Document and Entity Information Statement [Table] Statement [Line Items] Components of (loss) income before income taxes Entity Registrant Name Entity Central Index Key Document Type Document Period End Date Amendment Flag Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Public Float Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Period Focus CONDENSED CONSOLIDATED BALANCE SHEETS Debt Instrument [Axis] Debt Instrument Name [Domain] Debt Instrument, Name [Domain] Represents Senior secured 2022 notes Senior Secured2022 Notes [Member] Senior Secured 2022 Notes Member Represents Senior secured 2018 notes Senior Secured2018 Notes [Member] Senior Secured 2018 Notes Member Assets [Abstract] Assets Assets, Current [Abstract] Current assets: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents, end of period Cash and cash equivalents, beginning of period Cash and cash equivalents Accounts Receivable, Net, Current Accounts receivable, net of allowance for doubtful accounts of $1,757 and $1,707, respectively Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Assets, Current Total current assets Property, Plant and Equipment, Net [Abstract] Property and equipment: Property, Plant and Equipment, Gross Property and equipment Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated depreciation and amortization Property, Plant and Equipment, Net Total property and equipment, net Net book value Deferred Tax Assets, Net, Noncurrent Deferred tax assets - noncurrent This element represents the carrying value of amounts transferred to third parties for security purposes, that are expected to be returned or applied towards payment in the future, which also includes other assets and restricted assets, which are expected to be realized after one year. Deposits and Other Assets Noncurrent Deposits and other assets ($355 and $389 restricted, respectively) Assets Total assets Liabilities and Equity [Abstract] Liabilities and stockholders' equity Liabilities, Current [Abstract] Current liabilities: Accounts Payable, Current Accounts payable Accrued Liabilities, Current Accrued and other current liabilities Amount of the recorded unconditional purchase obligation maturing within one year or the normal operating cycle, if longer. Recorded Unconditional Purchase Obligation, Current Portion Installment payment agreement, current portion, net of discount of $678 Capital Lease Obligations, Current Current maturities Current maturities, capital lease obligations Liabilities, Current Total current liabilities Unsecured Long-term Debt, Noncurrent Senior unsecured 2021 notes Senior unsecured notes Senior Notes, Noncurrent Senior secured notes Capital Lease Obligations, Noncurrent Capital lease obligations, net of current maturities Capital lease obligations, net of current maturities Other Liabilities, Noncurrent Other long term liabilities Liabilities Total liabilities Commitments and Contingencies. Commitments and contingencies: Stockholders' Equity Attributable to Parent [Abstract] Stockholders' equity: Common Stock, Value, Issued Common stock, $0.001 par value; 75,000,000 shares authorized; 45,198,718 and 46,398,729 shares issued and outstanding, respectively Additional Paid in Capital, Common Stock Additional paid-in capital Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income Retained Earnings (Accumulated Deficit) Accumulated deficit Stockholders' Equity Attributable to Parent Balance Balance Total stockholders' (deficit) equity Liabilities and Equity Total liabilities and stockholders' equity Allowance for Doubtful Accounts Receivable, Current Accounts receivable, allowance for doubtful accounts (in dollars) This element represents the noncurrent deposits and other assets that are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits classified as long-term. Deposits and Other Restricted Assets Noncurrent Deposits and other assets, restricted (in dollars) Discount on the recorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices Recorded Unconditional Purchase Obligation, Discount Installment payment agreement, discount Unamortized Debt Issuance Expense Unamortized debt costs Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Balance (in shares) Balance (in shares) Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Revenue, Net Net revenue Service revenue Costs and Expenses [Abstract] Operating expenses: Cost of Services Network operations, including equity-based compensation expense, respectively, exclusive of amounts shown separately) Network operations (including $584, $488 and $507 of equity-based compensation expense, respectively), exclusive of amounts shown separately Selling, General and Administrative Expense Selling, general, and administrative (including $10,931, $9,083 and $8,212 of equity-based compensation expense, respectively) Depreciation, Depletion and Amortization Depreciation and amortization Depreciation and amortization expense Costs and Expenses Total operating expenses Gain (Loss) on Disposition of Property Plant Equipment Gains on equipment transactions Gain (Loss) on Sale of Capital Leases, Net Gains on Lease terminations Gain on lease obligations Gain on Lease termination Gains (Losses) on Extinguishment of Debt Loss on Debt extinguishment and redemption Loss on Debt extinguishment and redemption Operating Income (Loss) Operating income Operating income