KVH Industries (KVHI) 10-Q 31 Oct 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 22, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	KVH INDUSTRIES INC \DE\
Entity Central Index Key	1,007,587
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Amendment Flag	false
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--09-30
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		17,737,431

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 32,900	$ 34,596
Marketable securities	336	8,319
Accounts receivable, net of allowance for doubtful accounts of $2,786 and $2,852 as of September 30, 2018 and December 31, 2017, respectively	28,971	28,316
Inventories	24,676	22,732
Current contract assets	3,460	0
Prepaid expenses and other current assets	3,741	3,816
Total current assets	94,084	97,779
Property and equipment, less accumulated depreciation of $55,736 and $51,099 as of September 30, 2018 and December 31, 2017, respectively	52,375	43,521
Intangible assets, less accumulated amortization of $23,757 and $20,656 as of September 30, 2018 and December 31, 2017, respectively	11,637	15,120
Goodwill	32,848	33,872
Other non-current assets	6,701	5,927
Non-current contract assets	6,626	0
Non-current deferred income tax asset	201	20
Total assets	204,472	196,239
Current liabilities:
Accounts payable	14,957	15,736
Accrued compensation and employee-related expenses	5,598	5,358
Accrued other	11,748	9,210
Accrued product warranty costs	2,032	2,074
Deferred revenue	0	6,919
Current portion of long-term debt	22,691	2,482
Contract liabilities	10,770	0
Liability for uncertain tax positions	1,316	1,570
Total current liabilities	69,112	43,349
Other long-term liabilities	2,060	19
Long-term contract liabilities	8,771	0
Non-current deferred income tax liability	2,547	2,634
Long-term debt, excluding current portion	20,252	44,572
Total liabilities	102,742	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; 19,021,853 and 18,787,816 shares issued at September 30, 2018 and December 31, 2017, respectively; and 17,739,431 and 17,128,825 shares outstanding at September 30, 2018 and December 31, 2017, respectively	190	188
Additional paid-in capital	138,731	134,361
Accumulated deficit	(13,575)	(4,417)
Accumulated other comprehensive loss	(13,452)	(11,317)
Stockholders Equity Before Treasury Stock Adjustment	111,894	118,815
Less: treasury stock at cost, common stock, 1,282,422 and 1,658,991 shares as of September 30, 2018 and December 31, 2017, respectively	(10,164)	(13,150)
Total stockholders’ equity	101,730	105,665
Total liabilities and stockholders’ equity	$ 204,472	$ 196,239

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ (2,786)	$ (2,852)
Property and equipment, accumulated depreciation	(55,736)	(51,099)
Intangible assets, accumulated amortization	$ (23,757)	$ (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	19,021,853	18,787,816
Common stock, shares outstanding	17,739,431	17,128,825
Treasury stock, shares outstanding	1,282,422	1,658,991

Consolidated Statements of Oper

Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Sales:
Product	$ 16,367	$ 14,169	$ 46,521	$ 43,355
Service	27,150	26,281	80,489	77,755
Net sales	43,517	40,450	127,010	121,110
Costs and expenses:
Costs of product sales	9,767	9,578	28,784	29,412
Costs of service sales	15,376	13,374	44,690	39,736
Research and development	3,789	3,990	11,288	11,698
Sales, marketing and support	8,421	8,234	25,856	25,098
General and administrative	7,084	7,075	21,679	22,805
Total costs and expenses	44,437	42,251	132,297	128,749
Loss from operations	(920)	(1,801)	(5,287)	(7,639)
Interest income	161	166	464	491
Interest expense	453	379	1,290	1,081
Other income (expense), net	199	(141)	371	(321)
Loss before income tax expense	(1,013)	(2,155)	(5,742)	(8,550)
Income tax expense	161	283	668	799
Net loss	$ (1,174)	$ (2,438)	$ (6,410)	$ (9,349)
Net loss per common share
Earnings Per Share, Basic and Diluted	$ (0.07)	$ (0.15)	$ (0.38)	$ (0.57)
Weighted average number of common shares outstanding:
Weighted Average Number of Shares Outstanding, Basic and Diluted		16,469	17,025	16,393
Diluted	17,188	16,469	17,025	16,393

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (1,174)	$ (2,438)	$ (6,410)	$ (9,349)
Other comprehensive (loss) income, net of tax:
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	0	2	1	(1)
Foreign currency translation adjustment	(763)	1,956	(2,185)	4,997
Unrealized gain on derivative instruments, net	12	19	49	64
Other comprehensive (loss) income, net of tax(1)	(751)	1,977	(2,135)	5,060
Total comprehensive loss	$ (1,925)	$ (461)	$ (8,545)	$ (4,289)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Changes in Accrued Liabilities Related to Fixed Asset Additions	$ 965	$ 402
Deferred purchase price consideration related to asset acquisition included in accrued expenses	0	50
Cash flows from operating activities:
Net income (loss)	(6,410)	(9,349)
Adjustments to reconcile net loss to net cash provided by operating activities:
Provision for doubtful accounts	444	637
Depreciation and amortization	9,481	8,222
Deferred income taxes	22	0
Gain (Loss) on Disposition of Property Plant Equipment	2	21
Compensation expense related to stock-based awards and employee stock purchase plan	2,452	2,621
Unrealized currency translation gain	(290)	(205)
Changes in operating assets and liabilities:
Accounts receivable	(1,217)	1,975
Inventories	(1,907)	(896)
Prepaid expenses, other current assets, and current contract assets	(232)	(200)
Other non-current assets and non-current contract assets	(1,647)	(685)
Accounts payable	(992)	2,910
Deferred revenue, contract liabilities, and long-term contract liabilities	701	2,167
Accrued compensation, product warranty, and other	1,364	2,478
Other long-term liabilities	(10)	(305)
Net cash provided by operating activities	1,761	9,391
Cash flows from investing activities:
Capital expenditures	(11,463)	(10,234)
Cash paid for acquisition of intangible asset	(22)	(55)
Purchases of marketable securities	(2,036)	(9,351)
Maturities and sales of marketable securities	10,019	26,766
Net cash (used in) provided by investing activities	(3,502)	7,126
Cash flows from financing activities:
Repayments of long-term debt	(136)	(1,606)
Payments of employee restricted stock withholdings	0	392
Proceeds From Stock Options Exercised and Employee Stock Purchase Plan	477	1,332
Repayments of Long-term loan	3,975	8,775
Proceeds from Sale of Treasury Stock	4,500	0
Repayments of Long-term Capital Lease Obligations	(410)	0
Net cash provided by (used in) financing activities	456	(9,441)
Effect of exchange rate changes on cash and cash equivalents	(411)	1,877
Net (decrease) increase in cash and cash equivalents	(1,696)	8,953
Cash and cash equivalents at beginning of period	34,596	26,422
Cash and cash equivalents at end of period	$ 32,900	$ 35,375

Description of Business

Description of Business	9 Months Ended
	Sep. 30, 2018
Description of Business [Abstract]
Description of Business	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

Significant Accounting Policies	9 Months Ended
	Sep. 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 nine months ended September 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 nine months ended September 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 P

Recently Announced Accounting Pronouncements	9 Months Ended
	Sep. 30, 2018
Significant Accounting Policies [Abstract]
New Accounting Pronouncements, Policy [Text Block]	ASC Update No. 2016-02, No. 2018-10 and No. 2018-11 In February 2016, the Financial Accounting Standards Board, or 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. In July 2018, the FASB issued Update No. 2018-10, Codification Improvements to Topic 842, Leases. Update No. 2018-10 made corrections to and further clarified Topic 842. In July 2018, the FASB issued Update No. 2018-11, Leases-Targeted Improvements (Topic 842). Update No. 2018-11 allows companies to use the effective date of the new lease standard as the date of initial application on transition and not to apply the new lease standard in the comparative prior periods included in their financial statements in the year of adoption. The new guidance also gives entities the option not to separate non-lease components from the associated lease components when certain criteria are met. The Company will adopt Topic 842 effective January 1, 2019. The Company established an implementation team to assist with its assessment of the impact of the lease guidance on its operations, consolidated financial statements and related disclosures. To date, this assessment has included (1) identifying the population of lease agreements and currently assessing the impact of other arrangements for embedded leases, (2) performing detailed analyses of the contracts to assess the impact of the noted differences in recognition and measurement that may result from adopting this new standard, and (3) evaluating and designing the necessary changes to its business processes, systems and controls to support recognition and disclosures under the new standard. Based on its current 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. We do not expect a material impact on our consolidated statements of operations or statement of cash flows. 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. ASC Update No. 2018-13 In August 2018, the FASB issued ASC Update No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement. The update is effective for annual periods beginning on or after December 15, 2019. Early adoption is permitted upon issuance of this update. The purpose of Update No. 2018-13 is to modify and eliminate some of the disclosure requirements on fair value measurements found in Topic 820, Fair Value Measurement, for both public and nonpublic entities. Through the inclusion of this update, FASB aims to facilitate a clear communication of the information required by GAAP that is most important to users of each entity's financial statements, thus helping to improve the effectiveness of disclosures in the notes to financial statements. Update No. 2018-13 is not expected to have a material impact on the Company's financial position or results of operations. ASC Update No. 2018-15 In August 2018, the FASB issued ASC Update No. 2018-15, Intangibles—Goodwill and Other—Internal-Use Software (Topic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. The update is effective for annual periods beginning on or after December 15, 2019. Early adoption of the amendments in this update is permitted, including adoption in any interim period, for all entities. The purpose of Update No. 2018-15 is to provide a new guideline to the accounting of a customer of a cloud computing arrangement hosted by a vendor when the customer incurs costs associated with the implementation, set-up, and other upfront costs. Specifically, customers will follow the same criteria found in an arrangement with a software license when they capitalize the implementation costs. The new guidance also affects the classification of the capitalized implementation costs and related amortization expense found in a company's balance sheet, income statement, and cash flow statement, and the update also requires additional quantitative and qualitative disclosures. Update No. 2018-15 is not expected to have a material impact on the Company's financial position or results of operations. 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 Marketabl

Marketable Securities Marketable Securities	9 Months Ended
	Sep. 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 September 30, 2018 and December 31, 2017 consisted of the following: September 30, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Money market mutual funds $ 336 $ — $ — $ 336 Total marketable securities designated as available-for-sale $ 336 $ — $ — $ 336 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 September 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. September 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 $2 and $25 during the three months ended September 30, 2018 and 2017 ,

