goodwill and intangible assets was required.

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Business and Credit Concentrations	6 Months Ended
Business and Credit Concentrations	Jun. 30, 2018
Risks and Uncertainties [Abstract]
Business and Credit Concentrations	Business and Credit Concentrations Concentrations of risk with respect to trade accounts receivable are generally limited due to the large number of customers and their dispersion across several geographic areas. Although the Company does not foresee that credit risk associated with these receivables will deviate from historical experience, repayment is dependent upon the financial stability of those individual customers. The Company establishes allowances for potential bad debts and evaluates, on a monthly basis, the adequacy of those reserves based upon historical experience and its expectations for future collectability concerns. The Company performs ongoing credit evaluations of the financial condition of its customers and generally does not require collateral. No single customer accounted for 10% or more of the Company's consolidated net sales for three and six months ended June 30, 2018 or 2017 or accounts receivable at June 30, 2018 or December 31, 2017. Certain components from third parties used in the Company’s products are procured from single sources of supply. The failure of a supplier, including a subcontractor, to deliver on schedule could delay or interrupt the Company’s delivery of products and thereby materially adversely affect the Company’s revenues and operating results.

Revenue from Contracts with Customers (ASC 606)

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

Concentration Risk Disclosure [Text Block]

Business and Credit Concentrations

Concentrations of risk with respect to trade accounts receivable are generally limited due to the large number of customers and their dispersion across several geographic areas. Although the Company does not foresee that credit risk associated with these receivables will deviate from historical experience, repayment is dependent upon the financial stability of those individual customers. The Company establishes allowances for potential bad debts and evaluates, on a monthly basis, the adequacy of those reserves based upon historical experience and its expectations for future collectability concerns. The Company performs ongoing credit evaluations of the financial condition of its customers and generally does not require collateral.

No single customer accounted for 10% or more of the Company's consolidated net sales for three and six months ended June 30, 2018 or 2017 or accounts receivable at June 30, 2018 or December 31, 2017.

Certain components from third parties used in the Company’s products are procured from single sources of supply. The failure of a supplier, including a subcontractor, to deliver on schedule could delay or interrupt the Company’s delivery of products and thereby materially adversely affect the Company’s revenues and operating results.

Revenue from Contract with Customer [Text Block]

(16) Revenue from Contracts with Customers (ASC 606)

The Company adopted ASC 606 on January 1, 2018 using the modified retrospective method for all contracts not completed as of the date of adoption. The reported results for the three and six months ended June 30, 2018 reflect the application of ASC 606 guidance while the reported results for the three and six months ended June 30, 2017 were prepared under the guidance of ASC 605, Revenue Recognition (ASC 605), which is also referred to herein as "legacy GAAP" or the "previous guidance". The adoption of ASC 606 represents a change in accounting principle that is expected to more closely align revenue recognition with the delivery of the Company's products and services and is expected to provide financial statement readers with enhanced disclosures. In accordance with ASC 606, revenue is recognized when a customer obtains control of promised products and services. The amount of revenue recognized reflects the consideration to which the Company expects to be entitled to receive in exchange for these products and services. To achieve this core principle, the Company applies the following five steps:

1) Identify the contract with a customer

A contract with a customer exists when (i) the Company enters into an enforceable contract with a customer that defines each party’s rights regarding the products and services to be transferred and identifies the payment terms related to these products and services, (ii) the contract has commercial substance and, (iii) the Company determines that collection of substantially all consideration for products and services that are transferred is probable based on the customer’s intent and ability to pay the promised consideration. The Company applies judgment in determining the customer’s ability and intention to pay, which is based on a variety of factors, including the customer’s historical payment pattern or, in the case of a new customer, published credit and financial information pertaining to the customer.

2) Identify the performance obligations in the contract

Performance obligations promised in a contract are identified based on the products and services that will be transferred to the customer that are both capable of being distinct, whereby the customer can benefit from the product and service either on its own or together with other resources that are readily available from third parties or from the Company, and are distinct in the context of the contract, whereby the transfer of the product and service is separately identifiable from other promises in the contract. To the extent a contract includes multiple promised products and services, the Company must apply judgment to determine whether promised products and services are capable of being distinct and distinct in the context of the contract. If these criteria are not met the promised products and services are accounted for as a combined performance obligation.

3) Determine the transaction price

The transaction price is determined based on the consideration to which the Company will be entitled in exchange for transferring products and services to the customer. To the extent the transaction price includes variable consideration, the Company estimates the amount of variable consideration that should be included in the transaction price utilizing either the expected value method or the most likely amount method depending on the nature of the variable consideration. Variable consideration is included in the transaction price if, in the Company’s judgment, it is probable that a significant future reversal of cumulative revenue under the contract will not occur. None of the Company's contracts as of June 30, 2018 contained a significant financing component. Determining the transaction price requires significant judgment, which is discussed by revenue category in further detail below.

4) Allocate the transaction price to performance obligations in the contract

If the contract contains a single performance obligation, the entire transaction price is allocated to the single performance obligation. However, if a series of distinct products or services that are substantially the same qualifies as a single performance obligation in a contract with variable consideration, the Company must determine if the variable consideration is attributable to the entire contract or to a specific part of the contract. Contracts that contain multiple performance obligations require an allocation of the transaction price to each performance obligation based on a relative standalone selling price basis unless the transaction price is variable and meets the criteria to be allocated entirely to a performance obligation or to a distinct product or service that forms part of a single performance obligation. The Company determines standalone selling price based on the price at which the performance obligation is sold separately. If the standalone selling price is not observable through past transactions, the Company estimates the standalone selling price taking into account available information such as market conditions and internally approved pricing guidelines related to the performance obligations.

5) Recognize revenue when or as the Company satisfies a performance obligation

The Company satisfies performance obligations either over time or at a point in time as discussed in further detail below. Revenue is recognized at the time the related performance obligation is satisfied by transferring a promised product or service to a customer.

Disaggregation of Revenue

The following table summarizes net sales from contracts with customers for the three and six months ended June 30, 2018:



	Three Months Ended		Six Months Ended
	June 30, 2018
Mobile connectivity product, transferred at point in time	$	6,731	$	13,401
Mobile connectivity product, transferred over time	1,372		2,622
Mobile connectivity service	25,661		50,490
Inertial navigation product	8,059		14,131
Inertial navigation service	1,569		2,849
Total net sales	$	43,392	$	83,493

For mobile connectivity product sales, the delivery of the Company’s performance obligations, and associated revenue, are generally transferred to the customer at a point in time, with the exception of certain mini-VSAT contracts which are transferred to customers over time. For mobile connectivity service sales, the delivery of the Company’s performance obligations and associated revenue are transferred to the customer over time. For inertial navigation product sales, the delivery of the Company’s performance obligations, and associated revenue, are generally transferred to the customer at a point in time. For inertial navigation service sales, the Company's performance obligations, and associated revenue, are generally transferred to customers over time.

Product sales

Revenue from product sales is recognized when control of the goods is transferred to the customer, which generally occurs at the Company’s plant or warehouse upon delivery to the carrier for shipment. Revenue related to shipping and handling is recognized when the products are shipped and the associated costs are accrued for based on the Company’s election to account for shipping and handling activities as a fulfillment of the promise to transfer the products and not as a combined promise. For certain inertial navigation product sales, customer acceptance or inspection may be required before control of the goods is transferred to the customer. For those sales, revenue is recognized after notification of customer acceptance and the goods have been delivered to the carrier for shipment. In certain circumstances customers may request a bill-and-hold arrangement. Under these bill-and-hold arrangements, revenue is recognized when the Company has fulfilled all of its performance obligations, the Company has received notification of customer acceptance of the goods, the units are segregated for the specific customer only, and the goods are ready for physical transfer to the customer in accordance with their defined contract delivery schedule.

The Company’s standard payment terms are generally Net 30. Under certain limited conditions, the Company, at its sole discretion, provides for the return of goods. No product is accepted for return and no credit is allowed on any returned product unless the Company has granted and confirmed prior written permission by means of appropriate authorization. The Company establishes reserves for potential sales returns, credits, and allowances, and evaluates, on a monthly basis, the adequacy of those reserves based upon historical experience and expectations for the future.

Contracts with multiple performance obligations

The Company sells products and services through arrangements that in certain instances bundle VSAT equipment, satellite connectivity and other services. For these arrangements, the Company has determined that the performance obligations are not distinct in the context of the contracts with certain customers, including sales-type leases on the VSAT equipment. The Company will recognize product revenue under these arrangements over the estimated satellite connectivity customer life, which is estimated to be five years based on historical evidence. For sales-type leases, interest is charged at market rates and is recognized in other income throughout the lease term, which is typically three to five years.

Satellite connectivity and media content service sales

Directly sold and re-sold satellite connectivity service for voice, data and Internet is recognized monthly based upon minutes or megabytes of traffic processed or contracted fixed fee schedules. Typically, subscribers enter into a one-year minimum service agreement. The Company has evaluated whether it obtains control of the services that are being transferred to the customer in assessing gross revenue reporting as principal verse net revenue reporting as agent for its satellite connectivity service sales and its payments to the applicable service providers. Based on the Company's assessment of the indicators, the Company has determined that gross revenue reporting as a principal is appropriate. The applicable indicators of gross revenue reporting included, but were not limited to, the following:

•

The Company is the primary obligor in its arrangements with its subscribers. The Company manages all interactions with the subscribers, while satellite connectivity service providers do not interact with the subscribers. In addition, the Company assumes the entire performance risk under its arrangements with the subscribers and in the event of a performance issue, the Company may incur reductions in fees without regard for any recourse that the Company may have with the applicable satellite connective service providers.


•	The Company has latitude in establishing pricing, as the pricing under its arrangements with the subscribers is negotiated through a contracting process, and has discretion on establishing pricing. The Company then separately negotiates the fees with the applicable satellite service providers.


•	The Company has complete discretion in determining which satellite service providers it will contract with.

As a result, the Company has determined that it earns revenue (as a principal) from the delivery of satellite connectivity services to its subscribers and records all satellite connectivity service sales to subscribers as gross sales. All associated regulatory service fees and costs are recorded net in the consolidated financial statements.

The Company sells prepaid airtime services in the form of prepaid cards. A liability is established upon purchase equal to the cash paid for the prepaid card. The Company recognizes revenue from the prepaid services upon the use of the prepaid card by the customer. The Company does not offer refunds for unused prepaid services. Prepaid airtime services have not been a significant portion of the Company’s total sales.

Media content sales include the Company's distribution of commercially licensed news, sports, movies and music content for commercial and leisure customers in the maritime, hotel, and retail markets as well as training videos to the merchant marine market that are typically based on a contracted fixed fee schedule. The Company typically recognizes revenue from media content sales ratably over the period of the service contract.

The accounting estimates related to the recognition of satellite connectivity and media content service sales require the Company to make assumptions about future billing adjustments for disputes with subscribers as well as unauthorized usage. The Company recognizes the monthly subscription fee as service revenue over the service delivery period. Under AgilePlans, the Company retains ownership of the hardware that it provides to these customers, who must return the hardware to KVH if they decide to terminate the service. Because KVH does not sell the hardware under AgilePlans, the Company does not recognize any product revenue when the hardware is deployed to an AgilePlans customer.

Inertial navigation service sales

The Company engages in contracts for development, production, and services activities related to standard product modification or enhancement. The Company considers the nature of these contracts and the types of products and services provided when determining the proper accounting for a particular contract. Customer and government-agency contracted engineering service and sales under development contracts are recognized primarily during the periods in which the Company performs the service or development efforts in accordance with the agreement. Services performed under these types of contracts include engineering studies, surveys, building construction, prototype development, and program management. Performance is determined principally by comparing the accumulated labor hours incurred to date with management’s estimate of the total labor hours to complete the contracted work. Incurred labor hours represent work performed, which corresponds with and best depicts the transfer of control to the customer. This continuous transfer of control to the customer is supported by clauses in the contract that allow the customer to unilaterally terminate the contract for convenience, pay the Company for costs incurred plus a reasonable profit and take control of any work in process. The Company establishes billing terms at the time project deliverables and milestones are agreed. Unbilled revenue recognized in excess of the amounts invoiced to clients are classified within the accompanying consolidated balance sheets as “accounts receivable” as the Company's right to consideration is unconditional.