Interest and Other Income Interest income and other Interest Expense Interest expense Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Income before income taxes Income Tax Expense (Benefit) Income tax (expense) benefit Total income before income taxes Net Income (Loss) Available to Common Stockholders, Basic Net income Net income Net income Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Comprehensive income (loss) Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Foreign currency translation adjustment Foreign currency translation Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive (loss) income Earnings Per Share [Abstract] Net income (loss) per common share: Basic net income per common share Net income (loss) per common share-basic (in dollars per share) Diluted net income per common share Net income (loss) per common share-diluted (in dollars per share) Common Stock, Dividends, Per Share, Declared Dividends declared per common share (in dollars per share) Weighted Average Number of Shares Outstanding, Basic Weighted-average number of common shares-basic Weighted-average common shares - basic (in shares) Weighted Average Number of Shares Outstanding, Diluted Weighted-average common shares - diluted (in shares) Weighted average common shares-diluted Weighted-average number of common shares-diluted This element represents the expenses related to equity based compensation, which includes network operations, during the reporting period by the entity. Network Operations Include Equity Based Compensation Expense Network operations, equity-based compensation expense This element represents the expenses related to equity based compensation, which includes selling, general and administrative expenses, during the reporting period by the entity. Selling, General and Administrative Expenses Include Equity Based Compensation Expense Selling, general, and administrative, equity-based compensation expense CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock [Member] Common stock Additional Paid In Capital [Member] Additional Paid-in Capital Accumulated Translation Adjustment [Member] Accumulated Other Comprehensive Income Retained Earnings [Member] Accumulated Deficit Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity Stock Granted, Value, Share-based Compensation, Forfeited Forfeitures of shares granted to employees Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Forfeitures of shares granted to employees (in shares) Cancelled and expired (in shares) Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Equity-based compensation Stock Issued During Period, Value, New Issues Issuances of common stock Stock Issued During Period, Shares, New Issues Issuances of common stock (in shares) Stock Issued During Period, Value, Stock Options Exercised Exercises of options Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Exercised (in shares) Exercises of options (in shares) Stock Repurchased and Retired During Period, Value Common stock purchases and retirement Stock Repurchased and Retired During Period, Shares Common stock purchases and retirement (in shares) Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation Excess income tax benefit Adjustments to Additional Paid in Capital, Income Tax Deficiency from Share-based Compensation Excess income tax deficiency Dividends, Common Stock, Cash Dividends paid Dividends paid CONSOLIDATED STATEMENTS OF CASH FLOWS Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Cash flows from operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Amortization of Debt Discount (Premium) Amortization of debt discount and premium Share-based Compensation Equity-based compensation expense (net of amounts capitalized) Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Gain-equipment transactions and other, net Deferred Income Tax Expense (Benefit) Deferred Income Tax Expense (Benefit) Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Accounts Receivable Accounts receivable Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other current assets This element represents the increase decrease in the carrying value of amounts transferred to third parties for security purposes, that are expected to be returned or applied towards payment in the future, which also includes other assets and restricted assets. Increase (Decrease) in Deposits and Other Assets Deposits and other assets Increase (Decrease) in Operating Liabilities Accounts payable, accrued liabilities and other long-term liabilities Net Cash Provided by (Used in) Operating Activities, Continuing Operations Net cash provided by operating activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Cash flows from investing activities: Payments to Acquire Property, Plant, and Equipment Purchases of property and equipment Proceeds from Sale of Productive Assets Proceeds from asset sales Net Cash Provided by (Used in) Investing Activities, Continuing Operations Net cash used in investing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Cash flows from financing activities: Proceeds from Issuance of Secured Debt Net proceeds from issuance of senior secured notes - net of debt costs Proceeds from Issuance of Unsecured Debt Net proceeds from issuance of 2021 unsecured notes - net of debt costs of $4,176 Repayments of Secured Debt Redemption of 2018 notes Amount of debt redeemed