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 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 $ 849 and $ 785 for the three months ended September 30, 2018 and 2017 , respectively, and $2,417 and $2,577 for the nine months ended September 30, 2018 and 2017 , respectively. As of September 30, 2018 , there was $2,621 of total unrecognized compensation expense related to stock options, which is expected to be recognized over a weighted-average period of 3.00 years. As of September 30, 2018 , there was $4,192 of total unrecognized compensation expense related to restricted stock awards, which is expected to be recognized over a weighted-average period of 2.26 years. Stock Options During the three months ended September 30, 2018 , 22 stock options were exercised for common stock. Additionally, during the three months ended September 30, 2018 , no stock options were granted and 65 stock options expired, were canceled or were forfeited. During the nine months ended September 30, 2018 , 35 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 nine months ended September 30, 2018 , 401 stock options were granted with a weighted average grant date fair value of $3.82 per share and 152 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 nine months ended September 30, 2018 and 2017 were as follows: Nine Months Ended September 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 September 30, 2018 , there were 1,281 options outstanding with a weighted average exercise price of $10.27 per share and 343 options exercisable with a weighted average exercise price of $10.89 per share. Restricted Stock During the three months ended September 30, 2018 , 45 shares of restricted stock were granted with a weighted average grant date fair value of $12.65 per share and no shares of restricted stock were forfeited. Additionally, during the three months ended September 30, 2018 , 10 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 nine months ended September 30, 2018 , 199 shares of restricted stock were granted with a weighted average grant date fair value of $11.47 per share and 19 shares of restricted stock were forfeited. Additionally, during the nine months ended September 30, 2018 , 247 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. As of September 30, 2018 , there were 538 shares of restricted stock outstanding still subject to service-based vesting conditions. As of September 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 nine months ended September 30, 2018 , 17 shares were issued under the ESPP plan. During the three and nine months ended September 30, 2017 , 0 and 26 shares were issued under the ESPP plan, respectively. The Company recorded compensation charges related to the ESPP of $11 and $24 for the three months ended September 30, 2018 and 2017 , respectively, and $35 and $44 for the nine months ended September 30, 2018 and 2017 , respectively. (c) Stock-Based Compensation Expense 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 nine months ended September 30, 2018 and 2017 : Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Cost of product sales $ 40 $ 68 $ 122 $ 222 Cost of service sales — — — 1 Research and development 177 155 496 514 Sales, marketing and support 138 190 485 679 General and administrative 505 396 1,349 1,205 $ 860 $ 809 $ 2,452 $ 2,621 (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 September 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, June 30, 2018 $ (12,669 ) $ — $ (32 ) $ (12,701 ) Other comprehensive loss before reclassifications (763 ) — — (763 ) Amounts reclassified from AOCI to Other income, net — — 12 12 Net other comprehensive (loss) income, September 30, 2018 (763 ) — 12 (751 ) Balance, September 30, 2018 $ (13,432 ) $ — $ (20 ) $ (13,452 ) Foreign Currency Translation Unrealized Gain (Loss) on Available for Sale Marketable Securities Interest Rate Swaps Total Accumulated Other Comprehensive Loss Balance, June 30, 2017 $ (13,610 ) $ (3 ) $ (113 ) $ (13,726 ) Other comprehensive income before reclassifications 1,956 2 1 1,959 Amounts reclassified from AOCI to Other income, net — — 18 18 Net other comprehensive income, September 30, 2017 1,956 2 19 1,977 Balance, September 30, 2017 $ (11,654 ) $ (1 ) $ (94 ) $ (11,749 ) The balances for the nine months ended September 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 (2,185 ) 1 11 (2,173 ) Amounts reclassified from AOCI to Other income, net — — 38 38 Net other comprehensive (loss) income, September 30, 2018 (2,185 ) 1 49 (2,135 ) Balance, September 30, 2018 $ (13,432 ) $ — $ (20 ) $ (13,452 ) 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 4,997 (1 ) 5 5,001 Amounts reclassified from AOCI to Other income, net — — 59 59 Net other comprehensive income (loss), September 30, 2017 4,997 (1 ) 64 5,060 Balance, September 30, 2017 $ (11,654 ) $ (1 ) $ (94 ) $ (11,749 ) For additional information, see Note 4, "Marketable Securities," and Note 17, "Derivative Instruments and Hedging Activities."

Net Income (Loss) per Common Sh

Net Income (Loss) per Common Share	9 Months Ended
	Sep. 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 nine months ended September 30, 2018 , since there was a net loss, the Company excluded all 932 and 739 , 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 nine months ended September 30, 2017 , since there was a net loss, the Company excluded all 597 and 995 , 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 Nine Months Ended September 30, September 30, 2018 2017 2018 2017 Weighted average common shares outstanding—basic 17,188 16,469 17,025 16,393 Dilutive common shares issuable in connection with stock plans — — — — Weighted average common shares outstanding—diluted 17,188 16,469 17,025 16,393

Inventories

Inventories	9 Months Ended
	Sep. 30, 2018
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories are stated at the lower of cost and net realizable value using the first-in first-out costing method. Inventories as of September 30, 2018 and December 31, 2017 include the costs of material, labor, and factory overhead. Components of inventories consist of the following: September 30, December 31, Raw materials $ 14,667 $ 13,347 Work in process 3,172 2,137 Finished goods 6,837 7,248 $ 24,676 $ 22,732

Product Warranty

Product Warranty	9 Months Ended
	Sep. 30, 2018
Product Warranties Disclosures [Abstract]
Product Warranty	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 September 30, 2018 and December 31, 2017 , the Company had accrued product warranty costs of $2,032 and $2,074 , respectively. The following table summarizes product warranty activity during 2018 and 2017 : Nine Months Ended September 30, 2018 2017 Beginning balance $ 2,074 $ 2,280 Charges to expense 1,592 845 Costs incurred (1,634 ) (810 ) Ending balance $ 2,032 $ 2,315

Debt

Debt	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	Debt Long-term debt consisted of the following: September 30, December 31, 2014 term note $ 40,300 $ 44,275 Mortgage loan 2,643 2,779 Total 42,943 47,054 Less amounts classified as current 22,691 2,482 Long-term debt, excluding current portion $ 20,252 $ 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 2014 Credit Agreement) with Bank of America, N.A., as Administrative Agent, and the lenders named from time to time as parties thereto (the 2014 Lenders), for an aggregate amount of up to $80,000 , including a revolving credit facility (the 2014 Revolver) of up to $15,000 and a term loan (2014 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 2014 Revolving Credit Note) to evidence the 2014 Revolver, (iii) term notes (together, the 2014 Term Note, and together with the 2014 Revolving Credit Note, the 2014 Notes) to evidence the 2014 Term Loan, (iv) a Security Agreement required by the 2014 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 2014 Credit Agreement and the 2014 Notes, and (v) Pledge Agreements required by the 2014 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 2014 Credit Agreement and the 2014 Notes. Borrowings under the 2014 Revolver were 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 2014 Credit Agreement. As of September 30, 2018 , there were no borrowings outstanding under the 2014 Revolver and the full balance of $15,000 was available for borrowing. On October 30 , 2018, the Company amended and restated the 2014 Credit Agreement by entering into (i) a three -year senior credit facility agreement (the 2018 Credit Agreement) with Bank of America, N.A., as Administrative Agent, and the lenders named from time to time as parties thereto (the 2018 Lenders), for an aggregate amount of up to $42,500 , including a term loan (2018 Term Loan) of $22,500 and a reducing revolving credit facility (the 2018 Revolver) of up to $20,000 initially and reducing to $15,000 on December 31, 2019, each to be used for general corporate purposes, including the refinancing of the Company’s then-outstanding indebtedness under the 2014 Credit Agreement as described below, (ii) a Security Agreement required by the 2018 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 2018 Credit Agreement, and (iii) Pledge Agreements required by the 2018 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 2018 Credit Agreement. On the closing date, the Company repaid $17,225 on the 2014 Term Loan and refinanced its remaining balance. On the closing date, the Company also borrowed $5,000 under the 2018 Revolver. The Company is required to make principal repayments on the 2018 Term Loan in the amount of $563 at the end of each of the first four three-month periods following the closing (ending with the period ending September 30, 2019); thereafter, the principal repayment amount increases to $703 for the four succeeding three-month periods (ending with the period ending September 30, 2020) and further increases to $844 for each succeeding three-month period (ending with the period ending June 30, 2021) until the maturity of the loan on October 30, 2021. The first principal payment on the 2018 Term Loan is due on December 31, 2018. On October 30, 2021, the entire remaining principal balance of the 2018 Term Loan and the entire principal balance of any outstanding loans under the 2018 Revolver are due and payable, together with all accrued and unpaid interest, fees, and any other amounts due and payable under the 2018 Credit Agreement. The 2018 Credit Agreement contains provisions requiring the mandatory prepayment of amounts outstanding under the 2018 Term Loan and the 2018 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 above certain threshold amounts outside the ordinary course of business. The prepayments are first applied to the 2018 Term Loan, in inverse order of maturity, and then to the 2018 Revolver. Loans under the 2018 Credit Agreement bear interest at varying rates determined in accordance with the 2018 Credit Agreement. Each Eurodollar Rate Loan, as defined in the 2018 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 Eurodollar Rate, each as defined in the 2018 Credit Agreement, as elected by the Company, plus the Applicable Margin, as defined in the 2018 Credit Agreement, and each Base Rate Loan, as defined in the 2018 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 2018 Credit Agreement, plus the Applicable Margin. The Applicable Margin ranges from 1.50% to 2.375% on Eurodollar Rate Loans and from 0.50% to 1.375% on Base Rate Loans, each depending on the Company’s Consolidated Leverage Ratio, as defined in the 2018 Credit Agreement. The highest Applicable Margin applies initially until the Compliance Certificate, as defined in the 2018 Credit Agreement, is delivered for the quarter ending June 30, 2019 and subsequently when the Consolidated Leverage Ratio exceeds 2.50 :1.00. Upon certain defaults, including failure to make payments when due, interest becomes payable at a higher default rate. Borrowings under the 2018 Revolver are subject to the satisfaction of various 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 2018 Credit Agreement. The 2018 Credit Agreement contains two financial covenants, a maximum Consolidated Leverage Ratio and a minimum Consolidated Fixed Charge Coverage Ratio, each as defined in the 2018 Credit Agreement. The Consolidated Leverage Ratio initially may not be greater than 3.00 :1.00 and declines to 2.75 :1.00 on September 30, 2019, to 2.50 :1.00 on December 31, 2019 and to 2.00 :1.00 on December 31, 2020. The Consolidated Fixed Charge Coverage Ratio may not be less than 1.25 :1.00. The 2018 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, performance of 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 2018 Credit Agreement could be accelerated upon an event of default under its terms, 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 2018 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 Company property loss events, and certain events relating to the impairment of collateral or the 2018 Lenders' security interest therein. The Company has elected to exclude from current liabilities $20,252 for the 2014 Term Loan as the Company had the ability to refinance the short-term obligation on a long-term basis in accordance with ASC 470-10-45-14. 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 nine months ended September 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