Product service sales

Product service sales other than under development contracts are recognized when completed services are delivered to the customer. The Company also sells extended warranty contracts on mobile connectivity and inertial navigation products. Sales under these contracts are recognized ratably over the contract term. Product service sales including extended warranties are not a significant portion of the Company’s total sales.

Financial Statement Impact of Adopting ASC 606

The Company adopted ASC 606 using the modified retrospective method. The cumulative effect of applying the new guidance to all contracts with customers that were not completed as of January 1, 2018 was recorded as an adjustment to accumulated deficit as of the adoption date. As a result of applying the modified retrospective method to adopt the new revenue guidance, the following adjustments were made to accounts on the consolidated balance sheet as of January 1, 2018:



	As Reported			Adjustments			Adjusted
	December 31, 2017			mini-VSAT Product			January 1, 2018
Cash, cash equivalent and marketable securities	$	42,915		$	—		$	42,915
Accounts receivable, net	28,316			—			28,316
Inventories	22,732			—			22,732
Contract assets	—			3,205			3,205
Prepaid expenses and other current assets	3,816			—			3,816
Long-lived assets	92,513			—			92,513
Other non-current assets	5,927			—			5,927
Contract assets, long-term	—			5,963			5,963
Non-current deferred income tax asset	20			202			222
Total assets	$	196,239		$	9,370		$	205,609
Accounts payable, accrued expenses, and other current liabilities	$	36,430		—			$	36,430
Deferred revenue, current	6,919			(6,919		)	—
Contract liabilities	—			11,039			11,039
Long-term contract liabilities	—			7,998			7,998
Other long-term liabilities	2,653			—			2,653
Long-term debt, excluding current portion	44,572			—			44,572
Total liabilities	$	90,574		$	12,118		$	102,692
Accumulated deficit	(4,417		)	(2,748		)	(7,165		)
Common stock, additional paid-in capital, and accumulated other comprehensive loss	110,082			—			110,082
Total stockholders’ equity	$	105,665		$	(2,748	)	$	102,917
Total liabilities and stockholders’ equity	$	196,239		$	9,370		$	205,609

mini-VSAT Broadband

Under the previous guidance, promised products and services under certain contracts were determined to be separate units of accounting. Under ASC 606, the products and services for these contracts are not considered separate performance obligations because they are not distinct in the context of the contract. As a result, under ASC 606 this revenue will be recognized over the estimated customer's life rather than at a point in time under the previous guidance. In conjunction with the January 1, 2018 adoption of ASC 606, the Company increased its accumulated deficit by $2,748, reflecting the deferral of $12,118 in revenue and $9,370 of cost of revenues, for contracts that were not complete as of the date of adoption.

Cost to Obtain a Customer Contract

Prior to the adoption of ASC 606, the Company expensed commissions paid to internal sales representatives and external sales representatives for obtaining mini-VSAT product contracts in the period the commissions were earned. Under ASC 606, for certain contracts in which the products and services are not considered separate performance obligation, the Company currently capitalizes these incremental costs of obtaining customer contracts and amortizes them over the estimated customer life of 5 years. The net impact of these changes to the treatment of commissions resulted in a $191 adjustment to accumulated deficit as of January 1, 2018.

Income Taxes

The adoption of ASC 606 primarily resulted in a deferment of revenue as of December 31, 2017, which in turn generated additional deferred tax assets that ultimately increased the Company's net deferred tax asset position by $203 as of January 1, 2018 related to sales made by certain international jurisdictions. As the Company fully reserves its net deferred tax assets generated in the U.S., this impact was offset by a corresponding increase to the valuation allowance.

Impact of New Revenue Guidance on Financial Statement Line Items

The following tables compare the reported consolidated balance sheet, statement of operations and cash flows, as of and for the three months ended June 30, 2018, to the pro forma amounts that would have been reported if the previous guidance had been in effect:



	As of June 30, 2018
Balance Sheet	As reported			Pro forma as if the previous accounting guidance had been in effect
Cash, cash equivalent and marketable securities	$	34,872		$	34,872
Accounts receivable, net	29,837			29,837
Inventories	22,912			22,912
Contract assets	3,419			—
Prepaid expenses and other current assets	3,339			3,339
Long-lived assets	96,049			96,049
Other non-current assets	6,735			6,735
Contract assets, long-term	6,266			—
Non-current deferred income tax asset	198			21
Total assets	$	203,627		$	193,765
Accounts payable, accrued expenses, and other current liabilities	$	38,403		$	38,403
Deferred revenue, current	—			6,716
Contract liabilities	11,051			—
Long-term contract liabilities	8,374			—
Other long-term liabilities	4,793			4,793
Long-term debt, excluding current portion	38,575			38,575
Total liabilities	$	101,196		$	88,487
Accumulated deficit	(12,401		)	(9,554		)
Common stock, additional paid-in capital, and accumulated other comprehensive loss	114,832			114,832
Total stockholders’ equity	$	102,431		$	105,278
Total liabilities and stockholders’ equity	$	203,627		$	193,765

Total reported assets and reported liabilities were $9,862 and $12,709, respectively, greater than the pro forma balance sheet, which assumes that the previous guidance remained in effect as of June 30, 2018. This difference was largely due to the deferral of revenue and associated contract costs in connection with the treatment of certain mini-VSAT customer contracts in which the products and services were not distinct in the context of the contract.



	Three Months Ended June 30, 2018						Six Months Ended June 30, 2018
Consolidated Statement of Operations	As reported			Pro forma as if the previous accounting guidance had been in effect			As reported			Pro forma as if the previous accounting guidance had been in effect
Sales:
Product	$	16,162		$	16,344		$	30,154		$	30,744
Service	27,230			27,230			53,339			53,339
Net Sales	43,392			43,574			83,493			84,083
Costs and expenses:
Costs of product sales	10,094			10,161			19,017			19,493
Costs of service sales	15,498			15,498			29,314			29,314
Research and development	3,565			3,565			7,499			7,499
Sales, marketing and support	8,494			8,536			17,435			17,476
General and administrative	6,928			6,928			14,595			14,595
Total operating expenses	44,579			44,688			87,860			88,377
Loss from operations	(1,187		)	(1,114		)	(4,367		)	(4,294		)
Other income (expense), net	173			173			(362		)	(362		)
Loss before income tax expense	(1,014		)	(941		)	(4,729		)	(4,656		)
Income tax expense	329			313			507			482
Net loss	$	(1,343	)	$	(1,254	)	$	(5,236	)	$	(5,138	)

Net loss per common share:
Basic and diluted	$	(0.08	)	$	(0.07	)	$	(0.31	)	$	(0.30	)

The following paragraphs summarize the significant changes to the Company’s consolidated statement of operations for the three and six months ended June 30, 2018 resulting from the adoption of ASC 606 on January 1, 2018 compared to the results the Company would have reported under the prior guidance:

•

ASC 606 deferred the recognition of revenue and fulfillment costs related to mini-VSAT contracts in which the performance obligations for products and services are not distinct in the context of the contract. The deferred revenue and associated fulfillment costs will be recognized over the estimated customer life of five years. Under the previous guidance, these promised products and services were determined to be separate units of accounting, as a result of which the product revenue was recognized at the time of sale. As a result of the adoption of ASC 606, revenues and related cost of revenues were $182 and $67 lower, respectively, for the three months ended June 30, 2018 and $590 and $476 lower, respectively, for the six months ended June 30, 2018 than they would have been under legacy GAAP as a result of the adoption of ASC 606.


•	ASC 606 resulted in the amortization of capitalized commission costs that were recorded as part of the cumulative effect adjustment upon adoption. Amortization of these capitalized costs to selling and marketing expenses, net of commission costs that were capitalized in the quarter, resulted in no meaningful impact on selling and marketing expenses in the quarter.

The net impact of accounting for revenue under the new guidance increased net loss by $89 and $98 for the three and six months ended June 30, 2018, respectively, with a decrease in basic and diluted loss per share of $0.01 and $0.01 for the three and six months ended June 30, 2018, respectively.



	Six Months Ended June 30, 2018
Statement of Cash Flows	As reported			Pro forma as if the previous accounting guidance had been in effect
Net loss	$	(5,236	)	$	(5,138	)
Non cash adjustments to reconcile net loss to net cash used in operating activities	7,821			7,796
Changes in operating assets and liabilities:
Accounts receivable and inventories	(1,856		)	(1,856		)
Prepaid expenses, other assets, and contract assets	(1,022		)	(505		)
Deferred revenue, contract liabilities, and long-term contract liabilities	527			(63		)
Accounts payable, accrued compensation, warranty, other, and other long-term liabilities	(1,432		)	(1,432		)
Net cash used in operating activities	$	(1,198	)	$	(1,198	)

The adoption of ASC 606 had no impact on the Company’s cash flows from operations. The aforementioned impacts resulted in offsetting shifts in cash flows throughout net loss and various changes in working capital balances.



	Contract Assets				Contract Liabilities
	Current		Non-Current		Current		Non-Current
Balance at January 1, 2018	$	3,205	$	5,963	$	11,039	$	7,998
Balance at June 30, 2018	$	3,419	$	6,266	$	11,051	$	8,374

Revenue recognized during the three and six months ended June 30, 2018 from amounts included in deferred revenue at the beginning of the fiscal year was approximately $1,193 and $2,408, respectively.

Business and Credit Concentrations

No single customer accounted for 10% or more of the Company's consolidated net sales for three and six months ended June 30, 2018 or 2017 or accounts receivable at June 30, 2018 or December 31, 2017.

Derivative Instruments and Hedging Activities

6 Months Ended

Jun. 30, 2018

General Discussion of Derivative Instruments and Hedging Activities [Abstract]

Derivative Instruments and Hedging Activities

Effective April 1, 2010, in order to reduce the volatility of cash outflows that arise from changes in interest rates, the Company entered into two interest rate swap agreements. These interest rate swap agreements are intended to hedge the Company’s mortgage loan related to its headquarters facility in Middletown, Rhode Island by fixing the interest rates specified in the mortgage loan to 5.9% for half of the principal amount outstanding and 6.1% for the remaining half of the principal amount outstanding as of April 1, 2010 until the mortgage loan expires on April 16, 2019. The Company does not use derivatives for speculative purposes. For a derivative that is designated as a cash flow hedge, changes in the fair value of the derivative are recognized in accumulated other comprehensive (loss) income (AOCI) to the extent the derivative is effective at offsetting the changes in the cash flows being hedged until the hedged item affects earnings. As the Company makes the required principal and interest payments under the mortgage loan and the related interest rate swaps are settled, the Company reclassifies the amounts recorded in AOCI related to the changes in the fair value of the settled interest rate swaps to earnings. To the extent there is any hedge ineffectiveness, changes in fair value relating to the ineffective portion are immediately recognized in earnings in other income (expense) in the consolidated statements of operations. The interest rate swap is recorded within accrued other liabilities on the balance sheet. The critical terms of the interest rate swaps were designed to mirror the terms of the Company’s mortgage loans. The Company designated these derivatives as cash flow hedges of the variability of the LIBOR-based interest payments on principal over a nine-year period, which ends on April 1, 2019. As of June 30, 2018, the Company determined that the existence of hedge ineffectiveness, if any, was immaterial and all changes in the fair value of the interest rate caps were recorded in the consolidated statements of comprehensive (loss) income as a component of AOCI.