Repayments of Convertible Debt Repayment of convertible senior notes Purchase of convertible notes in cash Payments of Dividends Dividends paid Expected value of dividend to be paid Repayments of Long-term Capital Lease Obligations Principal payments of capital lease obligations Repayments of Long-term Debt Principal payments of installment payment agreement Payments for Repurchase of Common Stock Purchases of common stock Proceeds from Stock Options Exercised Proceeds from exercises of stock options Net Cash Provided by (Used in) Financing Activities, Continuing Operations Net cash (used in) provided by financing activities Effect of Exchange Rate on Cash and Cash Equivalents, Continuing Operations Effect of exchange rates changes on cash Cash and Cash Equivalents, Period Increase (Decrease) Net (decrease) increase in cash and cash equivalents Supplemental Cash Flow Information [Abstract] Supplemental disclosure of cash flow information: Interest Paid Cash paid for interest Income Taxes Paid Cash paid for income taxes Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Non-cash investing and financing activities: Capital Lease Obligations Incurred Capital lease obligations incurred Noncash or Part Noncash Acquisition, Value of Assets Acquired PP&E obtained for installment payment agreement Fair Value of Assets Acquired Fair value of equipment acquired in leases Represents the gain (loss) resulted from asset exchange transactions. Gain (Loss) on Asset Exchange Transactions Non-cash component of network equipment obtained in exchange transactions Payments of Debt Issuance Costs Debt issuance costs Net of debt costs Description of the business and summary of significant accounting policies: Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Description of the business and recent developments: Property and equipment: Property, Plant and Equipment Disclosure [Text Block] Property and equipment: Accrued and other liabilities: Accounts Payable and Accrued Liabilities Disclosure [Text Block] Accrued and other liabilities: Long-term debt: Long-term Debt [Text Block] Long-term debt: Income taxes: Income Tax Disclosure [Text Block] Income taxes: Commitments and contingencies: Commitments and Contingencies Disclosure [Text Block] Commitments and contingencies: Stockholders' equity: Stockholders' Equity Note Disclosure [Text Block] Stockholders' equity: Stock option and award plan: Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Stock option and award plan: Related party transactions: Related Party Transactions Disclosure [Text Block] Related party transactions: Geographic information: Segment Reporting Disclosure [Text Block] Geographic information: Quarterly financial information (unaudited): Quarterly Financial Information [Text Block] Quarterly financial information (unaudited): Subsequent Events: Subsequent Events [Text Block] Subsequent Events: Schedule II VALUATION AND QUALIFYING ACCOUNTS Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] Schedule II VALUATION AND QUALIFYING ACCOUNTS Consolidation, Policy [Policy Text Block] Principles of consolidation Use of Estimates, Policy [Policy Text Block] Use of estimates Disclosure of entity's accounting policy for revenue recognition and allowance for doubtful accounts. Revenue Recognition and Allowance for Doubtful Accounts [Policy Text Block] Revenue recognition and allowance for doubtful accounts Revenue Recognition Accounting Policy, Gross and Net Revenue Disclosure [Policy Text Block] Gross receipts taxes, universal service fund and other surcharges Cost of Sales, Policy [Policy Text Block] Network operations Foreign Currency Transactions and Translations Policy [Policy Text Block] Foreign currency translation adjustment and comprehensive income (loss) Fair Value of Financial Instruments, Policy [Policy Text Block] Financial instruments Concentration Risk, Credit Risk, Policy [Policy Text Block] Concentrations of credit risk Property, Plant and Equipment, Policy [Policy Text Block] Property and equipment Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block] Long-lived assets Asset Retirement Obligations, Policy [Policy Text Block] Asset retirement obligations Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Equity-based compensation Income Tax, Policy [Policy Text Block] Income taxes Earnings Per Share, Policy [Policy Text Block] Basic and diluted net (loss) income per common share New Accounting Pronouncements, Policy [Policy Text Block] Recent accounting pronouncements Recent accounting pronouncements- adopted Recent accounting pronouncements- adopted Tabular disclosure of period of depreciation or amortization of property, plant and equipment. Schedule of Property, Plant and Equipment Depreciation of Amortization Period [Table Text Block] Schedule of depreciation and amortization periods Schedule of Weighted Average Number of Shares [Table Text Block] Schedule of diluted weighted average shares Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Schedule of unvested and antidiluted shares Schedule of Prospective Adoption of New Accounting Pronouncements [Table Text Block] Schedule of Prospective Adoption of New Accounting Pronouncements Property, Plant and Equipment [Table Text Block] Schedule of property and equipment Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Schedule of accrued and other current liabilities