Segment Reporting	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Segment Reporting	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 17% and 18% of the Company's consolidated net sales for the three months ended September 30, 2018 and 2017 , respectively, and 19% and 21% of the Company's consolidated net sales for the nine months ended September 30, 2018 and 2017 , respectively. Sales of mini-VSAT Broadband airtime service accounted for 41% and 42% of the Company's consolidated net sales for the three months ended September 30, 2018 and 2017 , respectively, and 41% of the Company's consolidated net sales for the nine months ended September 30, 2018 and 2017 . Sales of content and training services within the mobile connectivity segment accounted for 16% and 20% of the Company's consolidated net sales for the three months ended September 30, 2018 and 2017 , respectively, and 18% and 20% of the Company's consolidated net sales for the nine months ended September 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 18% and 13% of the Company's consolidated net sales for the three months ended September 30, 2018 and 2017 , respectively, and 16% and 12% of the Company's consolidated net sales for the nine months ended September 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% of the Company's consolidated net sales for the three months ended September 30, 2018 and 2017 , and 59% and 61% of the Company's consolidated net sales for the nine months ended September 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 September 30, 2018 and 2017 . No individual foreign country represented 10% or more of the Company's consolidated net sales for the nine months ended September 30, 2018 or 2017 . As of September 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 nine months ended September 30, 2018 and 2017 were as follows: Three Months Ended Nine Months Ended September 30, September 30, 2018 2017 2018 2017 Net sales: Mobile connectivity $ 33,425 $ 32,762 $ 99,938 $ 101,083 Inertial navigation 10,092 7,688 27,072 20,027 Consolidated net sales $ 43,517 $ 40,450 $ 127,010 $ 121,110 Operating income (loss): Mobile connectivity $ 1,443 $ 2,067 $ 3,664 $ 5,327 Inertial navigation 1,920 349 3,818 667 Subtotal 3,363 2,416 7,482 5,994 Unallocated, net (4,283 ) (4,217 ) (12,769 ) (13,633 ) Loss from operations (920 ) (1,801 ) (5,287 ) (7,639 ) Net interest and other income (expense) (93 ) (354 ) (455 ) (911 ) Loss before income tax expense $ (1,013 ) $ (2,155 ) (5,742 ) $ (8,550 ) Depreciation expense and amortization expense for the Company's segments are presented in the following table for the periods presented: Three Months Ended Nine Months Ended September 30, September 30, 2018 2017 2018 2017 Depreciation expense: Mobile connectivity $ 1,842 $ 1,339 $ 5,212 $ 4,212 Inertial navigation 260 293 766 687 Unallocated 133 17 402 57 Total consolidated depreciation expense $ 2,235 $ 1,649 $ 6,380 $ 4,956 Amortization expense: Mobile connectivity $ 958 $ 1,096 $ 3,101 $ 3,266 Inertial navigation — — — — Unallocated — — — — Total consolidated amortization expense $ 958 $ 1,096 $ 3,101 $ 3,266

Legal Matters

Legal Matters	9 Months Ended
	Sep. 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

Share Buyback Program	9 Months Ended
	Sep. 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 September 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 nine months ended September 30, 2018 and no repurchase programs expired during the period. During the nine months ended September 30, 2018 and 2017 , the Company did not repurchase any shares of its common stock.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	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 September 30, 2018 and December 31, 2017 for which the Company measures fair value on a recurring basis, by level, within the fair value hierarchy: September 30, 2018 Total Level 1 Level 2 Level 3 Valuation Technique Assets Money market mutual funds $ 336 $ 336 $ — $ — (a) Liabilities Interest rate swaps 20 — 20 — (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 September 30, 2018 . The Company does not have any liabilities that are recorded at fair value on a non-recurring basis.

Goodwill and Intagible Assets

Goodwill and Intagible Assets	9 Months Ended
	Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill The following table sets forth the changes in the carrying amount of goodwill for the nine months ended September 30, 2018 : Amounts Balance at December 31, 2017 $ 33,872 Foreign currency translation adjustment (1,024 ) Balance at September 30, 2018 $ 32,848 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 nine months ended September 30, 2018 are as follows: Amounts Balance at December 31, 2017 $ 15,120 Amortization expense (3,101 ) Intangible assets acquired in asset acquisition 22 Foreign currency translation adjustment (404 ) Balance at September 30, 2018 $ 11,637 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 September 30, 2018 , the carrying value of the intangible assets acquired in the asset acquisition was $155 . 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 nine months ended September 30, 2018 , $22 additional consideration was earned under the contingent consideration arrangement. Acquired intangible assets are subject to amortization. The following table summarizes acquired intangible assets at September 30, 2018 and December 31, 2017 , respectively: Gross Carrying Amount Accumulated Amortization Net Carrying Value September 30, 2018 Subscriber relationships $ 17,662 $ 9,858 $ 7,804 Distribution rights 4,291 1,663 2,628 Internally developed software 2,327 2,327 — Proprietary content 8,185 7,070 1,115 Intellectual property 2,284 2,284 — Favorable lease 645 555 90 $ 35,394 $ 23,757 $ 11,637 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 nine months ended September 30, 2018 and 2017 was as follows: Three Months Ended Nine Months Ended September 30, September 30, Expense Category 2018 2017 2018 2017 Cost of service sales $ 374 $ 375 $ 1,163 $ 1,097 General and administrative expense 584 721 1,938 2,169 Total amortization expense $ 958 $ 1,096 $ 3,101 $ 3,266 As of September 30, 2018 , the total weighted average remaining useful lives of the definite-lived intangible assets was 3.6 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 4.1 Distribution rights 9.6 Proprietary content 0.8 Favorable lease 0.8 Estimated future amortization expense remaining at September 30, 2018 for intangible assets acquired is as follows: Remainder of 2018 $ 957 2019 3,018 2020 2,216 2021 2,216 2022 1,455 Thereafter 1,775 Total future amortization expense $ 11,637 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 third quarter of 2018 which indicated that an assessment of the impairment of goodwill and intangible assets was required.

Business and Credit Concentrati

Business and Credit Concentrations	9 Months Ended
	Sep. 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 nine months ended September 30, 2018 or 2017 or accounts receivable at September 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 Cus

Revenue from Contracts with Customers (ASC 606)	9 Months Ended
	Sep. 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 nine months ended September 30, 2018 or 2017 or accounts receivable at September 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 nine months ended September 30, 2018 reflect the application of ASC 606 guidance while the reported results for the three and nine months ended September 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 September 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 nine months ended September 30, 2018 : Three Months Ended Nine Months Ended September 30, 2018 Mobile connectivity product, transferred at point in time $ 6,297 $ 19,698 Mobile connectivity product, transferred over time 1,259 3,881 Mobile connectivity service 25,869 76,359 Inertial navigation product 8,811 22,942 Inertial navigation service 1,281 4,130 Total net sales $ 43,517 $ 127,010 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 September 30, 2018 , to the pro forma amounts that would have been reported if the previous guidance had been in effect: As of September 30, 2018 Balance Sheet As reported Pro forma as if the previous accounting guidance had been in effect Cash, cash equivalent and marketable securities $ 33,236 $ 33,236 Accounts receivable, net 28,971 28,971 Inventories 24,676 24,676 Contract assets 3,460 — Prepaid expenses and other current assets 3,741 3,741 Long-lived assets 96,860 96,860 Other non-current assets 6,701 6,701 Contract assets, long-term 6,626 — Non-current deferred income tax asset 201 46 Total assets $ 204,472 $ 194,231 Accounts payable, accrued expenses, and other current liabilities $ 58,342 $ 58,342 Deferred revenue, current — 6,424 Contract liabilities 10,770 — Long-term contract liabilities 8,771 — Other long-term liabilities 4,607 4,607 Long-term debt, excluding current portion 20,252 20,252 Total liabilities $ 102,742 $ 89,625 Accumulated deficit (13,575 ) (10,699 ) Common stock, additional paid-in capital, and accumulated other comprehensive loss 115,305 115,305 Total stockholders’ equity $ 101,730 $ 104,606 Total liabilities and stockholders’ equity $ 204,472 $ 194,231 Total reported assets and reported liabilities were $10,241 and $13,117 , respectively, greater than the pro forma balance sheet, which assumes that the previous guidance remained in effect as of September 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 September 30, 2018 Nine Months Ended September 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 $ 16,367 $ 16,775 $ 46,521 $ 47,519 Service 27,150 27,150 80,489 80,489 Net Sales 43,517 43,925 127,010 128,008 Costs and expenses: Costs of product sales 9,767 10,177 28,784 29,670 Costs of service sales 15,376 15,376 44,690 44,690 Research and development 3,789 3,789 11,288 11,288 Sales, marketing and support 8,421 8,412 25,856 25,888 General and administrative 7,084 7,084 21,679 21,679 Total operating expenses 44,437 44,838 132,297 133,215 Loss from operations (920 ) (913 ) (5,287 ) (5,207 ) Other income (expense), net (93 ) (93 ) (455 ) (455 ) Loss before income tax expense (1,013 ) (1,006 ) (5,742 ) (5,662 ) Income tax expense 161 138 668 620 Net loss $ (1,174 ) $ (1,144 ) $ (6,410 ) $ (6,282 ) Net loss per common share: Basic and diluted $ (0.07 ) $ (0.07 ) $ (0.38 ) $ (0.37 ) The following paragraphs summarize the significant changes to the Company’s consolidated statement of operations for the three and nine months ended September 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 $408 and $410 lower, respectively, for the three months ended September 30, 2018 and $998 and $886 lower, respectively, for the nine months ended September 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 $30 and $128 for the three and nine months ended September 30, 2018 , respectively. For the three months ended September 30, 2018 , there was no change in basic and diluted loss per share. For the nine months ended September 30, 2018 , there was a $0.01 increase in basic and diluted loss per share. Nine Months Ended September 30, 2018 Statement of Cash Flows As reported Pro forma as if the previous accounting guidance had been in effect Net loss $ (6,410 ) $ (6,282 ) Non cash adjustments to reconcile net loss to net cash used in operating activities 12,111 12,063 Changes in operating assets and liabilities: Accounts receivable and inventories (3,124 ) (3,124 ) Prepaid expenses, other assets, and contract assets (1,879 ) (961 ) Deferred revenue, contract liabilities, and long-term contract liabilities 701 (297 ) Accounts payable, accrued compensation, warranty, other, and other long-term liabilities 362 362 Net cash used in operating activities $ 1,761 $ 1,761 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 September 30, 2018 $ 3,460 $ 6,626 $ 10,770 $ 8,771 Revenue recognized during the three and nine months ended September 30, 2018 from amounts included in deferred revenue at the beginning of the fiscal year was approximately $1,117 and $3,525 , respectively. 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 nine months ended September 30, 2018 or 2017 or accounts receivable at September 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.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities	9 Months Ended
	Sep. 30, 2018
General Discussion of Derivative Instruments and Hedging Activities [Abstract]
Derivative Instruments and Hedging Activities	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 September 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 September 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 $ 1,322 $ (9 ) April 1, 2010 April 1, 2019 1-month LIBOR 5.91 % Interest rate swap $ 1,322 $ (11 ) 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