As of June 30, 2018, the Company had the following outstanding interest rate derivatives that were designated as cash flow hedges of interest rate risk:



Interest Rate Derivatives	Notional (in thousands)		Asset (Liability)			Effective Date	Maturity Date	Index	Strike Rate
Interest rate swap	$	1,345	$	(15	)	April 1, 2010	April 1, 2019	1-month LIBOR	5.91	%
Interest rate swap	$	1,345	$	(17	)	April 1, 2010	April 1, 2019	1-month LIBOR	6.07	%

As of December 31, 2017, the Company had the following outstanding interest rate derivatives that were designated as cash flow hedges of interest rate risk:



Interest Rate Derivatives	Notional (in thousands)		Asset (Liability)			Effective Date	Maturity Date	Index	Strike Rate
Interest rate swap	$	1,389	$	(33	)	April 1, 2010	April 1, 2019	1-month LIBOR	5.91	%
Interest rate swap	$	1,389	$	(36	)	April 1, 2010	April 1, 2019	1-month LIBOR	6.07	%

Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	(18) Income Taxes The Company’s effective tax rate for the three and six months ended June 30, 2018 was (32.4)% and (10.7)%, respectively, compared with (21.3)% and (8.1)% for the corresponding periods in the prior year, respectively. The effective income tax rates are based on estimated income for the year, the estimated composition of the income in different jurisdictions and discrete adjustments, if any, in the applicable periods, including retroactive changes in tax legislation, settlements of tax audits or assessments, the resolution or identification of tax position uncertainties and acquisitions of other companies. For both the three and six months ended June 30, 2018 and 2017, the effective tax rates were lower than the statutory tax rate primarily due to the Company maintaining a valuation allowance reserve on its US deferred tax assets and to the composition of income from foreign jurisdictions that were taxed at lower rates. The 2017 Tax Cuts and Jobs Act (the “Tax Act”), which was signed into law on December 22, 2017, has resulted in significant changes to the U.S. corporate income tax system. These changes include a federal statutory rate reduction from 35% to 21%, the elimination or reduction of certain domestic deductions and credits and limitations on the deductibility of interest expense and executive compensation. The 2017 Tax Act also transitions international taxation from a worldwide system to a modified territorial system and includes base erosion prevention measures on non-U.S. earnings, which has the effect of subjecting certain earnings of our foreign subsidiaries to U.S. taxation as global intangible low-taxed income (GILTI). The Securities and Exchange Commission released Staff Accounting Bulletin (SAB) No. 118 to provide guidance to companies on how to implement the accounting and disclosure changes as a result of the Tax Act. The SEC staff guidance has recognized that, due to the complexity and timing of the release of the Tax Act, the accounting for this change in the law may be incomplete upon issuance of a company's financial statements for the reporting period in which the Tax Act was enacted. SAB No. 118 states that if a company can determine a reasonable estimate for the effects of the Tax Act then this estimate can be included in the financial statements. The Company made a preliminary estimate of the Transition Toll Tax and the remeasurement of our deferred tax assets and liabilities as of December 31, 2017. The preliminary estimate is subject to change as we finalize our analysis and as interpretations of the provisions of the 2017 Tax Act continue to develop. The final determination of the Transition Toll Tax and the remeasurement of our deferred tax assets and liabilities will be completed as additional information becomes available, but no later than one year from the enactment of the 2017 Tax Act. U.S. Treasury regulations, administrative interpretations or court decisions interpreting the 2017 Tax Act may require further adjustments and changes in our estimates, which could have a material adverse effect on our business, results of operations, financial position and cash flows. The Company has not recorded any changes to this estimate for the six months ended June 30, 2018. The Company can make an accounting policy election to either recognize deferred taxes for temporary differences expected to reverse as GILTI in future years or provide for the tax expense related to GILTI resulting from those items in the year the tax is incurred. As of the date of this report, the Company is still evaluating the guidance and has not made a policy election related to the treatment of the GILTI tax. As of June 30, 2018 and December 31, 2017, the Company had reserves for uncertain tax positions of $1,444 and $1,570, respectively. The Company incurred $20 and $43 in interest and penalties for the three and six months ended June 30, 2018, respectively, which were recorded as a component of income tax expense. During the three months ended June 30, 2018, the Company recorded a reduction in reserves for uncertain tax positions of $162 as a result of a lapse of the statute of limitations. The Company estimates that it is reasonably possible that the balance of unrecognized tax benefits as of June 30, 2018 may decrease $208 in the next twelve months as a result of a lapse of statutes of limitations and settlements with taxing authorities. The Company’s tax jurisdictions include the United States, the United Kingdom, Denmark, Cyprus, Norway, Brazil, Singapore, Belgium, the Netherlands, Hong Kong, India and Japan. In general, the statute of limitations with respect to the Company's United States federal income taxes has expired for years prior to 2014, and the relevant state and foreign statutes vary. However, preceding years remain open to examination by United States federal and state and foreign taxing authorities to the extent of future utilization of net operating losses and research and development tax credits generated in each preceding year.

Capital Lease

6 Months Ended

Jun. 30, 2018

Minimum Capital Lease Payments [Abstract]

Capital Leases in Financial Statements of Lessee Disclosure [Text Block]

(19) Capital Lease

During the first quarter of 2018, the Company entered into a five-year capital lease for three satellite hubs for its HTS network. As of June 30, 2018, the gross costs and accumulated depreciation associated with this lease are included in revenue generating assets and amounted to $3,068 and $188, respectively. Property and equipment under capital leases are stated at the present value of minimum lease payments.

The property and equipment held under this capital lease are amortized on a straight‑line basis over the seven-year estimated useful life of the asset, since the lease meets the bargain purchase option criteria. Amortization of assets held under capital leases is included within depreciation expense. Depreciation expense for these capital assets was $110 and $188 for the three and six months ended June 30, 2018, respectively.

The future minimum capital lease payments under this capital lease as of June 30, 2018 are:




Remainder of 2018	$	312
2019	624
2020	624
2021	624
2022	624
2023	45
Total minimum lease payments	$	2,853

Less amount representing interest (1.53%)	$	(42	)
Present value of net minimum capital lease payments	$	2,811
Less current installments of obligation under accrued other	$	608
Obligations under other long-term liabilities, excluding current installments	$	2,203

Summary of Significant Accounting Policies (Policies)	6 Months Ended
Summary of Significant Accounting Policies (Policies)	Jun. 30, 2018
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Basis of Presentation The accompanying consolidated financial statements of KVH Industries, Inc. and its wholly owned subsidiaries have been prepared in accordance with accounting principles generally accepted in the United States of America. The Company has evaluated all subsequent events through the date of this filing. All significant intercompany accounts and transactions have been eliminated in consolidation. The consolidated financial statements have not been audited by the Company’s independent registered public accounting firm and include all adjustments (consisting of only normal recurring adjustments) which are, in the opinion of management, necessary for a fair presentation of the financial condition, results of operations, and cash flows for the periods presented. These consolidated financial statements do not include all disclosures associated with annual financial statements and accordingly should be read in conjunction with the Company’s consolidated financial statements and related notes included in the Company’s annual report on Form 10-K for the year ended December 31, 2017 filed on March 2, 2018 with the Securities and Exchange Commission. The results for the three and six months ended June 30, 2018 are not necessarily indicative of operating results for the remainder of the year.
Significant Estimates and Assumptions [Policy Text Block]	Significant Estimates and Assumptions and Other Significant Non-Recurring Transactions The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of sales and expenses during the reporting periods. As described in the Company’s annual report on Form 10-K, the most significant estimates and assumptions by management affect the Company’s revenue recognition, valuation of accounts receivable, valuation of inventory, valuations and deferred purchase price consideration related to asset acquisition, expected future cash flows including growth rates, discount rates, terminal values and other assumptions and estimates used to evaluate the recoverability of long-lived assets and goodwill, estimated fair values of long-lived assets, including goodwill, amortization methods and periods, certain accrued expenses and other related charges, stock-based compensation, contingent liabilities, key valuation assumptions for its share-based awards, estimated fulfillment costs for warranty obligations, tax reserves and recoverability of the Company’s net deferred tax assets and related valuation allowance. The Company has reviewed these estimates and determined that these remain the most significant estimates for the six months ended June 30, 2018. Although the Company regularly assesses these estimates, actual results could differ materially from these estimates. Changes in estimates are recorded in the period in which they become known. The Company bases its estimates on historical experience and various other assumptions that it believes to be reasonable under the circumstances. The only material change to the significant accounting policies disclosed in the Company’s annual report on Form 10-K for the year ended December 31, 2017 was the Company’s adoption of Accounting Standards Codification (ASC) 606, Revenue from Contracts with Customers effective January 1, 2018. Please see footnote 16 for further discussion. On February 27, 2018, the Company entered into a stock purchase agreement with SKY Perfect JSAT Corporation, or SJC, pursuant to which the Company agreed to sell 377 shares of treasury stock to SJC for a purchase price of $11.95 per share, or an aggregate of $4,500, in a private placement. The transaction closed on February 28, 2018. During the first quarter of 2018, the Company entered into a five-year capital lease for three satellite hubs for the HTS network. Please see footnote 19 for further discussion.

Stock-Based Compensation (Policies)	6 Months Ended
Stock-Based Compensation (Policies)	Jun. 30, 2018
Share-based Compensation [Abstract]
Compensation-Stock Based Compensation	The Company recognizes stock-based compensation in accordance with the provisions of ASC Topic 718, Compensation-Stock Compensation. Stock-based compensation expense, excluding compensation charges related to our employee stock purchase plan, or the ESPP, was $725 and $849 for the three months ended June 30, 2018 and 2017, respectively, and $1,568 and $1,792 for the six months ended June 30, 2018 and 2017, respectively. As of June 30, 2018, there was $2,861 of total unrecognized compensation expense related to stock options, which is expected to be recognized over a weighted-average period of 3.14 years. As of June 30, 2018, there was $4,232 of total unrecognized compensation expense related to restricted stock awards, which is expected to be recognized over a weighted-average period of 2.56 years.

Fair Value Measurements (Policies)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements and Disclosures


Level 1:	Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities. The Company’s Level 1 assets are investments in money market mutual funds and certificates of deposit.


Level 2:	Quoted prices for similar assets or liabilities in active markets; or observable prices that are based on observable market data, based on directly or indirectly market-corroborated inputs. The Company’s Level 2 liabilities are interest rate swaps.


Level 3:	Unobservable inputs that are supported by little or no market activity, and are developed based on the best information available given the circumstances. The Company has no Level 3 assets.

Assets and liabilities measured at fair value are based on the valuation techniques identified in the table below. The valuation techniques are:


(a)	Market approach—prices and other relevant information generated by market transactions involving identical or comparable assets.

