Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Information [Table] Class of Stock [Axis] Class of Stock [Domain] Document Information [Line Items] Document Type Amendment Flag Document Period End Date Document Fiscal Year Focus Document Fiscal Period Focus Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Public Float Trading Symbol Entity Common Stock, Shares Outstanding Entity Shell Company Entity Emerging Growth Company Entity Small Business Statement of Financial Position [Abstract] Assets [Abstract] Assets Assets: Assets Total assets Assets, Current [Abstract] Current assets: Assets, Current Total current assets Accounts Receivable, Net, Current Accounts receivable, net of allowances of $500 and $587, respectively Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Cash and cash equivalents at end of period Cash and cash equivalents at end of period Cash, Cash Equivalents, and Short-term Investments Total cash, cash equivalents and short-term investments Inventory, Net Inventories Total inventory Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Total prepaid expenses and other current assets Short-term Investments Short-term investments Assets, Noncurrent [Abstract] Non-current assets: Assets, Noncurrent Total non-current assets Intangible Assets, Net (Including Goodwill) Goodwill and intangible assets, net Other Assets, Noncurrent Other non-current assets Total other non-current assets Property, Plant and Equipment, Net Property and equipment, net Property and equipment, net Property and equipment, net Commitments and Contingencies Commitments and contingencies (Note 15) Liabilities and Equity [Abstract] Liabilities and stockholders' deficit Liabilities and stockholders' deficit: Liabilities, Current [Abstract] Current liabilities: Capital Lease Obligations, Current Current portion capital leases Present value of net minimum lease payments, current portion Accounts Payable, Current Accounts payable Accrued Liabilities, Current Accrued liabilities Total accrued liabilities Liabilities, Current Total current liabilities Total current liabilities Deferred Airborne Lease Incentive Current Deferred airborne lease incentives Current deferred airborne lease incentive Deferred airborne lease incentives included in current liabilities This element represents the upfront payments made by our airline partners for equipment placed on their aircraft, which is anticipated to be recognized for financial reporting purposes within on year of the reporting date. The payments are accounted for as a lease incentive and recognized as a reduction to cost of service revenue on a straight-line basis over the term of the agreement with the airline partner. Deferred Revenue, Current Deferred revenue Current deferred revenue Liabilities Total liabilities Liabilities, Noncurrent [Abstract] Non-current liabilities: Liabilities, Noncurrent Total non-current liabilities Deferred Airborne Lease Incentive Non Current Deferred airborne lease incentives Non-current deferred airborne lease incentive Deferred airborne lease incentives included in non-current liabilities This element represents the upfront payments made by our airline partners for equipment placed on their aircraft, which is anticipated to be recognized for financial reporting purposes more than one year from the reporting date. The payments are accounted for as a lease incentive and recognized as a reduction to cost of service revenue on a straight-line basis over the term of the agreement with the airline partner. Long-term Debt, Excluding Current Maturities Long-term debt Total long-term debt Other Liabilities, Noncurrent Other non-current liabilities Total other non-current liabilities Liabilities and Equity Total liabilities and stockholders' deficit Total liabilities and stockholders' deficit Stockholders' Equity Attributable to Parent [Abstract] Stockholders' deficit Equity Additional Paid in Capital, Common Stock Additional paid-in-capital Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive loss Common Stock, Value, Issued Common stock, par value $0.0001 per share; 500,000,000 shares authorized at December 31, 2018 and 2017; 87,678,812 and 87,062,578 shares issued at December 31, 2018 and 2017, respectively; and 87,560,694 and 86,843,928 shares outstanding at December 31, 2018 and 2017, respectively Retained Earnings (Accumulated Deficit) Accumulated deficit Accumulated deficit Stockholders' Equity Attributable to Parent Total stockholders' deficit Beginning Balance Ending Balance Total stockholders' deficit Allowance for Doubtful Accounts Receivable, Current Allowances on accounts receivable Common Stock, Par or Stated Value Per Share Common stock, par value Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding Income Statement [Abstract] Statement [Table] Statement [Table] Product and Service [Axis] Product and Service [Domain] Product [Member] Service [Member] Statement [Line Items] Statement [Line Items] Costs and Expenses [Abstract] Operating expenses: Cost Of Goods Sold Exclusive Of Depreciation And Amortization Cost of equipment revenue (exclusive of items shown below) Cost of equipment revenue Total costs related to goods produced and sold during the reporting period, exclusive of depreciation and amortization shown below. Cost Of Services Exclusive Of Depreciation And