Income Taxes	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	(18) Income Taxes The Company’s effective tax rate for the three and nine months ended September 30, 2018 was (15.9)% and (11.6)% , respectively, compared with (13.1)% and (9.3)% 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 nine months ended September 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 nine months ended September 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 September 30, 2018 and December 31, 2017 , the Company had reserves for uncertain tax positions of $1,316 and $1,570 , respectively. The Company incurred $18 and $61 in interest and penalties for the three and nine months ended September 30, 2018 , respectively, which were recorded as a component of income tax expense. During the three months ended September 30, 2018 , the Company recorded a reduction in reserves for uncertain tax positions of $135 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 September 30, 2018 may decrease $173 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

Capital Lease	9 Months Ended
	Sep. 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 September 30, 2018 , the gross costs and accumulated depreciation associated with this lease are included in revenue generating assets and amounted to $3,068 and $298 , 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 $298 for the three and nine months ended September 30, 2018 , respectively. The future minimum capital lease payments under this capital lease as of September 30, 2018 are: Remainder of 2018 $ 156 2019 624 2020 624 2021 624 2022 624 2023 45 Total minimum lease payments $ 2,697 Less amount representing interest (1.53%) (38 ) Present value of net minimum capital lease payments $ 2,659 Less current installments of obligation under accrued other 609 Obligations under other long-term liabilities, excluding current installments $ 2,050

Summary of Significant Accounti

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 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 nine months ended September 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 nine months ended September 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 (Polic

Stock-Based Compensation (Policies)	9 Months Ended
	Sep. 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 $ 849 and $ 785 for the three months ended September 30, 2018 and 2017 , respectively, and $2,417 and $2,577 for the nine months ended September 30, 2018 and 2017 , respectively. As of September 30, 2018 , there was $2,621 of total unrecognized compensation expense related to stock options, which is expected to be recognized over a weighted-average period of 3.00 years. As of September 30, 2018 , there was $4,192 of total unrecognized compensation expense related to restricted stock awards, which is expected to be recognized over a weighted-average period of 2.26 years.

Fair Value Measurements (Polici

Fair Value Measurements (Policies)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements and Disclosures	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.

Goodwill and Intagible Assets (

Goodwill and Intagible Assets (Policies)	9 Months Ended
	Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets, Impairment Test Policy	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.

Marketable Securities (Tables)

Marketable Securities (Tables)	9 Months Ended
	Sep. 30, 2018
Marketable Securities [Abstract]
Available-for-sale Securities [Table Text Block]	(4) Marketable Securities Marketable securities as of September 30, 2018 and December 31, 2017 consisted of the following: September 30, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Money market mutual funds $ 336 $ — $ — $ 336 Total marketable securities designated as available-for-sale $ 336 $ — $ — $ 336 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]	The amortized costs and fair value of marketable securities as of September 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. September 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

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 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 nine months ended September 30, 2018 and 2017 were as follows: Nine Months Ended September 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	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 nine months ended September 30, 2018 and 2017 : Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Cost of product sales $ 40 $ 68 $ 122 $ 222 Cost of service sales — — — 1 Research and development 177 155 496 514 Sales, marketing and support 138 190 485 679 General and administrative 505 396 1,349 1,205 $ 860 $ 809 $ 2,452 $ 2,621
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, June 30, 2017 $ (13,610 ) $ (3 ) $ (113 ) $ (13,726 ) Other comprehensive income before reclassifications 1,956 2 1 1,959 Amounts reclassified from AOCI to Other income, net — — 18 18 Net other comprehensive income, September 30, 2017 1,956 2 19 1,977 Balance, September 30, 2017 $ (11,654 ) $ (1 ) $ (94 ) $ (11,749 ) The balances for the nine months ended September 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 (2,185 ) 1 11 (2,173 ) Amounts reclassified from AOCI to Other income, net — — 38 38 Net other comprehensive (loss) income, September 30, 2018 (2,185 ) 1 49 (2,135 ) Balance, September 30, 2018 $ (13,432 ) $ — $ (20 ) $ (13,452 ) 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 4,997 (1 ) 5 5,001 Amounts reclassified from AOCI to Other income, net — — 59 59 Net other comprehensive income (loss), September 30, 2017 4,997 (1 ) 64 5,060 Balance, September 30, 2017 $ (11,654 ) $ (1 ) $ (94 ) $ (11,749 )

Net Income (Loss) per Common _2

Net Income (Loss) per Common Share (Tables)	9 Months Ended
	Sep. 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 Nine Months Ended September 30, September 30, 2018 2017 2018 2017 Weighted average common shares outstanding—basic 17,188 16,469 17,025 16,393 Dilutive common shares issuable in connection with stock plans — — — — Weighted average common shares outstanding—diluted 17,188 16,469 17,025 16,393

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2018
Inventory Disclosure [Abstract]
Components of inventories	Components of inventories consist of the following: September 30, December 31, Raw materials $ 14,667 $ 13,347 Work in process 3,172 2,137 Finished goods 6,837 7,248 $ 24,676 $ 22,732

Product Warranty (Tables)

Product Warranty (Tables)	9 Months Ended
	Sep. 30, 2018
Product Warranties Disclosures [Abstract]
Summary of product warranty activity	The following table summarizes product warranty activity during 2018 and 2017 : Nine Months Ended September 30, 2018 2017 Beginning balance $ 2,074 $ 2,280 Charges to expense 1,592 845 Costs incurred (1,634 ) (810 ) Ending balance $ 2,032 $ 2,315

Debt Long-term debt (Tables)

Debt Long-term debt (Tables)	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments [Table Text Block]	Long-term debt consisted of the following: September 30, December 31, 2014 term note $ 40,300 $ 44,275 Mortgage loan 2,643 2,779 Total 42,943 47,054 Less amounts classified as current 22,691 2,482 Long-term debt, excluding current portion $ 20,252 $ 44,572

Segment Reporting (Tables)

Segment Reporting (Tables)	9 Months Ended
	Sep. 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 nine months ended September 30, 2018 and 2017 were as follows: Three Months Ended Nine Months Ended September 30, September 30, 2018 2017 2018 2017 Net sales: Mobile connectivity $ 33,425 $ 32,762 $ 99,938 $ 101,083 Inertial navigation 10,092 7,688 27,072 20,027 Consolidated net sales $ 43,517 $ 40,450 $ 127,010 $ 121,110 Operating income (loss): Mobile connectivity $ 1,443 $ 2,067 $ 3,664 $ 5,327 Inertial navigation 1,920 349 3,818 667 Subtotal 3,363 2,416 7,482 5,994 Unallocated, net (4,283 ) (4,217 ) (12,769 ) (13,633 ) Loss from operations (920 ) (1,801 ) (5,287 ) (7,639 ) Net interest and other income (expense) (93 ) (354 ) (455 ) (911 ) Loss before income tax expense $ (1,013 ) $ (2,155 ) (5,742 ) $ (8,550 ) Depreciation expense and amortization expense for the Company's segments are presented in the following table for the periods presented: Three Months Ended Nine Months Ended September 30, September 30, 2018 2017 2018 2017 Depreciation expense: Mobile connectivity $ 1,842 $ 1,339 $ 5,212 $ 4,212 Inertial navigation 260 293 766 687 Unallocated 133 17 402 57 Total consolidated depreciation expense $ 2,235 $ 1,649 $ 6,380 $ 4,956 Amortization expense: Mobile connectivity $ 958 $ 1,096 $ 3,101 $ 3,266 Inertial navigation — — — — Unallocated — — — — Total consolidated amortization expense $ 958 $ 1,096 $ 3,101 $ 3,266

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Schedule of assets and liabilities measured at fair value on recurring basis	The following tables present financial assets and liabilities at September 30, 2018 and December 31, 2017 for which the Company measures fair value on a recurring basis, by level, within the fair value hierarchy: September 30, 2018 Total Level 1 Level 2 Level 3 Valuation Technique Assets Money market mutual funds $ 336 $ 336 $ — $ — (a) Liabilities Interest rate swaps 20 — 20 — (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_2