(b)

Goodwill and Intagible Assets (Policies)	6 Months Ended
Goodwill and Intagible Assets (Policies)	Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets, Impairment Test Policy

Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2018

Marketable Securities [Abstract]

Available-for-sale Securities [Table Text Block]


(4)	Marketable Securities

Marketable securities as of June 30, 2018 and December 31, 2017 consisted of the following:



June 30, 2018	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Money market mutual funds	$	335	$	—	$	—	$	335
Total marketable securities designated as available-for-sale	$	335	$	—	$	—	$	335



December 31, 2017	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Money market mutual funds	$	7,318	$	—	$	—		$	7,318
Certificates of deposit	1,002		—		(1		)	1,001
Total marketable securities designated as available-for-sale	$	8,320	$	—	$	(1	)	$	8,319

Available-for-sale Securities, Debt Maturities, Amortized Cost And Fair Value Basis [Table Text Block]



June 30, 2018	Amortized Cost		Fair Value
Due in less than one year	$	—	$	—
December 31, 2017	Amortized Cost		Fair Value
Due in less than one year	$	1,002	$	1,001

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References + Details

Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2018

Share-based Compensation [Abstract]

Schedule of share-based payment award, stock options, valuation assumptions

The weighted average assumptions utilized to determine the fair value of options granted during the six months ended June 30, 2018 and 2017 were as follows:




	Six Months Ended June 30,
	2018		2017
Risk-free interest rate	2.81	%	1.96	%
Expected volatility	36.60	%	35.53	%
Expected life (in years)	4.29		4.22
Dividend yield	0	%	0	%

Schedule of Share-based Compensation, Activity



	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Cost of product sales	$	11	$	72	$	82	$	154
Cost of service sales	—		1		—		1
Research and development	149		170		319		359
Sales, marketing and support	166		221		347		489
General and administrative	413		388		844		809
	$	739	$	852	$	1,592	$	1,812

Schedule of Accumulated Other Comprehensive Income (Loss)



	Foreign Currency Translation			Unrealized Gain (Loss) on Available for Sale Marketable Securities			Interest Rate Swaps			Total Accumulated Other Comprehensive Loss
Balance, March 31, 2017	$	(16,050	)	$	—		$	(131	)	$	(16,181	)
Other comprehensive income (loss) before reclassifications	2,440			(3		)	(1		)	2,436
Amounts reclassified from AOCI to Other income, net	—			—			19			19
Net other comprehensive income (loss), June 30, 2017	2,440			(3		)	18			2,455
Balance, June 30, 2017	$	(13,610	)	$	(3	)	$	(113	)	$	(13,726	)

The balances for the six months ended June 30, 2018 and 2017 are as follows:



	Foreign Currency Translation			Unrealized Gain (Loss) on Available for Sale Marketable Securities			Interest Rate Swaps			Total Accumulated Other Comprehensive Loss
Balance, December 31, 2017	$	(11,247	)	$	(1	)	$	(69	)	$	(11,317	)
Other comprehensive (loss) income before reclassifications	(1,422		)	1			10			(1,411		)
Amounts reclassified from AOCI to Other income, net	—			—			27			27
Net other comprehensive (loss) income, June 30, 2018	(1,422		)	1			37			(1,384		)
Balance, June 30, 2018	$	(12,669	)	$	—		$	(32	)	$	(12,701	)



	Foreign Currency Translation			Unrealized Gain (Loss) on Available for Sale Marketable Securities			Interest Rate Swaps			Total Accumulated Other Comprehensive Loss
Balance, December 31, 2016	$	(16,651	)	$	—		$	(158	)	$	(16,809	)
Other comprehensive income (loss) before reclassifications	3,041			(3		)	4			3,042
Amounts reclassified from AOCI to Other income, net	—			—			41			41
Net other comprehensive income (loss), June 30, 2017	3,041			(3		)	45			3,083
Balance, June 30, 2017	$	(13,610	)	$	(3	)	$	(113	)	$	(13,726	)

Net Income (Loss) per Common Share (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Schedule of reconciliation of basic and diluted weighted average common shares outstanding

A reconciliation of the basic and diluted weighted average common shares outstanding is as follows:



	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2018	2017	2018	2017
Weighted average common shares outstanding—basic	17,140	16,446	16,942	16,354
Dilutive common shares issuable in connection with stock plans	—	—	—	—
Weighted average common shares outstanding—diluted	17,140	16,446	16,942	16,354

Inventories (Tables)

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Components of inventories

Components of inventories consist of the following:



	June 30, 2018		December 31, 2017
Raw materials	$	13,387	$	13,347
Work in process	2,812		2,137
Finished goods	6,713		7,248
	$	22,912	$	22,732

Product Warranty (Tables)

6 Months Ended

Jun. 30, 2018

Product Warranties Disclosures [Abstract]

Summary of product warranty activity

The following table summarizes product warranty activity during 2018 and 2017:



	Six Months Ended
	June 30,
	2018			2017
Beginning balance	$	2,074		$	2,280
Charges to expense	1,156			500
Costs incurred	(1,191		)	(373		)
Ending balance	$	2,039		$	2,407

Debt Long-term debt (Tables)

6 Months Ended

Jun. 30, 2018

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments [Table Text Block]

Long-term debt consisted of the following:



	June 30, 2018		December 31, 2017
Term note	$	40,875	$	44,275
Mortgage loan	2,690		2,779
Total	43,565		47,054
Less amounts classified as current	4,990		2,482
Long-term debt, excluding current portion	$	38,575	$	44,572

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21475-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21538-112644

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21506-112644

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21521-112644

+ Details

Segment Reporting (Tables)

6 Months Ended

Jun. 30, 2018

Segment Reporting [Abstract]

Schedule of operations by geographic segment

Net sales and operating income (loss) for the Company's reporting segments and the Company's loss before income tax expense for the three and six months ended June 30, 2018 and 2017 were as follows:



	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2018			2017			2018			2017
Net sales:
Mobile connectivity	$	33,764		$	34,034		$	66,513		$	68,321
Inertial navigation	9,628			6,415			16,980			12,339
Consolidated net sales	$	43,392		$	40,449		$	83,493		$	80,660

Operating income (loss):
Mobile connectivity	$	1,149		$	2,638		$	2,221		$	3,260
Inertial navigation	1,564			362			1,898			318
Subtotal	2,713			3,000			4,119			3,578
Unallocated, net	(3,900		)	(4,368		)	(8,486		)	(9,416		)
Loss from operations	(1,187		)	(1,368		)	(4,367		)	(5,838		)
Net interest and other income (expense)	173			(302		)	(362		)	(557		)
Loss before income tax expense	$	(1,014	)	$	(1,670	)	(4,729		)	$	(6,395	)

Depreciation expense and amortization expense for the Company's segments are presented in the following table for the periods presented:



	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
Depreciation expense:
Mobile connectivity	$	1,810	$	1,394	$	3,370	$	2,872
Inertial navigation	254		199		506		395
Unallocated	128		21		269		40
Total consolidated depreciation expense	$	2,192	$	1,614	$	4,145	$	3,307

Amortization expense:
Mobile connectivity	$	1,046	$	1,102	$	2,143	$	2,170
Inertial navigation	—		—		—		—
Unallocated	—		—		—		—
Total consolidated amortization expense	$	1,046	$	1,102	$	2,143	$	2,170

Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Schedule of assets and liabilities measured at fair value on recurring basis



June 30, 2018	Total		Level 1		Level 2		Level 3		Valuation Technique
Assets
Money market mutual funds	$	335	$	335	$	—	$	—	(a)
Liabilities
Interest rate swaps	32		—		32		—		(b)



December 31, 2017	Total		Level 1		Level 2		Level 3		Valuation Technique
Assets
Money market mutual funds	$	7,318	$	7,318	$	—	$	—	(a)
Certificates of deposit	1,001		1,001		—		—		(a)
Liabilities
Interest rate swaps	69		—		69		—		(b)

Goodwill and Intagible Assets (Tables)

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of goodwill

The following table sets forth the changes in the carrying amount of goodwill for the six months ended June 30, 2018:



	Amounts
Balance at December 31, 2017	$	33,872
Foreign currency translation adjustment	(635		)
Balance at June 30, 2018	$	33,237

Schedule of finite-lived intangible assets

The changes in the carrying amount of intangible assets during the six months ended June 30, 2018 are as follows:



	Amounts
Balance at December 31, 2017	$	15,120
Amortization expense	(2,143		)
Foreign currency translation adjustment	(234		)
Balance at June 30, 2018	$	12,743

Finite-lived Intangible Assets Amortization Expense [Table Text Block]

Acquired intangible assets are subject to amortization. The following table summarizes acquired intangible assets at June 30, 2018 and December 31, 2017, respectively:



	Gross Carrying Amount		Accumulated Amortization		Net Carrying Value
June 30, 2018
Subscriber relationships	$	17,750	$	9,371	$	8,379
Distribution rights	4,328		1,595		2,733
Internally developed software	2,327		2,327		—
Proprietary content	8,206		6,697		1,509
Intellectual property	2,284		2,284		—
Favorable lease	647		525		122
	$	35,542	$	22,799	$	12,743
December 31, 2017
Subscriber relationships	$	17,912	$	8,347	$	9,565
Distribution rights	4,385		1,450		2,935
Internally developed software	2,324		2,206		118
Proprietary content	8,223		5,908		2,315
Intellectual property	2,284		2,284		—
Favorable lease	648		461		187
	$	35,776	$	20,656	$	15,120

Schedule of expected amortization expense

Estimated future amortization expense remaining at June 30, 2018 for intangible assets acquired is as follows:



Remainder of 2018	$	1,940
2019	3,057
2020	2,244
2021	2,244
2022	1,472
Thereafter	1,786
Total future amortization expense	$	12,743

Revenue from Contracts with Customers (ASC 606) (Tables)

6 Months Ended

Jun. 30, 2018

Disaggregation of Revenue [Abstract]

Disaggregation of Revenue [Table Text Block]

Disaggregation of Revenue

The following table summarizes net sales from contracts with customers for the three and six months ended June 30, 2018:



	Three Months Ended		Six Months Ended
	June 30, 2018
Mobile connectivity product, transferred at point in time	$	6,731	$	13,401
Mobile connectivity product, transferred over time	1,372		2,622
Mobile connectivity service	25,661		50,490
Inertial navigation product	8,059		14,131
Inertial navigation service	1,569		2,849
Total net sales	$	43,392	$	83,493

Schedule of Prospective Adoption of New Accounting Pronouncements [Table Text Block]



	Three Months Ended June 30, 2018						Six Months Ended June 30, 2018
Consolidated Statement of Operations	As reported			Pro forma as if the previous accounting guidance had been in effect			As reported			Pro forma as if the previous accounting guidance had been in effect
Sales:
Product	$	16,162		$	16,344		$	30,154		$	30,744
Service	27,230			27,230			53,339			53,339
Net Sales	43,392			43,574			83,493			84,083
Costs and expenses:
Costs of product sales	10,094			10,161			19,017			19,493
Costs of service sales	15,498			15,498			29,314			29,314
Research and development	3,565			3,565			7,499			7,499
Sales, marketing and support	8,494			8,536			17,435			17,476
General and administrative	6,928			6,928			14,595			14,595
Total operating expenses	44,579			44,688			87,860			88,377
Loss from operations	(1,187		)	(1,114		)	(4,367		)	(4,294		)
Other income (expense), net	173			173			(362		)	(362		)
Loss before income tax expense	(1,014		)	(941		)	(4,729		)	(4,656		)
Income tax expense	329			313			507			482
Net loss	$	(1,343	)	$	(1,254	)	$	(5,236	)	$	(5,138	)

Net loss per common share:
Basic and diluted	$	(0.08	)	$	(0.07	)	$	(0.31	)	$	(0.30	)



	Six Months Ended June 30, 2018
Statement of Cash Flows	As reported			Pro forma as if the previous accounting guidance had been in effect
Net loss	$	(5,236	)	$	(5,138	)
Non cash adjustments to reconcile net loss to net cash used in operating activities	7,821			7,796
Changes in operating assets and liabilities:
Accounts receivable and inventories	(1,856		)	(1,856		)
Prepaid expenses, other assets, and contract assets	(1,022		)	(505		)
Deferred revenue, contract liabilities, and long-term contract liabilities	527			(63		)
Accounts payable, accrued compensation, warranty, other, and other long-term liabilities	(1,432		)	(1,432		)
Net cash used in operating activities	$	(1,198	)	$	(1,198	)



	As Reported			Adjustments			Adjusted
	December 31, 2017			mini-VSAT Product			January 1, 2018
Cash, cash equivalent and marketable securities	$	42,915		$	—		$	42,915
Accounts receivable, net	28,316			—			28,316
Inventories	22,732			—			22,732
Contract assets	—			3,205			3,205
Prepaid expenses and other current assets	3,816			—			3,816
Long-lived assets	92,513			—			92,513
Other non-current assets	5,927			—			5,927
Contract assets, long-term	—			5,963			5,963
Non-current deferred income tax asset	20			202			222
Total assets	$	196,239		$	9,370		$	205,609
Accounts payable, accrued expenses, and other current liabilities	$	36,430		—			$	36,430
Deferred revenue, current	6,919			(6,919		)	—
Contract liabilities	—			11,039			11,039
Long-term contract liabilities	—			7,998			7,998
Other long-term liabilities	2,653			—			2,653
Long-term debt, excluding current portion	44,572			—			44,572
Total liabilities	$	90,574		$	12,118		$	102,692
Accumulated deficit	(4,417		)	(2,748		)	(7,165		)
Common stock, additional paid-in capital, and accumulated other comprehensive loss	110,082			—			110,082
Total stockholders’ equity	$	105,665		$	(2,748	)	$	102,917
Total liabilities and stockholders’ equity	$	196,239		$	9,370		$	205,609