Amortization Cost of service revenue (exclusive of items shown below) Total costs related to services rendered by an entity during the reporting period, exclusive of depreciation and amortization shown below. Costs and Expenses Total operating expenses Depreciation, Depletion and Amortization Depreciation and amortization Depreciation and amortization Engineering Design And Development Expense Engineering, design and development The costs incurred for the design and development of next generation technologies and products and the enhancement of existing products; and costs associated with obtaining and maintaining regulatory certifications. General and Administrative Expense General and administrative Operating Income (Loss) Operating loss Operating loss Selling and Marketing Expense Sales and marketing Earnings Per Share, Basic and Diluted Net loss attributable to common stock per share-basic and diluted Net loss attributable to common stock per share - basic and diluted Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Loss before income taxes Income (loss) before income taxes Net Income (Loss) Attributable to Parent Net loss Net loss Nonoperating Income (Expense) [Abstract] Other (income) expense: Adjustment Of Deferred Financing Costs Adjustment of deferred financing costs Adjustment of deferred financing fees Adjustment of deferred financing costs. Gain (Loss) on Extinguishment of Debt Loss on extinguishment of debt Loss on Early repayment of debt Loss on extinguishment of debt Interest Expense Interest expense Interest expense Interest expense Investment Income, Interest Interest income Interest income Nonoperating Income (Expense) Total other expense Other Nonoperating Income (Expense) Other (income) expense Other income (expense) Revenues [Abstract] Revenue: Revenue from Contract with Customer, Excluding Assessed Tax Total revenue Equipment revenue Disaggregation of revenue Total revenue Total revenue Weighted Average Number of Shares Outstanding, Basic and Diluted Weighted average number of shares-basic and diluted Weighted-average common shares outstanding-basic and diluted Weighted average number of shares - basic and diluted Income Tax Expense (Benefit) Income tax provision (benefit) Total Statement of Comprehensive Income [Abstract] Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive loss Comprehensive loss Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Currency translation adjustments, net of tax Currency translation adjustments, net of tax Statement of Cash Flows [Abstract] Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Increase (decrease) in cash, cash equivalents and restricted cash Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Non-cash Investing and Financing Activities: Acquisition Of Intangible Assets Capitalized In Current Liabilities Acquisition of intangible assets in current liabilities Future cash outflow to pay for purchases of intangible assets that have occurred. Asset Retirement Obligation, Liabilities Incurred Asset retirement obligation Capital Expenditures Incurred but Not yet Paid Purchases of property and equipment in current liabilities Capital Lease Obligations Incurred Purchases of property and equipment under capital leases Purchases Of Property And Equipment Paid By Airlines Purchases of property and equipment paid by commercial airlines Non-cash additions of property and equipment as paid for by our airline partners. Acquisition of intangible assets in non-current liabilities Represnts Acquisition of intangible assets in non-current liabilities Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Effect of exchange rate changes on cash Net Cash Provided by (Used in) Financing Activities [Abstract] Financing activities: Payments of Debt Issuance Costs Payment of debt issuance costs Proceeds from Convertible Debt Proceeds from issuance of convertible notes Proceeds received from the issuance of the convertible notes Proceeds from Notes Payable Proceeds from issuance of senior secured notes Proceeds from issuance of debt Payment On Amended And Restated Credit Agreement Payments on amended and restated credit agreement Payment on amended and restated credit agreement. Repayments of Long-term Capital Lease Obligations Payments on capital leases Stock Compensation Activity Stock-based compensation activity Cash inflows (outflows) related to stock-based compensation activity. Repayments of Convertible Debt Redemption of convertible notes Repayment of convertible notes Repurchase of convertible notes Net Cash Provided by (Used in) Financing Activities Net cash provided by financing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Investing activities: Net Cash Provided by (Used in) Investing Activities Net cash provided by (used in) investing activities Payments for (Proceeds from) Other Investing Activities Other, net Payments to Acquire Property, Plant, and Equipment Purchases of property and equipment Payments to Acquire Short-term Investments Purchases of short-term investments Acquisition of short-term investments Payments to Acquire Software Acquisition of intangible assets-capitalized software Proceeds from Sale of Short-term Investments Redemptions of short-term investments Redemption of short-term investments Net Cash Provided by (Used in) Operating Activities [Abstract] Operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to cash provided by (used in) operating activities: Amortization of Debt Issuance Costs Amortization of deferred financing costs Accretion (Amortization) of Discounts and Premiums, Investments Accretion and amortization of debt discount and premium Deferred Income Tax Expense (Benefit) Deferred income taxes Deferred Total Gain (Loss) on Disposition of Assets Loss on asset disposals, abandonments and write-downs Share-based Compensation Stock-based compensation expense Stock compensation expense Gain Loss On Transition To Airline Directed Model Gain on transition to airline-directed model Gain (loss) on transition to airline-directed model. Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Inventories Inventories Increase Decrease Deferred Airborne Lease Incentive Deferred airborne lease incentives The increase (decrease) during the reporting period of deferred airborne lease incentives. Increase (Decrease) in Accounts Payable Accounts payable Increase (Decrease) in Accounts Receivable Accounts receivable Increase (Decrease) In Accrued Interest Payable Accrued interest Increase (Decrease) In Accrued Interest Payable Increase (Decrease) in Accrued Liabilities Accrued liabilities Increase (Decrease) in Contract with Customer, Liability Deferred revenue Increase (Decrease) in Other Noncurrent Assets and Liabilities, Net Other non-current assets and liabilities Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other current assets Increase (Decrease) in Contract with Customer, Asset Contract assets Increase Decrease In Warranty Reserves Warranty reserves Increase decrease in warranty reserves. Net Cash Provided by (Used in) Operating Activities Net cash provided by (used in) operating activities Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss Supplemental Cash Flow Information [Abstract] Supplemental Cash Flow Information: Income Taxes Paid Cash paid for taxes Interest Paid, Excluding Capitalized Interest, Operating Activities Cash paid for interest Restricted Cash, Current Less: current restricted cash Restricted Cash, Noncurrent Less: non-current restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Loss [Member] Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Common Stock [Member] Common Stock [Member] Retained Earnings [Member] Accumulated Deficit [Member] Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Stock-based compensation expense Shares, Outstanding Beginning Balance, Shares Ending Balance, Shares Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Issuance of common stock upon vesting of restricted stock units and restricted stock awards, Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Issuance of common stock upon exercise of stock options, Shares Stock options exercised Number of Options, Exercised Stock Issued During Period, Value, Employee Stock Ownership Plan Issuance of common stock in connection with employee stock purchase plan Stock Issued During Period, Value, Stock Options Exercised Issuance of common stock upon exercise of stock options Tax Withholding Related To Vesting Of Restricted Stock Units Tax withholding related to vesting of restricted stock units Tax withholding related to vesting of restricted stock units. Stock Issued During Period, Shares, Employee Stock Ownership Plan Issuance of common stock in connection with employee stock purchase plan, Shares Impact of the adoption of ASC 606 AdjustmentsToAdditionalPaidInCapitalIssuanceOfConvertibleNotesIncludingIssuanceCost Issuance of 2022 Convertible Notes (including issuance costs) Adjustments to additional paid in capital issuance of convertible notes including issuance cost Accounting Policies [Abstract] Business Description and Basis of Presentation [Text Block] Background Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies Earnings Per Share [Abstract] Earnings Per Share [Text Block] Net Loss Per Share Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Revenue Recognition Organization, Consolidation and Presentation of Financial Statements [Abstract] Supplemental Balance Sheet Disclosures [Text Block] Composition of Certain Balance Sheet Accounts Goodwill and Intangible Assets Disclosure [Abstract] Intangible Assets Disclosure [Text Block] Intangible Assets Debt Disclosure [Abstract] Long-term Debt [Text Block] Long-Term Debt and Other Liabilities Text Block [Abstract] Interest Costs [Text Block] Interest Costs The entire disclosure for interest costs. Common And Preferred Stock [Text Block] Common Stock and Preferred Stock The entire disclosure for terms, amounts, nature of changes, rights and privileges, dividends, and other matters related to common stock and preferred stock. Fair Value Disclosures [Abstract] Fair Value Disclosures [Text Block] Fair Value of Financial Assets and Liabilities Segment Reporting [Abstract] Segment Reporting Disclosure [Text Block] Business Segments and Major Customers Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Stock-Based Compensation Retirement And Post Retirement Benefits [Text Block] Employee Retirement and Postretirement Benefits The entire disclosure for retirement benefits including defined contribution plans (401(k)), director compensation, and share-based compensation. Income Tax Disclosure [Abstract] Income Tax Disclosure [Text Block] Income Tax