Goodwill and Intagible Assets (Tables)	9 Months Ended
	Sep. 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 nine months ended September 30, 2018 : Amounts Balance at December 31, 2017 $ 33,872 Foreign currency translation adjustment (1,024 ) Balance at September 30, 2018 $ 32,848
Schedule of finite-lived intangible assets	The changes in the carrying amount of intangible assets during the nine months ended September 30, 2018 are as follows: Amounts Balance at December 31, 2017 $ 15,120 Amortization expense (3,101 ) Intangible assets acquired in asset acquisition 22 Foreign currency translation adjustment (404 ) Balance at September 30, 2018 $ 11,637
Finite-lived Intangible Assets Amortization Expense [Table Text Block]	Acquired intangible assets are subject to amortization. The following table summarizes acquired intangible assets at September 30, 2018 and December 31, 2017 , respectively: Gross Carrying Amount Accumulated Amortization Net Carrying Value September 30, 2018 Subscriber relationships $ 17,662 $ 9,858 $ 7,804 Distribution rights 4,291 1,663 2,628 Internally developed software 2,327 2,327 — Proprietary content 8,185 7,070 1,115 Intellectual property 2,284 2,284 — Favorable lease 645 555 90 $ 35,394 $ 23,757 $ 11,637 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 September 30, 2018 for intangible assets acquired is as follows: Remainder of 2018 $ 957 2019 3,018 2020 2,216 2021 2,216 2022 1,455 Thereafter 1,775 Total future amortization expense $ 11,637

Revenue from Contracts with C_2

Revenue from Contracts with Customers (ASC 606) (Tables)	9 Months Ended
	Sep. 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 nine months ended September 30, 2018 : Three Months Ended Nine Months Ended September 30, 2018 Mobile connectivity product, transferred at point in time $ 6,297 $ 19,698 Mobile connectivity product, transferred over time 1,259 3,881 Mobile connectivity service 25,869 76,359 Inertial navigation product 8,811 22,942 Inertial navigation service 1,281 4,130 Total net sales $ 43,517 $ 127,010
Schedule of Prospective Adoption of New Accounting Pronouncements [Table Text Block]	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 September 30, 2018 $ 3,460 $ 6,626 $ 10,770 $ 8,771 Nine Months Ended September 30, 2018 Statement of Cash Flows As reported Pro forma as if the previous accounting guidance had been in effect Net loss $ (6,410 ) $ (6,282 ) Non cash adjustments to reconcile net loss to net cash used in operating activities 12,111 12,063 Changes in operating assets and liabilities: Accounts receivable and inventories (3,124 ) (3,124 ) Prepaid expenses, other assets, and contract assets (1,879 ) (961 ) Deferred revenue, contract liabilities, and long-term contract liabilities 701 (297 ) Accounts payable, accrued compensation, warranty, other, and other long-term liabilities 362 362 Net cash used in operating activities $ 1,761 $ 1,761 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 The following tables compare the reported consolidated balance sheet, statement of operations and cash flows, as of and for the three months ended September 30, 2018 , to the pro forma amounts that would have been reported if the previous guidance had been in effect: As of September 30, 2018 Balance Sheet As reported Pro forma as if the previous accounting guidance had been in effect Cash, cash equivalent and marketable securities $ 33,236 $ 33,236 Accounts receivable, net 28,971 28,971 Inventories 24,676 24,676 Contract assets 3,460 — Prepaid expenses and other current assets 3,741 3,741 Long-lived assets 96,860 96,860 Other non-current assets 6,701 6,701 Contract assets, long-term 6,626 — Non-current deferred income tax asset 201 46 Total assets $ 204,472 $ 194,231 Accounts payable, accrued expenses, and other current liabilities $ 58,342 $ 58,342 Deferred revenue, current — 6,424 Contract liabilities 10,770 — Long-term contract liabilities 8,771 — Other long-term liabilities 4,607 4,607 Long-term debt, excluding current portion 20,252 20,252 Total liabilities $ 102,742 $ 89,625 Accumulated deficit (13,575 ) (10,699 ) Common stock, additional paid-in capital, and accumulated other comprehensive loss 115,305 115,305 Total stockholders’ equity $ 101,730 $ 104,606 Total liabilities and stockholders’ equity $ 204,472 $ 194,231 Three Months Ended September 30, 2018 Nine Months Ended September 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 $ 16,367 $ 16,775 $ 46,521 $ 47,519 Service 27,150 27,150 80,489 80,489 Net Sales 43,517 43,925 127,010 128,008 Costs and expenses: Costs of product sales 9,767 10,177 28,784 29,670 Costs of service sales 15,376 15,376 44,690 44,690 Research and development 3,789 3,789 11,288 11,288 Sales, marketing and support 8,421 8,412 25,856 25,888 General and administrative 7,084 7,084 21,679 21,679 Total operating expenses 44,437 44,838 132,297 133,215 Loss from operations (920 ) (913 ) (5,287 ) (5,207 ) Other income (expense), net (93 ) (93 ) (455 ) (455 ) Loss before income tax expense (1,013 ) (1,006 ) (5,742 ) (5,662 ) Income tax expense 161 138 668 620 Net loss $ (1,174 ) $ (1,144 ) $ (6,410 ) $ (6,282 ) Net loss per common share: Basic and diluted $ (0.07 ) $ (0.07 ) $ (0.38 ) $ (0.37 )

Revenue from Contracts with C_3

Revenue from Contracts with Customers (ASC 606) - Impact of New Revenue Guidance on Financial Statement Line Items (Tables)	9 Months Ended
	Sep. 30, 2018
Impact of New Revenue Guidance on Financial Statement Line Items [Abstract]
Schedule of Prospective Adoption of New Accounting Pronouncements [Table Text Block]	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 September 30, 2018 $ 3,460 $ 6,626 $ 10,770 $ 8,771 Nine Months Ended September 30, 2018 Statement of Cash Flows As reported Pro forma as if the previous accounting guidance had been in effect Net loss $ (6,410 ) $ (6,282 ) Non cash adjustments to reconcile net loss to net cash used in operating activities 12,111 12,063 Changes in operating assets and liabilities: Accounts receivable and inventories (3,124 ) (3,124 ) Prepaid expenses, other assets, and contract assets (1,879 ) (961 ) Deferred revenue, contract liabilities, and long-term contract liabilities 701 (297 ) Accounts payable, accrued compensation, warranty, other, and other long-term liabilities 362 362 Net cash used in operating activities $ 1,761 $ 1,761 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 The following tables compare the reported consolidated balance sheet, statement of operations and cash flows, as of and for the three months ended September 30, 2018 , to the pro forma amounts that would have been reported if the previous guidance had been in effect: As of September 30, 2018 Balance Sheet As reported Pro forma as if the previous accounting guidance had been in effect Cash, cash equivalent and marketable securities $ 33,236 $ 33,236 Accounts receivable, net 28,971 28,971 Inventories 24,676 24,676 Contract assets 3,460 — Prepaid expenses and other current assets 3,741 3,741 Long-lived assets 96,860 96,860 Other non-current assets 6,701 6,701 Contract assets, long-term 6,626 — Non-current deferred income tax asset 201 46 Total assets $ 204,472 $ 194,231 Accounts payable, accrued expenses, and other current liabilities $ 58,342 $ 58,342 Deferred revenue, current — 6,424 Contract liabilities 10,770 — Long-term contract liabilities 8,771 — Other long-term liabilities 4,607 4,607 Long-term debt, excluding current portion 20,252 20,252 Total liabilities $ 102,742 $ 89,625 Accumulated deficit (13,575 ) (10,699 ) Common stock, additional paid-in capital, and accumulated other comprehensive loss 115,305 115,305 Total stockholders’ equity $ 101,730 $ 104,606 Total liabilities and stockholders’ equity $ 204,472 $ 194,231 Three Months Ended September 30, 2018 Nine Months Ended September 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 $ 16,367 $ 16,775 $ 46,521 $ 47,519 Service 27,150 27,150 80,489 80,489 Net Sales 43,517 43,925 127,010 128,008 Costs and expenses: Costs of product sales 9,767 10,177 28,784 29,670 Costs of service sales 15,376 15,376 44,690 44,690 Research and development 3,789 3,789 11,288 11,288 Sales, marketing and support 8,421 8,412 25,856 25,888 General and administrative 7,084 7,084 21,679 21,679 Total operating expenses 44,437 44,838 132,297 133,215 Loss from operations (920 ) (913 ) (5,287 ) (5,207 ) Other income (expense), net (93 ) (93 ) (455 ) (455 ) Loss before income tax expense (1,013 ) (1,006 ) (5,742 ) (5,662 ) Income tax expense 161 138 668 620 Net loss $ (1,174 ) $ (1,144 ) $ (6,410 ) $ (6,282 ) Net loss per common share: Basic and diluted $ (0.07 ) $ (0.07 ) $ (0.38 ) $ (0.37 )

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Tables)	9 Months Ended
	Sep. 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 September 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 $ 1,322 $ (9 ) April 1, 2010 April 1, 2019 1-month LIBOR 5.91 % Interest rate swap $ 1,322 $ (11 ) April 1, 2010 April 1, 2019 1-month LIBOR 6.07 %

Schedule of Future Minimum Leas

Schedule of Future Minimum Lease Payments for Capital Leases (Tables)	9 Months Ended
	Sep. 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 September 30, 2018 are: Remainder of 2018 $ 156 2019 624 2020 624 2021 624 2022 624 2023 45 Total minimum lease payments $ 2,697 Less amount representing interest (1.53%) (38 ) Present value of net minimum capital lease payments $ 2,659 Less current installments of obligation under accrued other 609 Obligations under other long-term liabilities, excluding current installments $ 2,050

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Details) $ / shares in Units, shares in Thousands, $ in Thousands	Feb. 28, 2018USD ($)$ / sharesshares	Sep. 30, 2018USD ($)hub	Sep. 30, 2017USD ($)
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)

Marketable Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	$ 336	$ 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	336	8,319
Mutual Funds, Money Market [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	336	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	336	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

Marketable Securities Maturity Schedule (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	$ 336	$ 8,320
Available-for-sale Securities	336	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	336	7,318
Available-for-sale Securities	336	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)

Marketable Securities Textual (

Marketable Securities Textual (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Marketable Securities [Abstract]
Interest Income, Money Market Deposits	$ 2	$ 25	$ 17	$ 86

Stock-Based Compensation (Detai

Stock-Based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 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	1,281,000		1,281,000
Allocated Share-based Compensation Expense	$ 860	$ 809	$ 2,452	$ 2,621
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	22,000		35,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	0		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	$ 10.27		$ 10.27
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	343,000		343,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 10.89		$ 10.89
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	65,000		152,000
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	$ 849	785	$ 2,417	$ 2,577
Unrecognized compensation expense	$ 2,621		$ 2,621
Weighted-average period of recognition (in years)			3 years 1 day
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	10,000		247,000
Unrecognized compensation expense	$ 4,192		$ 4,192
Weighted-average period of recognition (in years)			2 years 3 months 2 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	538,000		538,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	45,000		199,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 12.65		$ 11.47
Stock Issued During Period, Shares, Restricted Stock Award, Forfeited	0		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	$ 11	$ 24	$ 35	$ 44
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period	17,000	0	17,000	26,000