	Contract Assets				Contract Liabilities
	Current		Non-Current		Current		Non-Current
Balance at January 1, 2018	$	3,205	$	5,963	$	11,039	$	7,998
Balance at June 30, 2018	$	3,419	$	6,266	$	11,051	$	8,374



	As of June 30, 2018
Balance Sheet	As reported			Pro forma as if the previous accounting guidance had been in effect
Cash, cash equivalent and marketable securities	$	34,872		$	34,872
Accounts receivable, net	29,837			29,837
Inventories	22,912			22,912
Contract assets	3,419			—
Prepaid expenses and other current assets	3,339			3,339
Long-lived assets	96,049			96,049
Other non-current assets	6,735			6,735
Contract assets, long-term	6,266			—
Non-current deferred income tax asset	198			21
Total assets	$	203,627		$	193,765
Accounts payable, accrued expenses, and other current liabilities	$	38,403		$	38,403
Deferred revenue, current	—			6,716
Contract liabilities	11,051			—
Long-term contract liabilities	8,374			—
Other long-term liabilities	4,793			4,793
Long-term debt, excluding current portion	38,575			38,575
Total liabilities	$	101,196		$	88,487
Accumulated deficit	(12,401		)	(9,554		)
Common stock, additional paid-in capital, and accumulated other comprehensive loss	114,832			114,832
Total stockholders’ equity	$	102,431		$	105,278
Total liabilities and stockholders’ equity	$	203,627		$	193,765

Revenue from Contracts with Customers (ASC 606) - Impact of New Revenue Guidance on Financial Statement Line Items (Tables)

6 Months Ended

Jun. 30, 2018

Impact of New Revenue Guidance on Financial Statement Line Items [Abstract]

Schedule of Prospective Adoption of New Accounting Pronouncements [Table Text Block]



	Three Months Ended June 30, 2018						Six Months Ended June 30, 2018
Consolidated Statement of Operations	As reported			Pro forma as if the previous accounting guidance had been in effect			As reported			Pro forma as if the previous accounting guidance had been in effect
Sales:
Product	$	16,162		$	16,344		$	30,154		$	30,744
Service	27,230			27,230			53,339			53,339
Net Sales	43,392			43,574			83,493			84,083
Costs and expenses:
Costs of product sales	10,094			10,161			19,017			19,493
Costs of service sales	15,498			15,498			29,314			29,314
Research and development	3,565			3,565			7,499			7,499
Sales, marketing and support	8,494			8,536			17,435			17,476
General and administrative	6,928			6,928			14,595			14,595
Total operating expenses	44,579			44,688			87,860			88,377
Loss from operations	(1,187		)	(1,114		)	(4,367		)	(4,294		)
Other income (expense), net	173			173			(362		)	(362		)
Loss before income tax expense	(1,014		)	(941		)	(4,729		)	(4,656		)
Income tax expense	329			313			507			482
Net loss	$	(1,343	)	$	(1,254	)	$	(5,236	)	$	(5,138	)

Net loss per common share:
Basic and diluted	$	(0.08	)	$	(0.07	)	$	(0.31	)	$	(0.30	)



	Six Months Ended June 30, 2018
Statement of Cash Flows	As reported			Pro forma as if the previous accounting guidance had been in effect
Net loss	$	(5,236	)	$	(5,138	)
Non cash adjustments to reconcile net loss to net cash used in operating activities	7,821			7,796
Changes in operating assets and liabilities:
Accounts receivable and inventories	(1,856		)	(1,856		)
Prepaid expenses, other assets, and contract assets	(1,022		)	(505		)
Deferred revenue, contract liabilities, and long-term contract liabilities	527			(63		)
Accounts payable, accrued compensation, warranty, other, and other long-term liabilities	(1,432		)	(1,432		)
Net cash used in operating activities	$	(1,198	)	$	(1,198	)



	As Reported			Adjustments			Adjusted
	December 31, 2017			mini-VSAT Product			January 1, 2018
Cash, cash equivalent and marketable securities	$	42,915		$	—		$	42,915
Accounts receivable, net	28,316			—			28,316
Inventories	22,732			—			22,732
Contract assets	—			3,205			3,205
Prepaid expenses and other current assets	3,816			—			3,816
Long-lived assets	92,513			—			92,513
Other non-current assets	5,927			—			5,927
Contract assets, long-term	—			5,963			5,963
Non-current deferred income tax asset	20			202			222
Total assets	$	196,239		$	9,370		$	205,609
Accounts payable, accrued expenses, and other current liabilities	$	36,430		—			$	36,430
Deferred revenue, current	6,919			(6,919		)	—
Contract liabilities	—			11,039			11,039
Long-term contract liabilities	—			7,998			7,998
Other long-term liabilities	2,653			—			2,653
Long-term debt, excluding current portion	44,572			—			44,572
Total liabilities	$	90,574		$	12,118		$	102,692
Accumulated deficit	(4,417		)	(2,748		)	(7,165		)
Common stock, additional paid-in capital, and accumulated other comprehensive loss	110,082			—			110,082
Total stockholders’ equity	$	105,665		$	(2,748	)	$	102,917
Total liabilities and stockholders’ equity	$	196,239		$	9,370		$	205,609



	Contract Assets				Contract Liabilities
	Current		Non-Current		Current		Non-Current
Balance at January 1, 2018	$	3,205	$	5,963	$	11,039	$	7,998
Balance at June 30, 2018	$	3,419	$	6,266	$	11,051	$	8,374



	As of June 30, 2018
Balance Sheet	As reported			Pro forma as if the previous accounting guidance had been in effect
Cash, cash equivalent and marketable securities	$	34,872		$	34,872
Accounts receivable, net	29,837			29,837
Inventories	22,912			22,912
Contract assets	3,419			—
Prepaid expenses and other current assets	3,339			3,339
Long-lived assets	96,049			96,049
Other non-current assets	6,735			6,735
Contract assets, long-term	6,266			—
Non-current deferred income tax asset	198			21
Total assets	$	203,627		$	193,765
Accounts payable, accrued expenses, and other current liabilities	$	38,403		$	38,403
Deferred revenue, current	—			6,716
Contract liabilities	11,051			—
Long-term contract liabilities	8,374			—
Other long-term liabilities	4,793			4,793
Long-term debt, excluding current portion	38,575			38,575
Total liabilities	$	101,196		$	88,487
Accumulated deficit	(12,401		)	(9,554		)
Common stock, additional paid-in capital, and accumulated other comprehensive loss	114,832			114,832
Total stockholders’ equity	$	102,431		$	105,278
Total liabilities and stockholders’ equity	$	203,627		$	193,765

Derivative Instruments and Hedging Activities (Tables)

6 Months Ended

Jun. 30, 2018

General Discussion of Derivative Instruments and Hedging Activities [Abstract]

Schedule of interest rate derivatives designated as cash flow hedges of interest rate risk

As of June 30, 2018, the Company had the following outstanding interest rate derivatives that were designated as cash flow hedges of interest rate risk:



Interest Rate Derivatives	Notional (in thousands)		Asset (Liability)			Effective Date	Maturity Date	Index	Strike Rate
Interest rate swap	$	1,345	$	(15	)	April 1, 2010	April 1, 2019	1-month LIBOR	5.91	%
Interest rate swap	$	1,345	$	(17	)	April 1, 2010	April 1, 2019	1-month LIBOR	6.07	%

Schedule of Future Minimum Lease Payments for Capital Leases (Tables)

6 Months Ended

Jun. 30, 2018

Schedule of Future Minimum Lease Payments for Capital Leases [Abstract]

Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]

The future minimum capital lease payments under this capital lease as of June 30, 2018 are:




Remainder of 2018	$	312
2019	624
2020	624
2021	624
2022	624
2023	45
Total minimum lease payments	$	2,853

Less amount representing interest (1.53%)	$	(42	)
Present value of net minimum capital lease payments	$	2,811
Less current installments of obligation under accrued other	$	608
Obligations under other long-term liabilities, excluding current installments	$	2,203

Summary of Significant Accounting Policies (Details) $ / shares in Units, shares in Thousands, $ in Thousands		6 Months Ended
	Feb. 28, 2018 USD ($) $ / shares shares	Jun. 30, 2018 USD ($) hub	Jun. 30, 2017 USD ($)
Accounting Policies [Line Items]
Stock Issued During Period, Shares, Treasury Stock Reissued \| shares	377
Sale of Stock, Price Per Share \| $ / shares	$ 11.95
Proceeds from Sale of Treasury Stock \| $	$ 4,500	$ 4,500	$ 0
Satellite hubs for HTS network [Member]
Accounting Policies [Line Items]
Lessee, Operating Lease, Term of Contract		5 years
Number of satellite hubs leased \| hub		3

Marketable Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	$ 335	$ 8,320
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	0	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0	(1)
Available-for-sale Securities	335	8,319
Mutual Funds, Money Market [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	335	7,318
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	0	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0	0
Available-for-sale Securities	335	7,318
Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis	0	1,002
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value	$ 0	$ 1,001

Marketable Securities Maturity Schedule (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	$ 335	$ 8,320
Available-for-sale Securities	335	8,319
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	0	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0	(1)
Mutual Funds, Money Market [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	335	7,318
Available-for-sale Securities	335	7,318
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	0	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	0	0
Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis	0	1,002
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value	$ 0	1,001
Certificates of Deposit
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis		1,002
Available-for-sale Securities		1,001
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax		0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax		$ (1)

Stock-Based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	1,368,000		1,368,000
Allocated Share-based Compensation Expense	$ 739	$ 852	$ 1,592	$ 1,812
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	13,000		13,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	401,000		401,000
Stock Repurchased and Retired During Period, Shares	0		0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 10.37		$ 10.37
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	395,000		395,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 11.10		$ 11.10
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price			$ 3.82
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period	76,000		87,000
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate			2.81%	1.96%
Allocated Share-based Compensation Expense	$ 725	849	$ 1,568	$ 1,792
Unrecognized compensation expense	$ 2,861		$ 2,861
Weighted-average period of recognition (in years)			3 years 1 month 19 days
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate			36.60%	35.53%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term			4 years 3 months 14 days	4 years 2 months 20 days
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate			0.00%	0.00%
Restricted stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	49,000		237,000
Unrecognized compensation expense	$ 4,232		$ 4,232
Weighted-average period of recognition (in years)			2 years 6 months 21 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	503,000		503,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	134,000		154,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 11.30		$ 11.13
Stock Issued During Period, Shares, Restricted Stock Award, Forfeited	15,000		19,000
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	0		0
ESPP Plan [Member] \| Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	$ 14	$ 3	$ 24	$ 20
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period	0	26,000	0	26,000

Stock-Based Compensation - Schedule of Stock Based Compensation Expense (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	634	1,207	805	960
Allocated Share-based Compensation Expense	$ 739	$ 852	$ 1,592	$ 1,812
Cost of product sales
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	11	72	82	154
Cost of service sales
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	0	1	0	1
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	149	170	319	359
Sales, marketing and support
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	166	221	347	489
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	$ 413	$ 388	$ 844	$ 809