Stock-Based Compensation - Sche

Stock-Based Compensation - Schedule of Stock Based Compensation Expense (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	932	597	739	995
Allocated Share-based Compensation Expense	$ 860	$ 809	$ 2,452	$ 2,621
Cost of product sales
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	40	68	122	222
Cost of service sales
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	0	0	0	1
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	177	155	496	514
Sales, marketing and support
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	138	190	485	679
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	$ 505	$ 396	$ 1,349	$ 1,205

Stock-Based Compensation - Sc_2

Stock-Based Compensation - Schedule of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
AOCI Attributable to Parent [Roll Forward]
Beginning balance			$ 105,665
Net other comprehensive income (loss), September 30, 2017	$ (751)	$ 1,977	(2,135)	$ 5,060
Ending balance	101,730		101,730
Foreign Currency Translation
AOCI Attributable to Parent [Roll Forward]
Beginning balance	(12,669)	(13,610)	(11,247)	(16,651)
Other comprehensive income (loss) before reclassifications	(763)	1,956	(2,185)	4,997
Amounts reclassified from AOCI to Other income (expense), net	0	0	0	0
Net other comprehensive income (loss), September 30, 2017	(763)	1,956	(2,185)	4,997
Ending balance	(13,432)	(11,654)	(13,432)	(11,654)
Unrealized Gain (Loss) on Available for Sale Marketable Securities
AOCI Attributable to Parent [Roll Forward]
Beginning balance	0	(3)	(1)	0
Other comprehensive income (loss) before reclassifications	0	2	1	(1)
Amounts reclassified from AOCI to Other income (expense), net	0	0	0	0
Net other comprehensive income (loss), September 30, 2017	0	2	1	(1)
Ending balance	0	(1)	0	(1)
Unrealized Gain (Loss) on Available for Sale Marketable Securities
AOCI Attributable to Parent [Roll Forward]
Beginning balance	(32)	(113)	(69)	(158)
Other comprehensive income (loss) before reclassifications	0	1	11	5
Amounts reclassified from AOCI to Other income (expense), net	12	18	38	59
Net other comprehensive income (loss), September 30, 2017	12	19	49	64
Ending balance	(20)	(94)	(20)	(94)
Total Accumulated Other Comprehensive Loss
AOCI Attributable to Parent [Roll Forward]
Beginning balance	(12,701)	(13,726)	(11,317)	(16,809)
Other comprehensive income (loss) before reclassifications	(763)	1,959	(2,173)	5,001
Amounts reclassified from AOCI to Other income (expense), net	12	18	38	59
Net other comprehensive income (loss), September 30, 2017	(751)	1,977	(2,135)	5,060
Ending balance	$ (13,452)	$ (11,749)	$ (13,452)	$ (11,749)

Net Income (Loss) per Common _3

Net Income (Loss) per Common Share (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Weighted Average Number of Shares Outstanding, Basic and Diluted		16,469	17,025	16,393
Weighted Average Number of Shares Outstanding, Basic	17,188	16,469	17,025	16,393
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	17,188	16,469	17,025	16,393

Net Income (Loss) per Common _4

Net Income (Loss) per Common Share (Details Textual) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	932	597	739	995

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Components of inventories
Raw materials	$ 14,667	$ 13,347
Work in process	3,172	2,137
Finished goods	6,837	7,248
Inventories, net	$ 24,676	$ 22,732

Property and Equipment (Details

Property and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 108,111		$ 108,111		$ 94,620
Property, Plant and Equipment, Net	52,375		52,375		43,521
Depreciation	2,235	$ 1,649	6,380	$ 4,956
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(55,736)		(55,736)		(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	24,087		24,087		24,038
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	480		480		429
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	25,208		25,208		24,764
Hardware Revenue Generating Asset [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net	40,543		40,543		28,453
Office And Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	13,914		13,914		13,057
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 51		$ 51		$ 51

Property and Equipment (Detai_2

Property and Equipment (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Depreciation	$ 2,235	$ 1,649	$ 6,380	$ 4,956
Property, Plant and Equipment, Net	52,375		52,375		$ 43,521
Hardware Revenue Generating Asset [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net	$ 40,543		$ 40,543		$ 28,453

Product Warranty (Details)

Product Warranty (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Product Warranties Disclosures [Abstract]
Product Warranty Accrual	$ 2,032		$ 2,074
Summary of product warranty activity
Beginning balance	2,074	$ 2,280
Charges to expense	1,592	845
Costs incurred	(1,634)	(810)
Ending balance	$ 2,032	$ 2,315

Product Warranty (Details Textu

Product Warranty (Details Textual) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Product Warranty (Textual) [Abstract]
Accrued product warranty costs	$ 2,032	$ 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)

Debt (Details)

Feb. 28, 2018USD ($)

Jul. 01, 2014

Apr. 06, 2009USD ($)

Jun. 30, 2021USD ($)

Sep. 30, 2020USD ($)

Sep. 30, 2019USD ($)

Sep. 30, 2018USD ($)covenant

Sep. 30, 2017USD ($)

Oct. 01, 2021

Oct. 01, 2021USD ($)

Dec. 31, 2019USD ($)

Jun. 30, 2019

Apr. 01, 2019USD ($)

Oct. 30, 2018USD ($)

Dec. 31, 2017USD ($)

Jul. 02, 2014USD ($)

Apr. 01, 2010Contract

Debt Instrument [Line Items]

Long-term Debt

$ 42,943,000

$ 47,054,000

Long-term debt, Repayment of Principal in connection with Amendment

$ 17,225,000

Long-term Debt, Current Maturities

22,691,000

2,482,000

Long-term Debt, Excluding Current Maturities

20,252,000

44,572,000

Line of Credit Facility, Current Borrowing Capacity

$ 15,000,000

Long-term Line of Credit

5,000,000

Number of Financial Covenants | covenant

2

Proceeds from Sale of Treasury Stock

$ 4,500,000

$ 4,500,000

$ 0

Repayments of Long-term loan

3,975,000

$ 8,775,000

Senior Credit Facility [Member]

Debt Instrument [Line Items]

Debt Instrument, Term

5 years

3 years

Line of Credit [Member] | Term Loan [Member]

Debt Instrument [Line Items]

Long-term Debt

$ 40,300,000

44,275,000

Line of Credit [Member] | Senior Credit Facility [Member] | Eurodollar Rate Loan [Member] | Minimum [Member] | Base Rate [Member]

Debt Instrument [Line Items]

Debt Instrument, Basis Spread on Variable Rate

1.50%

Line of Credit [Member] | Senior Credit Facility [Member] | Eurodollar Rate Loan [Member] | Maximum | Base Rate [Member]

Debt Instrument [Line Items]

Debt Instrument, Basis Spread on Variable Rate

2.375%

Line of Credit [Member] | Senior Credit Facility [Member] | Line of Credit [Member]

Debt Instrument [Line Items]

Line of Credit Facility, Current Borrowing Capacity

42,500,000

$ 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

$ 250,000

Line of Credit [Member] | Senior Credit Facility [Member] | Line of Credit [Member] | Debt Instrument, Redemption, Period Two [Member]

Debt Instrument [Line Items]

Line of Credit Facility, Covenant Compliance, Maximum Consolidated Leverage Ratio

2.75

Line of Credit [Member] | Senior Credit Facility [Member] | Line of Credit [Member] | Debt Instrument, Redemption, Period Three [Member]

Debt Instrument [Line Items]

Line of Credit Facility, Covenant Compliance, Maximum Consolidated Leverage Ratio

2.50

Line of Credit [Member] | Senior Credit Facility [Member] | Line of Credit [Member] | Debt Instrument, Redemption, Period Four [Member]

Debt Instrument [Line Items]

Line of Credit Facility, Covenant Compliance, Maximum Consolidated Leverage Ratio

2

Line of Credit [Member] | Senior Credit Facility [Member] | Line of Credit [Member] | Debt Instrument, Redemption, Period One [Member] | Maximum

Debt Instrument [Line Items]

Line of Credit Facility, Covenant Compliance, Maximum Consolidated Leverage Ratio

3

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

20,000,000

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

$ 22,500,000

$ 65,000,000

Line of Credit [Member] | Senior Credit Facility [Member] | Base Rate Loan [Member] | Minimum [Member] | Base Rate [Member]

Debt Instrument [Line Items]

Debt Instrument, Basis Spread on Variable Rate

0.50%

Line of Credit [Member] | Senior Credit Facility [Member] | Base Rate Loan [Member] | Maximum | Base Rate [Member]

Debt Instrument [Line Items]

Debt Instrument, Basis Spread on Variable Rate

1.375%

Mortgages [Member]

Debt Instrument [Line Items]

Long-term Debt

$ 2,643,000

$ 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]

Line of Credit Facility, Covenant Compliance, Maximum Consolidated Leverage Ratio

2.50

Scenario, Forecast [Member] | 2018 Term Loan [Member]

Debt Instrument [Line Items]

Debt Instrument, Periodic Payment, Principal

$ 844,000

$ 703,000

$ 563,000

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 Text

Segment Reporting (Details Textual)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Mobile Connectivity [Member] | Mobile Comm Product Sales [Member]
Segment Reporting Information [Line Items]
Percent of Consolidated Net Sales	17.00%	18.00%	19.00%	21.00%
Mobile Connectivity [Member] | VSAT Airtime Service Sales [Member]
Segment Reporting Information [Line Items]
Percent of Consolidated Net Sales	41.00%	42.00%	41.00%	41.00%
Mobile Connectivity [Member] | Training and Content Sales [Member]
Segment Reporting Information [Line Items]
Percent of Consolidated Net Sales	16.00%	20.00%	18.00%	20.00%
Intertial Navigation [Member] | FOG System Sales [Member]
Segment Reporting Information [Line Items]
Percent of Consolidated Net Sales	18.00%	13.00%	16.00%	12.00%
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%	60.00%	59.00%	61.00%