Stock-Based Compensation - Schedule of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
AOCI Attributable to Parent [Roll Forward]
Beginning balance			$ 105,665
Net other comprehensive income (loss), June 30, 2017	$ (3,851)	$ 2,455	(1,384)	$ 3,083
Ending balance	102,431		102,431
Foreign Currency Translation
AOCI Attributable to Parent [Roll Forward]
Beginning balance	(8,803)	(16,050)	(11,247)	(16,651)
Other comprehensive income (loss) before reclassifications	(3,866)	2,440	(1,422)	3,041
Amounts reclassified from AOCI to Other income (expense), net	0	0	0	0
Net other comprehensive income (loss), June 30, 2017	(3,866)	2,440	(1,422)	3,041
Ending balance	(12,669)	(13,610)	(12,669)	(13,610)
Unrealized Gain (Loss) on Available for Sale Marketable Securities
AOCI Attributable to Parent [Roll Forward]
Beginning balance	0	0	(1)	0
Other comprehensive income (loss) before reclassifications	0	(3)	1	(3)
Amounts reclassified from AOCI to Other income (expense), net	0	0	0	0
Net other comprehensive income (loss), June 30, 2017	0	(3)	1	(3)
Ending balance	0	(3)	0	(3)
Unrealized Gain (Loss) on Available for Sale Marketable Securities
AOCI Attributable to Parent [Roll Forward]
Beginning balance	(47)	(131)	(69)	(158)
Other comprehensive income (loss) before reclassifications	3	(1)	10	4
Amounts reclassified from AOCI to Other income (expense), net	12	19	27	41
Net other comprehensive income (loss), June 30, 2017	15	18	37	45
Ending balance	(32)	(113)	(32)	(113)
Total Accumulated Other Comprehensive Loss
AOCI Attributable to Parent [Roll Forward]
Beginning balance	(8,850)	(16,181)	(11,317)	(16,809)
Other comprehensive income (loss) before reclassifications	(3,863)	2,436	(1,411)	3,042
Amounts reclassified from AOCI to Other income (expense), net	12	19	27	41
Net other comprehensive income (loss), June 30, 2017	(3,851)	2,455	(1,384)	3,083
Ending balance	$ (12,701)	$ (13,726)	$ (12,701)	$ (13,726)

Net Income (Loss) per Common Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Weighted Average Number of Shares Outstanding, Basic and Diluted		16,446	16,942	16,354
Weighted Average Number of Shares Outstanding, Basic	17,140	16,446	16,942	16,354
Schedule of reconciliation of basic and diluted weighted average common shares outstanding
Dilutive common shares issuable in connection with stock plans	0	0	0	0
Weighted average common shares outstanding - diluted	17,140	16,446	16,942	16,354

Net Income (Loss) per Common Share (Details Textual) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	634	1,207	805	960

Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Components of inventories
Raw materials	$ 13,387	$ 13,347
Work in process	2,812	2,137
Finished goods	6,713	7,248
Inventories, net	$ 22,912	$ 22,732

Property and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Property and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 104,165		$ 104,165		$ 94,620
Property, Plant and Equipment, Net	50,069		50,069		43,521
Depreciation	2,192	$ 1,614	4,145	$ 3,307
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(54,096)		(54,096)		(51,099)
Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	3,828		3,828		3,828
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	24,082		24,082		24,038
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	473		473		429
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	24,958		24,958		24,764
Hardware Revenue Generating Asset [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net	37,246		37,246		28,453
Office And Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	13,527		13,527		13,057
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 51		$ 51		$ 51

Property and Equipment (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Depreciation	$ 2,192	$ 1,614	$ 4,145	$ 3,307
Property, Plant and Equipment, Net	50,069		50,069		$ 43,521
Hardware Revenue Generating Asset [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net	$ 37,246		$ 37,246		$ 28,453

Product Warranty (Details) - USD ($) $ in Thousands	6 Months Ended
Product Warranty (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Product Warranties Disclosures [Abstract]
Product Warranty Accrual	$ 2,039		$ 2,074
Summary of product warranty activity
Beginning balance	2,074	$ 2,280
Charges to expense	1,156	500
Costs incurred	(1,191)	(373)
Ending balance	$ 2,039	$ 2,407

Product Warranty (Details Textual) - USD ($) $ in Thousands	6 Months Ended
Product Warranty (Details Textual) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Product Warranty (Textual) [Abstract]
Accrued product warranty costs	$ 2,039	$ 2,074
Minimum
Product Warranty (Textual) [Abstract]
Limited warranty period on product	1 year
Maximum
Product Warranty (Textual) [Abstract]
Limited warranty period on product	2 years

Debt (Details)					6 Months Ended		27 Months Ended
Debt (Details)	Feb. 28, 2018 USD ($)	Jul. 02, 2014 USD ($)	Jul. 01, 2014	Apr. 06, 2009 USD ($)	Jun. 30, 2018 USD ($) covenant	Jun. 30, 2017 USD ($)	Jul. 01, 2019 USD ($)	Apr. 01, 2019 USD ($)	Dec. 31, 2017 USD ($)	Apr. 01, 2010 Contract
Debt Instrument [Line Items]
Long-term Debt					$ 43,565,000				$ 47,054,000
Long-term debt, Repayment of Principal in connection with Amendment					6,000,000
Long-term Debt, Current Maturities					4,990,000				2,482,000
Long-term Debt, Excluding Current Maturities					38,575,000				44,572,000
Line of Credit Facility, Current Borrowing Capacity					$ 15,000,000
Number of Financial Covenants \| covenant					2
Proceeds from Sale of Treasury Stock	$ 4,500,000				$ 4,500,000	$ 0
Repayments of Long-term loan	$ 2,250,000				3,400,000	$ 8,200,000
Senior Credit Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Term			5 years
Line of Credit [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Long-term Debt					$ 40,875,000				44,275,000
Line of Credit [Member] \| Senior Credit Facility [Member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity		$ 80,000,000
Long-term Line of Credit		$ 30,000,000
Line of Credit Facility, Covenant Compliance, Maximum Consolidated Fixed Charge Coverage Ratio					1.25
Line of Credit Facility, Mandatory Prepayment Provision, Net Cash Proceeds from Dispositions Not Reinvested, Percentage		100.00%
Line of Credit Facility, Mandatory Prepayment Provision, Net Cash Proceeds from Stated Equity Issuance, Percentage		50.00%
Line of Credit Facility, Mandatory Prepayment Provision, Net Cash Proceeds from Receipts Greater than 250 Thousand Dollars, Non-ordinary Business, Percentage		100.00%
Proceeds from Lines of Credit		$ 0
Line of Credit [Member] \| Senior Credit Facility [Member] \| Line of Credit [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Covenant Compliance, Maximum Consolidated Fixed Charge Coverage Ratio					1.25
Line of Credit [Member] \| Senior Credit Facility [Member] \| Line of Credit [Member] \| Minimum [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			1.75%
Line of Credit [Member] \| Senior Credit Facility [Member] \| Line of Credit [Member] \| Maximum
Debt Instrument [Line Items]
Line of Credit Facility, Covenant Compliance, Maximum Consolidated Leverage Ratio					1.5
Line of Credit [Member] \| Senior Credit Facility [Member] \| Line of Credit [Member] \| Maximum \| Base Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate			2.25%
Line of Credit [Member] \| Senior Credit Facility [Member] \| Line of Credit [Member] \| Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Covenant Compliance, Maximum Consolidated Leverage Ratio					1.50
Line of Credit [Member] \| Senior Credit Facility [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity		15,000,000
Line of Credit [Member] \| Senior Credit Facility [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity		$ 65,000,000
Mortgages [Member]
Debt Instrument [Line Items]
Long-term Debt					$ 2,690,000				$ 2,779,000
Mortgages [Member] \| Mortgage Loan On Headquarters Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Term				10 years
Debt Instrument, Periodic Payment, Principal					$ 15,000
Number of Financial Covenants \| covenant					1
Debt Instrument, Face Amount				$ 4,000,000
Debt Instrument, Term If Balloon Not Considered				20 years
Mortgages [Member] \| Mortgage Loan On Headquarters Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate				2.00%
Mortgages [Member] \| Mortgage Loan On Headquarters Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt Covenant, Cash And Cash Equivalents Threshold					$ 25,000,000
Mortgages [Member] \| Mortgage Loan On Headquarters Facility [Member] \| Debt Instrument, Redemption, Period Two [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage					6.07%				6.07%	6.07%
Mortgages [Member] \| Mortgage Loan On Headquarters Facility [Member] \| Debt Instrument, Redemption, Period One [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage					5.91%				5.905%	5.91%
Scenario, Forecast [Member]
Debt Instrument [Line Items]
Debt Instrument, Periodic Payment, Principal							$ 575,000
Scenario, Forecast [Member] \| Mortgages [Member] \| Mortgage Loan On Headquarters Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid								$ 2,551,000
Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, Number of Instruments Held \| Contract										2

Segment Reporting (Details Textual)	3 Months Ended		6 Months Ended
Segment Reporting (Details Textual)	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Mobile Connectivity [Member] \| Mobile Comm Product Sales [Member]
Segment Reporting Information [Line Items]
Percent of Consolidated Net Sales	19.00%	22.00%	19.00%	23.00%
Mobile Connectivity [Member] \| VSAT Airtime Service Sales [Member]
Segment Reporting Information [Line Items]
Percent of Consolidated Net Sales	40.00%	41.00%	40.00%	40.00%
Mobile Connectivity [Member] \| Training and Content Sales [Member]
Segment Reporting Information [Line Items]
Percent of Consolidated Net Sales	18.00%	20.00%	18.00%	20.00%
Intertial Navigation [Member] \| FOG System Sales [Member]
Segment Reporting Information [Line Items]
Percent of Consolidated Net Sales	15.00%	12.00%	14.00%	11.00%
Non-US [Member]
Segment Reporting Information [Line Items]
Percent of consolidated long-lived tangible assets	10.00%		10.00%		10.00%
Percent of Consolidated Net Sales	60.00%	62.00%	59.00%	61.00%

Segment Reporting Net Sales and Operating Earnings (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Revenue, Net	$ 43,392	$ 40,449	$ 83,493	$ 80,660
Operating Income (Loss)	(1,187)	(1,368)	(4,367)	(5,838)
Net interest and other expense	173	(302)	(362)	(557)
(Loss) income before income tax expense	(1,014)	(1,670)	(4,729)	(6,395)
Mobile Connectivity and Intertial Navigation Combined [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	2,713	3,000	4,119	3,578
Other Segments [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	(3,900)	(4,368)	(8,486)	(9,416)
Operating Segments [Member] \| Mobile Connectivity [Member]
Segment Reporting Information [Line Items]
Revenue, Net	33,764	34,034	66,513	68,321
Operating Income (Loss)	1,149	2,638	2,221	3,260
Operating Segments [Member] \| Intertial Navigation [Member]
Segment Reporting Information [Line Items]
Revenue, Net	9,628	6,415	16,980	12,339
Operating Income (Loss)	$ 1,564	$ 362	$ 1,898	$ 318

Segment Reporting Deprecation and Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Depreciation	$ 2,192	$ 1,614	$ 4,145	$ 3,307
Amortization expense	1,046	1,102	2,143	2,170
Mobile Connectivity [Member]
Segment Reporting Information [Line Items]
Depreciation	1,810	1,394	3,370	2,872
Amortization expense	1,046	1,102	2,143	2,170
Intertial Navigation [Member]
Segment Reporting Information [Line Items]
Depreciation	254	199	506	395
Amortization expense	0	0	0	0
Other Segments [Member]
Segment Reporting Information [Line Items]
Depreciation	128	21	269	40
Amortization expense	$ 0	$ 0	$ 0	$ 0

Legal Matters Legal Matters (Details) $ in Thousands	Jun. 30, 2018 USD ($)
Minimum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	$ 100

Share Buyback Program (Details) shares in Thousands	6 Months Ended
Share Buyback Program (Details) shares in Thousands	Jun. 30, 2018 Program shares	Nov. 26, 2008 shares
Share Buyback Program (Textual) [Abstract]
Common stock available for repurchase \| shares	341	1,000
Number of other repurchase programs outstanding	0
Number of stock repurchase programs other expired	0

Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of assets and liabilities measured at fair value on recurring basis
Interest Rate Derivative Liabilities, at Fair Value Disclosure	$ 32	$ 69
Fair Value, Inputs, Level 1
Schedule of assets and liabilities measured at fair value on recurring basis
Interest Rate Derivative Liabilities, at Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2
Schedule of assets and liabilities measured at fair value on recurring basis
Interest Rate Derivative Liabilities, at Fair Value Disclosure	32	69
Fair Value, Inputs, Level 3
Schedule of assets and liabilities measured at fair value on recurring basis
Interest Rate Derivative Liabilities, at Fair Value Disclosure	0	0
Money market mutual funds [Member]
Schedule of assets and liabilities measured at fair value on recurring basis
Assets, Fair Value Disclosure	335	7,318
Money market mutual funds [Member] \| Fair Value, Inputs, Level 1
Schedule of assets and liabilities measured at fair value on recurring basis
Assets, Fair Value Disclosure	335	7,318
Money market mutual funds [Member] \| Fair Value, Inputs, Level 2
Schedule of assets and liabilities measured at fair value on recurring basis
Assets, Fair Value Disclosure	0	0
Money market mutual funds [Member] \| Fair Value, Inputs, Level 3
Schedule of assets and liabilities measured at fair value on recurring basis
Assets, Fair Value Disclosure	$ 0	0
Certificates of Deposit
Schedule of assets and liabilities measured at fair value on recurring basis
Assets, Fair Value Disclosure		1,001
Certificates of Deposit \| Fair Value, Inputs, Level 1
Schedule of assets and liabilities measured at fair value on recurring basis
Assets, Fair Value Disclosure		1,001
Certificates of Deposit \| Fair Value, Inputs, Level 2
Schedule of assets and liabilities measured at fair value on recurring basis
Assets, Fair Value Disclosure		0
Certificates of Deposit \| Fair Value, Inputs, Level 3
Schedule of assets and liabilities measured at fair value on recurring basis
Assets, Fair Value Disclosure		$ 0

Goodwill and Intagible Assets (Details) $ in Thousands	6 Months Ended
Goodwill and Intagible Assets (Details) $ in Thousands	Jun. 30, 2018 USD ($)
Goodwill [Roll Forward]
Balance at December 31, 2017	$ 33,872
Foreign currency translation adjustment	(635)
Balance at June 30, 2018	$ 33,237

Goodwill and Intagible Assets (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Goodwill [Line Items]
Goodwill	$ 33,237		$ 33,237		$ 33,872
Intangible Assets, Gross (Excluding Goodwill)	12,743		12,743		$ 15,120
Amortization expense	$ (1,046)	$ (1,102)	(2,143)	$ (2,170)
Finite-lived Intangible Assets Acquired			100
Finite-Lived Intangible Assets, Translation Adjustments			$ (234)

Goodwill and Intagible Assets (Details 3) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 12,743	$ 15,120
Finite-lived intangible assets, gross	35,542	35,776
Intangible assets, accumulated amortization	22,799	20,656
Finite-lived intangible assets, net	12,743	15,120
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	17,750	17,912
Intangible assets, accumulated amortization	9,371	8,347
Finite-lived intangible assets, net	8,379	9,565
Distribution rights
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	4,328	4,385
Intangible assets, accumulated amortization	1,595	1,450
Finite-lived intangible assets, net	2,733	2,935
Internally developed software
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	2,327	2,324
Intangible assets, accumulated amortization	2,327	2,206
Finite-lived intangible assets, net	0	118
Proprietary content
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	8,206	8,223
Intangible assets, accumulated amortization	6,697	5,908
Finite-lived intangible assets, net	$ 1,509	2,315
Intellectual Property [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Finite-lived intangible assets, gross	$ 2,284	2,284
Intangible assets, accumulated amortization	2,284	2,284
Finite-lived intangible assets, net	0	0
Off-Market Favorable Lease [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	647	648
Intangible assets, accumulated amortization	525	461
Finite-lived intangible assets, net	$ 122	$ 187
Headland Media Limited [Member] \| Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Headland Media Limited [Member] \| Distribution rights
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years
Headland Media Limited [Member] \| Internally developed software
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	3 years
Headland Media Limited [Member] \| Proprietary content
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	2 years
Videotel [Member] \| Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	8 years
Videotel [Member] \| Internally developed software
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	4 years
Videotel [Member] \| Proprietary content
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years
Videotel [Member] \| Off-Market Favorable Lease [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years

Goodwill and Intagible Assets (Details 4) - USD ($) $ in Thousands	Dec. 31, 2026	Jun. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Remainder of 2018		$ 1,940
2019		3,057
2020		2,244
2021		2,244
2022		1,472
Thereafter		1,786
Total future amortization expense		12,743
Intangible Assets, Gross (Excluding Goodwill)		12,743	$ 15,120
Q1 2017 Acquisition [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)		$ 133
Scenario, Forecast [Member] \| Q1 2017 Acquisition [Member]
Finite-Lived Intangible Assets [Line Items]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 114

Goodwill and Intagible Assets Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired			$ 100
Amortization of Intangible Assets	$ 1,046	$ 1,102	2,143	$ 2,170
General and administrative
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	656	735	1,354	1,448
Cost of service sales
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 390	$ 367	$ 789	$ 722

Goodwill and Intagible Assets Intangible Asset Remaining Useful Life (Details)	6 Months Ended
	Jun. 30, 2018
Finite-Lived Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Remaining Amortization Period	3 years 9 months 18 days
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Remaining Amortization Period	4 years 4 months 24 days
Distribution rights
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Remaining Amortization Period	9 years 9 months 18 days
Trade Secrets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Remaining Amortization Period	1 year
Intellectual Property [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Off-Market Favorable Lease [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Remaining Amortization Period	1 year
Q1 2017 Acquisition [Member] \| Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Headland Media Limited [Member] \| Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Headland Media Limited [Member] \| Distribution rights
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years

Business and Credit Concentrations (Details)	6 Months Ended	12 Months Ended
Business and Credit Concentrations (Details)	Jun. 30, 2018	Dec. 31, 2017
Concentration Risk [Line Items]
Concentration Risk, Additional Characteristic	0
Sales Revenue, Net [Member]
Concentration Risk [Line Items]
Concentration Risk, Customer	0
Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration Risk, Customer	0	0

Revenue from Contracts with Customers (ASC 606) Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 43,392	$ 83,493
Mobile Connectivity Product Sales [Member] \| Mobile Connectivity [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenues	6,731	13,401
Mobile Connectivity Product Sales [Member] \| Mobile Connectivity [Member] \| Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,372	2,622
Mobile Comm Services Sales [Member] \| Mobile Connectivity [Member]
Disaggregation of Revenue [Line Items]
Revenues	25,661	50,490
Inertial Navigation Product Sales [Member] \| Intertial Navigation [Member]
Disaggregation of Revenue [Line Items]
Revenues	8,059	14,131
Inertial Navigation Service Sales [Member] \| Intertial Navigation [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 1,569	$ 2,849

Revenue from Contracts with Customers (ASC 606) Financial Statement Impact of Adopting ASC 606 (Details) - USD ($)	Jun. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Financial Statement Impact of Adopting ASC 606 [Line Items]
Cash, Cash Equivalents, and Short-term Investments	$ 34,872,000
Accounts receivable, net of allowance for doubtful accounts of $2,489 and $2,852 as of June 30, 2018 and December 31, 2017, respectively	29,837,000		$ 28,316,000
Inventories	22,912,000		22,732,000
Current contract assets	3,419,000		0
Prepaid Expense and Other Assets	3,339,000		3,816,000
Long-Lived Assets	96,049,000
Other Assets, Noncurrent	6,735,000		5,927,000
Non-current contract assets	6,266,000		0
Non-current deferred income tax asset	198,000		20,000
Assets	203,627,000		196,239,000
Accounts Payable and Other Accrued Liabilities, Current	38,403,000
Deferred Revenue, Current	0		6,919,000
Contract liabilities	11,051,000		0
Long-term contract liabilities	8,374,000		0
Other Liabilities, Noncurrent	2,213,000		19,000
Long-term Debt, Excluding Current Maturities	38,575,000		44,572,000
Liabilities	101,196,000		90,574,000
Retained Earnings (Accumulated Deficit)	(12,401,000)		(4,417,000)
Common stock, additional paid-in capital, and accumulated other comprehensive loss	114,832,000
Stockholders' Equity Attributable to Parent	102,431,000		105,665,000
Liabilities and Equity	203,627,000		196,239,000
Accounting Standards Update 2014-09 [Member] \| Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Financial Statement Impact of Adopting ASC 606 [Line Items]
Cash, Cash Equivalents, and Short-term Investments	34,872,000		42,915,000
Accounts receivable, net of allowance for doubtful accounts of $2,489 and $2,852 as of June 30, 2018 and December 31, 2017, respectively	29,837,000		28,316,000
Inventories	22,912,000		22,732,000
Current contract assets	0		0
Prepaid Expense and Other Assets	3,339,000		3,816,000
Long-Lived Assets	96,049,000		92,513,000
Other Assets, Noncurrent	6,735,000		5,927,000
Non-current contract assets	0		0
Non-current deferred income tax asset	21,000		20,000
Assets	193,765,000		196,239,000
Accounts Payable and Other Accrued Liabilities, Current	38,403,000		36,430,000
Deferred Revenue, Current	6,716,000		6,919,000
Contract liabilities	0		0
Long-term contract liabilities	0		0
Other Liabilities, Noncurrent			2,653,000
Long-term Debt, Excluding Current Maturities	38,575,000		44,572,000
Liabilities	88,487,000		90,574,000
Retained Earnings (Accumulated Deficit)	(9,554,000)		(4,417,000)
Common stock, additional paid-in capital, and accumulated other comprehensive loss	114,832,000		110,082,000
Stockholders' Equity Attributable to Parent	105,278,000		105,665,000
Liabilities and Equity	193,765,000		196,239,000
Accounting Standards Update 2014-09 [Member] \| Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Financial Statement Impact of Adopting ASC 606 [Line Items]
Cash, Cash Equivalents, and Short-term Investments		$ 42,915,000	0
Accounts receivable, net of allowance for doubtful accounts of $2,489 and $2,852 as of June 30, 2018 and December 31, 2017, respectively		28,316,000	0
Inventories		22,732,000	0
Current contract assets		3,205,000	3,205,000
Prepaid Expense and Other Assets		3,816,000	0
Long-Lived Assets		92,513,000	0
Other Assets, Noncurrent		5,927,000	0
Non-current contract assets		5,963,000	5,963,000
Non-current deferred income tax asset		222,000	202,000
Assets	9,862,000	205,609,000	9,370,000
Accounts Payable and Other Accrued Liabilities, Current		36,430,000	0
Deferred Revenue, Current		0	(6,919,000)
Contract liabilities		11,039,000	11,039,000
Long-term contract liabilities		7,998,000	7,998,000
Other Liabilities, Noncurrent		2,653,000	0
Long-term Debt, Excluding Current Maturities		44,572,000	0
Liabilities	$ 12,709,000	102,692,000	12,118,000
Retained Earnings (Accumulated Deficit)		(7,165,000)	(2,748,000)
Common stock, additional paid-in capital, and accumulated other comprehensive loss		110,082,000	0
Stockholders' Equity Attributable to Parent		102,917,000	(2,748,000)
Liabilities and Equity		$ 205,609,000	9,370,000
Deferred Revenue			12,118,000
Contract with Customer, Asset, Net			9,370,000
Sales Commission [Member] \| Accounting Standards Update 2014-09 [Member] \| Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Financial Statement Impact of Adopting ASC 606 [Line Items]
Retained Earnings (Accumulated Deficit)			191,000
Deferred Tax Assets, Net			$ 203,000