Segment Reporting Net Sales and

Segment Reporting Net Sales and Operating Earnings (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Revenue, Net	$ 43,517	$ 40,450	$ 127,010	$ 121,110
Operating Income (Loss)	(920)	(1,801)	(5,287)	(7,639)
Net interest and other expense	(93)	(354)	(455)	(911)
(Loss) income before income tax expense	(1,013)	(2,155)	(5,742)	(8,550)
Mobile Connectivity and Intertial Navigation Combined [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	3,363	2,416	7,482	5,994
Other Segments [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	(4,283)	(4,217)	(12,769)	(13,633)
Operating Segments [Member] | Mobile Connectivity [Member]
Segment Reporting Information [Line Items]
Revenue, Net	33,425	32,762	99,938	101,083
Operating Income (Loss)	1,443	2,067	3,664	5,327
Operating Segments [Member] | Intertial Navigation [Member]
Segment Reporting Information [Line Items]
Revenue, Net	10,092	7,688	27,072	20,027
Operating Income (Loss)	$ 1,920	$ 349	$ 3,818	$ 667

Segment Reporting Deprecation a

Segment Reporting Deprecation and Amortization Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Depreciation	$ 2,235	$ 1,649	$ 6,380	$ 4,956
Amortization expense	958	1,096	3,101	3,266
Mobile Connectivity [Member]
Segment Reporting Information [Line Items]
Depreciation	1,842	1,339	5,212	4,212
Amortization expense	958	1,096	3,101	3,266
Intertial Navigation [Member]
Segment Reporting Information [Line Items]
Depreciation	260	293	766	687
Amortization expense	0	0	0	0
Other Segments [Member]
Segment Reporting Information [Line Items]
Depreciation	133	17	402	57
Amortization expense	$ 0	$ 0	$ 0	$ 0

Share Buyback Program (Details)

Share Buyback Program (Details) shares in Thousands	9 Months Ended
	Sep. 30, 2018Programshares	Nov. 26, 2008shares
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 (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	Sep. 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	$ 20	$ 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	20	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	336	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	336	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_3

Goodwill and Intagible Assets (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2018USD ($)
Goodwill [Roll Forward]
Balance at December 31, 2017	$ 33,872
Foreign currency translation adjustment	(1,024)
Balance at September 30, 2018	$ 32,848

Goodwill and Intagible Assets_4

Goodwill and Intagible Assets (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Goodwill [Line Items]
Goodwill	$ 32,848		$ 32,848		$ 33,872
Intangible Assets, Gross (Excluding Goodwill)	11,637		11,637		15,120
Amortization expense	$ (958)	$ (1,096)	(3,101)	$ (3,266)
Finite-lived Intangible Assets Acquired			22		$ 100
Finite-Lived Intangible Assets, Translation Adjustments			$ (404)

Goodwill and Intagible Assets_5

Goodwill and Intagible Assets (Details 3) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 11,637	$ 15,120
Finite-lived intangible assets, gross	35,394	35,776
Intangible assets, accumulated amortization	23,757	20,656
Finite-lived intangible assets, net	11,637	15,120
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	17,662	17,912
Intangible assets, accumulated amortization	9,858	8,347
Finite-lived intangible assets, net	7,804	9,565
Distribution rights
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	4,291	4,385
Intangible assets, accumulated amortization	1,663	1,450
Finite-lived intangible assets, net	2,628	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	8,185	8,223
Intangible assets, accumulated amortization	7,070	5,908
Finite-lived intangible assets, net	$ 1,115	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	645	648
Intangible assets, accumulated amortization	555	461
Finite-lived intangible assets, net	$ 90	$ 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_6

Goodwill and Intagible Assets (Details 4) - USD ($) $ in Thousands	Dec. 31, 2026	Sep. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Remainder of 2018		$ 957
2,019		3,018
2,020		2,216
2,021		2,216
2,022		1,455
Thereafter		1,775
Total future amortization expense		11,637
Intangible Assets, Gross (Excluding Goodwill)		11,637	$ 15,120
Q1 2017 Acquisition [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)		$ 155
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 S

Goodwill and Intagible Assets Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired			$ 22		$ 100
Amortization of Intangible Assets	$ 958	$ 1,096	3,101	$ 3,266
General and administrative
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	584	721	1,938	2,169
Cost of service sales
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 374	$ 375	$ 1,163	$ 1,097

Goodwill and Intagible Assets I

Goodwill and Intagible Assets Intangible Asset Remaining Useful Life (Details)	9 Months Ended
	Sep. 30, 2018
Finite-Lived Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Remaining Amortization Period	3 years 7 months 18 days
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Remaining Amortization Period	4 years 1 month 1 day
Distribution rights
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Remaining Amortization Period	9 years 6 months 28 days
Trade Secrets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Remaining Amortization Period	9 months 28 days
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	9 months 28 days
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 Concentra_2

Business and Credit Concentrations (Details)	9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	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 C_4

Revenue from Contracts with Customers (ASC 606) Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 43,517	$ 127,010
Mobile Connectivity [Member] | Connectivity Product [Member] | Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenues	6,297	19,698
Mobile Connectivity [Member] | Connectivity Product [Member] | Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,259	3,881
Mobile Connectivity [Member] | Connectivity Service [Member]
Disaggregation of Revenue [Line Items]
Revenues	25,869	76,359
Intertial Navigation [Member] | Navigation Product [Member]
Disaggregation of Revenue [Line Items]
Revenues	8,811	22,942
Intertial Navigation [Member] | Navigation Service [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 1,281	$ 4,130

Revenue from Contracts with C_5

Revenue from Contracts with Customers (ASC 606) Financial Statement Impact of Adopting ASC 606 (Details) - USD ($)	Sep. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Financial Statement Impact of Adopting ASC 606 [Line Items]
Cash, Cash Equivalents, and Short-term Investments	$ 33,236,000		$ 42,915,000
Accounts receivable, net of allowance for doubtful accounts of $2,786 and $2,852 as of September 30, 2018 and December 31, 2017, respectively	28,971,000		28,316,000
Inventories	24,676,000		22,732,000
Current contract assets	3,460,000	$ 3,205,000	0
Prepaid Expense and Other Assets	3,741,000		3,816,000
Long-Lived Assets	96,860,000		92,513,000
Other Assets, Noncurrent	6,701,000		5,927,000
Non-current contract assets	6,626,000	5,963,000	0
Non-current deferred income tax asset	201,000		20,000
Assets	204,472,000		196,239,000
Accounts Payable and Other Accrued Liabilities, Current	58,342,000		36,430,000
Deferred Revenue, Current	0		6,919,000
Contract liabilities	10,770,000	11,039,000	0
Long-term contract liabilities	8,771,000	7,998,000	0
Other Liabilities, Noncurrent			2,653,000
Long-term Debt, Excluding Current Maturities	20,252,000		44,572,000
Liabilities	102,742,000		90,574,000
Retained Earnings (Accumulated Deficit)	13,575,000		4,417,000
Common stock, additional paid-in capital, and accumulated other comprehensive loss	115,305,000		110,082,000
Stockholders' Equity Attributable to Parent	101,730,000		105,665,000
Liabilities and Equity	204,472,000		196,239,000
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		42,915,000
Accounts receivable, net of allowance for doubtful accounts of $2,786 and $2,852 as of September 30, 2018 and December 31, 2017, respectively		28,316,000
Inventories		22,732,000
Current contract assets		3,205,000
Prepaid Expense and Other Assets		3,816,000
Long-Lived Assets		92,513,000
Other Assets, Noncurrent		5,927,000
Non-current contract assets		5,963,000
Non-current deferred income tax asset		222,000
Assets		205,609,000
Accounts Payable and Other Accrued Liabilities, Current		36,430,000
Deferred Revenue, Current		0
Contract liabilities		11,039,000
Long-term contract liabilities		7,998,000
Other Liabilities, Noncurrent		2,653,000
Long-term Debt, Excluding Current Maturities		44,572,000
Liabilities		102,692,000
Retained Earnings (Accumulated Deficit)		7,165,000
Common stock, additional paid-in capital, and accumulated other comprehensive loss		110,082,000
Stockholders' Equity Attributable to Parent		102,917,000
Liabilities and Equity		$ 205,609,000
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	33,236,000
Accounts receivable, net of allowance for doubtful accounts of $2,786 and $2,852 as of September 30, 2018 and December 31, 2017, respectively	28,971,000
Inventories	24,676,000
Current contract assets	0
Prepaid Expense and Other Assets	3,741,000
Long-Lived Assets	96,860,000
Other Assets, Noncurrent	6,701,000
Non-current contract assets	0
Non-current deferred income tax asset	46,000
Assets	194,231,000
Accounts Payable and Other Accrued Liabilities, Current	58,342,000
Deferred Revenue, Current	6,424,000
Contract liabilities	0
Long-term contract liabilities	0
Long-term Debt, Excluding Current Maturities	20,252,000
Liabilities	89,625,000
Retained Earnings (Accumulated Deficit)	10,699,000
Common stock, additional paid-in capital, and accumulated other comprehensive loss	115,305,000
Stockholders' Equity Attributable to Parent	104,606,000
Liabilities and Equity	194,231,000
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			0
Accounts receivable, net of allowance for doubtful accounts of $2,786 and $2,852 as of September 30, 2018 and December 31, 2017, respectively			0
Inventories			0
Current contract assets			3,205,000
Prepaid Expense and Other Assets			0
Long-Lived Assets			0
Other Assets, Noncurrent			0
Non-current contract assets			5,963,000
Non-current deferred income tax asset			202,000
Assets	10,241,000		9,370,000
Accounts Payable and Other Accrued Liabilities, Current			0
Deferred Revenue, Current			(6,919,000)
Contract liabilities			11,039,000
Long-term contract liabilities			7,998,000
Other Liabilities, Noncurrent			0
Long-term Debt, Excluding Current Maturities			0
Liabilities	$ 13,117,000		12,118,000
Retained Earnings (Accumulated Deficit)			2,748,000
Common stock, additional paid-in capital, and accumulated other comprehensive loss			0
Stockholders' Equity Attributable to Parent			(2,748,000)
Liabilities and Equity			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 C_6

Revenue from Contracts with Customers (ASC 606) Impact of New Revenue Guidance on Financial Statement Line Items (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
Financial Statement Impact of Adopting ASC 606 [Line Items]
Sales Revenue, Goods, Net	$ 16,367,000	$ 14,169,000	$ 46,521,000	$ 43,355,000
Sales Revenue, Services, Net	27,150,000	26,281,000	80,489,000	77,755,000
Revenue, Net	43,517,000	40,450,000	127,010,000	121,110,000
Cost of Goods Sold	9,767,000	9,578,000	28,784,000	29,412,000
Cost of Services	15,376,000	13,374,000	44,690,000	39,736,000
Research and Development Expense	3,789,000	3,990,000	11,288,000	11,698,000
Selling and Marketing Expense	8,421,000	8,234,000	25,856,000	25,098,000
General and Administrative Expense	7,084,000	7,075,000	21,679,000	22,805,000
Costs and Expenses	44,437,000	42,251,000	132,297,000	128,749,000
Operating Income (Loss)	(920,000)	(1,801,000)	(5,287,000)	(7,639,000)
Net interest and other expense	(93,000)	(354,000)	(455,000)	(911,000)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	(1,013,000)	(2,155,000)	(5,742,000)	(8,550,000)
Income tax expense	161,000	283,000	668,000	799,000
Cash, Cash Equivalents, and Short-term Investments	33,236,000		33,236,000			$ 42,915,000
Accounts receivable, net of allowance for doubtful accounts of $2,786 and $2,852 as of September 30, 2018 and December 31, 2017, respectively	28,971,000		28,971,000			28,316,000
Inventories	24,676,000		24,676,000			22,732,000
Current contract assets	3,460,000		3,460,000		$ 3,205,000	0
Prepaid Expense and Other Assets	3,741,000		3,741,000			3,816,000
Long-Lived Assets	96,860,000		96,860,000			92,513,000
Other Assets, Noncurrent	6,701,000		6,701,000			5,927,000
Non-current contract assets	6,626,000		6,626,000		5,963,000	0
Non-current deferred income tax asset	201,000		201,000			20,000
Assets	204,472,000		204,472,000			196,239,000
Accounts Payable and Other Accrued Liabilities, Current	58,342,000		58,342,000			36,430,000
Deferred Revenue, Current	0		0			6,919,000
Contract liabilities	10,770,000		10,770,000		11,039,000	0
Long-term contract liabilities	8,771,000		8,771,000		7,998,000	0
Deferred Income Taxes and Other Liabilities, Noncurrent	4,607,000		4,607,000
Long-term Debt, Excluding Current Maturities	20,252,000		20,252,000			44,572,000
Liabilities	102,742,000		$ 102,742,000			90,574,000
Subscriber Relationship, Estimated Life			5 years
Retained Earnings (Accumulated Deficit)	(13,575,000)		$ (13,575,000)			(4,417,000)
Common stock, additional paid-in capital, and accumulated other comprehensive loss	115,305,000		115,305,000			110,082,000
Stockholders' Equity Attributable to Parent	101,730,000		101,730,000			105,665,000
Liabilities and Equity	204,472,000		204,472,000			196,239,000
Net Income (Loss) Attributable to Parent	$ (1,174,000)	$ (2,438,000)	$ (6,410,000)	$ (9,349,000)
Earnings Per Share, Basic and Diluted	$ (0.07)	$ (0.15)	$ (0.38)	$ (0.57)
Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities			$ 12,111,000
Increase (Decrease) in Accounts Receivable and Inventories			(3,124,000)
Increase (Decrease) in Prepaid Expense and Other Assets			(1,879,000)
Increase (Decrease) in Deferred Revenue			701,000
Increase (Decrease) in Accounts Payable and Other Operating Liabilities			362,000
Net Cash Provided by (Used in) Operating Activities			1,761,000	$ 9,391,000
Deferred Revenue, Revenue Recognized	$ 1,117,000		3,525,000
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					42,915,000
Accounts receivable, net of allowance for doubtful accounts of $2,786 and $2,852 as of September 30, 2018 and December 31, 2017, respectively					28,316,000
Inventories					22,732,000
Current contract assets					3,205,000
Prepaid Expense and Other Assets					3,816,000
Long-Lived Assets					92,513,000
Other Assets, Noncurrent					5,927,000
Non-current contract assets					5,963,000
Non-current deferred income tax asset					222,000
Assets					205,609,000
Accounts Payable and Other Accrued Liabilities, Current					36,430,000
Deferred Revenue, Current					0
Contract liabilities					11,039,000
Long-term contract liabilities					7,998,000
Long-term Debt, Excluding Current Maturities					44,572,000
Liabilities					102,692,000
Retained Earnings (Accumulated Deficit)					(7,165,000)
Common stock, additional paid-in capital, and accumulated other comprehensive loss					110,082,000
Stockholders' Equity Attributable to Parent					102,917,000
Liabilities and Equity					$ 205,609,000
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						0
Accounts receivable, net of allowance for doubtful accounts of $2,786 and $2,852 as of September 30, 2018 and December 31, 2017, respectively						0
Inventories						0
Current contract assets						3,205,000
Prepaid Expense and Other Assets						0
Long-Lived Assets						0
Other Assets, Noncurrent						0
Non-current contract assets						5,963,000
Non-current deferred income tax asset						202,000
Assets	10,241,000		10,241,000			9,370,000
Accounts Payable and Other Accrued Liabilities, Current						0
Deferred Revenue, Current						(6,919,000)
Contract liabilities						11,039,000
Long-term contract liabilities						7,998,000
Long-term Debt, Excluding Current Maturities						0
Liabilities	13,117,000		13,117,000			12,118,000
Revenues	408,000		998,000
Cost of Revenue	410,000		886,000
Retained Earnings (Accumulated Deficit)						(2,748,000)
Common stock, additional paid-in capital, and accumulated other comprehensive loss						0
Stockholders' Equity Attributable to Parent						(2,748,000)
Liabilities and Equity						$ 9,370,000
Net Income (Loss) Attributable to Parent	$ 30,000		$ 128,000
Earnings Per Share, Basic and Diluted	$ 0		$ (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	$ 16,775,000		$ 47,519,000
Sales Revenue, Services, Net	27,150,000		80,489,000
Revenue, Net	43,925,000		128,008,000
Cost of Goods Sold	10,177,000		29,670,000
Cost of Services	15,376,000		44,690,000
Research and Development Expense	3,789,000		11,288,000
Selling and Marketing Expense	8,412,000		25,888,000
General and Administrative Expense	7,084,000		21,679,000
Costs and Expenses	44,838,000		133,215,000
Operating Income (Loss)	(913,000)		(5,207,000)
Net interest and other expense	(93,000)		(455,000)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	(1,006,000)		(5,662,000)
Income tax expense	138,000		620,000
Cash, Cash Equivalents, and Short-term Investments	33,236,000		33,236,000
Accounts receivable, net of allowance for doubtful accounts of $2,786 and $2,852 as of September 30, 2018 and December 31, 2017, respectively	28,971,000		28,971,000
Inventories	24,676,000		24,676,000
Current contract assets	0		0
Prepaid Expense and Other Assets	3,741,000		3,741,000
Long-Lived Assets	96,860,000		96,860,000
Other Assets, Noncurrent	6,701,000		6,701,000
Non-current contract assets	0		0
Non-current deferred income tax asset	46,000		46,000
Assets	194,231,000		194,231,000
Accounts Payable and Other Accrued Liabilities, Current	58,342,000		58,342,000
Deferred Revenue, Current	6,424,000		6,424,000
Contract liabilities	0		0
Long-term contract liabilities	0		0
Deferred Income Taxes and Other Liabilities, Noncurrent	4,607,000		4,607,000
Long-term Debt, Excluding Current Maturities	20,252,000		20,252,000
Liabilities	89,625,000		89,625,000
Retained Earnings (Accumulated Deficit)	(10,699,000)		(10,699,000)
Common stock, additional paid-in capital, and accumulated other comprehensive loss	115,305,000		115,305,000
Stockholders' Equity Attributable to Parent	104,606,000		104,606,000
Liabilities and Equity	194,231,000		194,231,000
Net Income (Loss) Attributable to Parent	$ (1,144,000)		$ (6,282,000)
Earnings Per Share, Basic and Diluted	$ (0.07)		$ (0.37)
Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities			$ 12,063,000
Increase (Decrease) in Accounts Receivable and Inventories			(3,124,000)
Increase (Decrease) in Prepaid Expense and Other Assets			(961,000)
Increase (Decrease) in Deferred Revenue			(297,000)
Increase (Decrease) in Accounts Payable and Other Operating Liabilities			362,000
Net Cash Provided by (Used in) Operating Activities			$ 1,761,000

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 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	$ 1,322	$ 1,389
Asset (Liability)	$ (9)	$ (33)
Effective Date	Apr. 1, 2010	Apr. 1, 2010
Maturity Date	Apr. 1, 2019	Apr. 1, 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	$ 1,322	$ 1,389
Asset (Liability)	$ (11)	$ (36)
Effective Date	Apr. 1, 2010	Apr. 1, 2010
Maturity Date	Apr. 1, 2019	Apr. 1, 2019
Derivative, Type of Interest Rate Paid on Swap	1-month LIBOR	1-month LIBOR
Strike rate			6.07%

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities (Details Textual) - Interest Rate Swap [Member]	Apr. 01, 2010Contract
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)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Income Taxes [Textual] [Abstract]
Effective Income Tax Rate Reconciliation, Percent	(15.90%)	(13.10%)	(11.60%)	(9.30%)
Reserve for Uncertain Tax Positions	$ 1,316		$ 1,316		$ 1,570
Income Tax Examination, Penalties and Interest Expense	18		61
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	135
Decrease in Unrecognized Tax Benefits is Reasonably Possible	$ 173		$ 173

Capital Lease (Details)

Capital Lease (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018USD ($)hub	Sep. 30, 2018USD ($)hub
Lessee, Lease, Description [Line Items]
Leased assets, Useful Life		7 years
Capital Leases, Income Statement, Amortization Expense	$ 110	$ 298
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	$ 298	$ 298

Future Minimum Capital Lease Pa

Future Minimum Capital Lease Payments (Details) $ in Thousands	Sep. 30, 2018USD ($)
Lessee, Capital Lease, Interest Rate	(1.53%)
Capital Leases, Future Minimum Payments, Remainder of Fiscal Year	$ 156
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	2,697
Capital Leases, Future Minimum Payments, Interest Included in Payments	(38)
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments	2,659
Accrued Liabilities [Member]
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments	609
Other Noncurrent Liabilities [Member]
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments	$ 2,050