Revenue from Contracts with Customers (ASC 606) Impact of New Revenue Guidance on Financial Statement Line Items (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
Financial Statement Impact of Adopting ASC 606 [Line Items]
Sales Revenue, Goods, Net	$ 16,162,000	$ 14,323,000	$ 30,154,000	$ 29,186,000
Sales Revenue, Services, Net	27,230,000	26,126,000	53,339,000	51,474,000
Revenue, Net	43,392,000	40,449,000	83,493,000	80,660,000
Cost of Goods Sold	10,094,000	9,295,000	19,017,000	19,834,000
Cost of Services	15,498,000	13,094,000	29,314,000	26,362,000
Research and Development Expense	3,565,000	3,761,000	7,499,000	7,708,000
Selling and Marketing Expense	8,494,000	8,124,000	17,435,000	16,864,000
General and Administrative Expense	6,928,000	7,543,000	14,595,000	15,730,000
Costs and Expenses	44,579,000	41,817,000	87,860,000	86,498,000
Operating Income (Loss)	(1,187,000)	(1,368,000)	(4,367,000)	(5,838,000)
Net interest and other expense	173,000	(302,000)	(362,000)	(557,000)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	(1,014,000)	(1,670,000)	(4,729,000)	(6,395,000)
Income tax expense	329,000	356,000	507,000	516,000
Cash, Cash Equivalents, and Short-term Investments	34,872,000		34,872,000
Accounts receivable, net of allowance for doubtful accounts of $2,489 and $2,852 as of June 30, 2018 and December 31, 2017, respectively	29,837,000		29,837,000			$ 28,316,000
Inventories	22,912,000		22,912,000			22,732,000
Current contract assets	3,419,000		3,419,000			0
Prepaid Expense and Other Assets	3,339,000		3,339,000			3,816,000
Long-Lived Assets	96,049,000		96,049,000
Other Assets, Noncurrent	6,735,000		6,735,000			5,927,000
Non-current contract assets	6,266,000		6,266,000			0
Non-current deferred income tax asset	198,000		198,000			20,000
Assets	203,627,000		203,627,000			196,239,000
Accounts Payable and Other Accrued Liabilities, Current	38,403,000		38,403,000
Deferred Revenue, Current	0		0			6,919,000
Contract liabilities	11,051,000		11,051,000			0
Long-term contract liabilities	8,374,000		8,374,000			0
Deferred Income Taxes and Other Liabilities, Noncurrent	4,793,000		4,793,000
Long-term Debt, Excluding Current Maturities	38,575,000		38,575,000			44,572,000
Liabilities	101,196,000		$ 101,196,000			90,574,000
Subscriber Relationship, Estimated Life			5 years
Revenues	43,392,000		$ 83,493,000
Retained Earnings (Accumulated Deficit)	(12,401,000)		(12,401,000)			(4,417,000)
Common stock, additional paid-in capital, and accumulated other comprehensive loss	114,832,000		114,832,000
Stockholders' Equity Attributable to Parent	102,431,000		102,431,000			105,665,000
Liabilities and Equity	203,627,000		203,627,000			196,239,000
Net Income (Loss) Attributable to Parent	$ (1,343,000)	$ (2,026,000)	$ (5,236,000)	$ (6,911,000)
Earnings Per Share, Basic and Diluted	$ (0.08)	$ (0.12)	$ (0.31)	$ (0.42)
Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities			$ 7,821,000
Increase (Decrease) in Accounts Receivable and Inventories			(1,856,000)
Increase (Decrease) in Prepaid Expense and Other Assets			(1,022,000)
Increase (Decrease) in Deferred Revenue			527,000
Increase (Decrease) in Accounts Payable and Other Operating Liabilities			(1,432,000)
Net Cash Provided by (Used in) Operating Activities			(1,198,000)	$ 6,772,000
Deferred Revenue, Revenue Recognized	$ 1,193,000		2,408,000
Accounting Standards Update 2014-09 [Member] \| Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Financial Statement Impact of Adopting ASC 606 [Line Items]
Cash, Cash Equivalents, and Short-term Investments					$ 42,915,000	0
Accounts receivable, net of allowance for doubtful accounts of $2,489 and $2,852 as of June 30, 2018 and December 31, 2017, respectively					28,316,000	0
Inventories					22,732,000	0
Current contract assets					3,205,000	3,205,000
Prepaid Expense and Other Assets					3,816,000	0
Long-Lived Assets					92,513,000	0
Other Assets, Noncurrent					5,927,000	0
Non-current contract assets					5,963,000	5,963,000
Non-current deferred income tax asset					222,000	202,000
Assets	9,862,000		9,862,000		205,609,000	9,370,000
Accounts Payable and Other Accrued Liabilities, Current					36,430,000	0
Deferred Revenue, Current					0	(6,919,000)
Contract liabilities					11,039,000	11,039,000
Long-term contract liabilities					7,998,000	7,998,000
Long-term Debt, Excluding Current Maturities					44,572,000	0
Liabilities	12,709,000		12,709,000		102,692,000	12,118,000
Revenues	182,000		590,000
Cost of Revenue	67,000		476,000
Retained Earnings (Accumulated Deficit)					(7,165,000)	(2,748,000)
Common stock, additional paid-in capital, and accumulated other comprehensive loss					110,082,000	0
Stockholders' Equity Attributable to Parent					102,917,000	(2,748,000)
Liabilities and Equity					$ 205,609,000	9,370,000
Net Income (Loss) Attributable to Parent	$ 89,000		$ 98,000
Earnings Per Share, Basic and Diluted	$ (0.01)		$ (0.01)
Accounting Standards Update 2014-09 [Member] \| Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Financial Statement Impact of Adopting ASC 606 [Line Items]
Sales Revenue, Goods, Net	$ 16,344,000		$ 30,744,000
Sales Revenue, Services, Net	27,230,000		53,339,000
Revenue, Net	43,574,000		84,083,000
Cost of Goods Sold	10,161,000		19,493,000
Cost of Services	15,498,000		29,314,000
Research and Development Expense	3,565,000		7,499,000
Selling and Marketing Expense	8,536,000		17,476,000
General and Administrative Expense	6,928,000		14,595,000
Costs and Expenses	44,688,000		88,377,000
Operating Income (Loss)	(1,114,000)		(4,294,000)
Net interest and other expense	173,000		(362,000)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	(941,000)		(4,656,000)
Income tax expense	313,000		482,000
Cash, Cash Equivalents, and Short-term Investments	34,872,000		34,872,000			42,915,000
Accounts receivable, net of allowance for doubtful accounts of $2,489 and $2,852 as of June 30, 2018 and December 31, 2017, respectively	29,837,000		29,837,000			28,316,000
Inventories	22,912,000		22,912,000			22,732,000
Current contract assets	0		0			0
Prepaid Expense and Other Assets	3,339,000		3,339,000			3,816,000
Long-Lived Assets	96,049,000		96,049,000			92,513,000
Other Assets, Noncurrent	6,735,000		6,735,000			5,927,000
Non-current contract assets	0		0			0
Non-current deferred income tax asset	21,000		21,000			20,000
Assets	193,765,000		193,765,000			196,239,000
Accounts Payable and Other Accrued Liabilities, Current	38,403,000		38,403,000			36,430,000
Deferred Revenue, Current	6,716,000		6,716,000			6,919,000
Contract liabilities	0		0			0
Long-term contract liabilities	0		0			0
Deferred Income Taxes and Other Liabilities, Noncurrent	4,793,000		4,793,000
Long-term Debt, Excluding Current Maturities	38,575,000		38,575,000			44,572,000
Liabilities	88,487,000		88,487,000			90,574,000
Retained Earnings (Accumulated Deficit)	(9,554,000)		(9,554,000)			(4,417,000)
Common stock, additional paid-in capital, and accumulated other comprehensive loss	114,832,000		114,832,000			110,082,000
Stockholders' Equity Attributable to Parent	105,278,000		105,278,000			105,665,000
Liabilities and Equity	193,765,000		193,765,000			$ 196,239,000
Net Income (Loss) Attributable to Parent	$ (1,254,000)		$ (5,138,000)
Earnings Per Share, Basic and Diluted	$ (0.07)		$ (0.30)
Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities			$ 7,796,000
Increase (Decrease) in Accounts Receivable and Inventories			(1,856,000)
Increase (Decrease) in Prepaid Expense and Other Assets			(505,000)
Increase (Decrease) in Deferred Revenue			(63,000)
Increase (Decrease) in Accounts Payable and Other Operating Liabilities			(1,432,000)
Net Cash Provided by (Used in) Operating Activities			$ (1,198,000)

Derivative Instruments and Hedging Activities (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017	Apr. 01, 2010
Debt Instrument, Redemption, Period One [Member] \| Mortgage Loan On Headquarters Facility [Member] \| Mortgages [Member]
Schedule of interest rate derivatives designated as cash flow hedges of interest rate risk
Strike rate	5.91%	5.905%	5.91%
Debt Instrument, Redemption, Period Two [Member] \| Mortgage Loan On Headquarters Facility [Member] \| Mortgages [Member]
Schedule of interest rate derivatives designated as cash flow hedges of interest rate risk
Strike rate	6.07%	6.07%	6.07%
Interest Rate Swap [Member] \| First half of mortgage [Member]
Schedule of interest rate derivatives designated as cash flow hedges of interest rate risk
Notional	$ 1,345	$ 1,389
Asset (Liability)	$ (15)	$ (33)
Effective Date	Apr. 01, 2010	Apr. 01, 2010
Maturity Date	Apr. 01, 2019	Apr. 01, 2019
Derivative, Type of Interest Rate Paid on Swap	1-month LIBOR	1-month LIBOR
Strike rate			5.91%
Interest Rate Swap [Member] \| Second half of mortgage [Member]
Schedule of interest rate derivatives designated as cash flow hedges of interest rate risk
Notional	$ 1,345	$ 1,389
Asset (Liability)	$ (17)	$ (36)
Effective Date	Apr. 01, 2010	Apr. 01, 2010
Maturity Date	Apr. 01, 2019	Apr. 01, 2019
Derivative, Type of Interest Rate Paid on Swap	1-month LIBOR	1-month LIBOR
Strike rate			6.07%

Derivative Instruments and Hedging Activities (Details Textual) - Interest Rate Swap [Member]	Apr. 01, 2010 Contract
Derivative Instruments and Hedging Activities (Textual) [Abstract]
Number of Interest rate swap agreements	2
First half of mortgage [Member]
Derivative Instruments and Hedging Activities (Textual) [Abstract]
Strike rate	5.91%
Second half of mortgage [Member]
Derivative Instruments and Hedging Activities (Textual) [Abstract]
Strike rate	6.07%

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	12 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Dec. 31, 2017
Income Taxes [Textual] [Abstract]
Effective Income Tax Rate Reconciliation, Percent	(32.40%)	(21.30%)	(10.70%)	(8.10%)
Reserve for Uncertain Tax Positions	$ 1,444		$ 1,444	$ 1,570
Income Tax Examination, Penalties and Interest Expense	20		43
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	162
Decrease in Unrecognized Tax Benefits is Reasonably Possible	$ 208		$ 208

Capital Lease (Details) $ in Thousands	3 Months Ended	6 Months Ended
Capital Lease (Details) $ in Thousands	Jun. 30, 2018 USD ($) hub	Jun. 30, 2018 USD ($) hub
Lessee, Lease, Description [Line Items]
Leased assets, Useful Life		7 years
Capital Leases, Income Statement, Amortization Expense	$ 110	$ 188
Satellite hubs for HTS network [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract		5 years
Number of satellite hubs leased \| hub	3	3
Hardware Revenue Generating Asset [Member]
Lessee, Lease, Description [Line Items]
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Other Property, Plant, and Equipment, Gross	$ 3,068	$ 3,068
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Property, Plant, and Equipment Other, Accumulated Depreciation	$ 188	$ 188

Future Minimum Capital Lease Payments (Details) $ in Thousands	Jun. 30, 2018 USD ($)
Lessee, Capital Lease, Interest Rate	(1.53%)
Capital Leases, Future Minimum Payments, Remainder of Fiscal Year	$ 312
Capital Leases, Future Minimum Payments Due, Next Twelve Months	624
Capital Leases, Future Minimum Payments Due in Two Years	624
Capital Leases, Future Minimum Payments Due in Three Years	624
Capital Leases, Future Minimum Payments Due in Four Years	624
Capital Leases, Future Minimum Payments Due in Five Years	45
Capital Leases, Future Minimum Payments Due	2,853
Capital Leases, Future Minimum Payments, Interest Included in Payments	(42)
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments	2,811
Accrued Liabilities [Member]
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments	608
Other Noncurrent Liabilities [Member]
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments	$ 2,203