Restatement Determination Date Restatement Determination Date Prepaid Expense, Noncurrent Prepaid Expense, Noncurrent Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Adoption Date Trading Arrangement Adoption Date Remaining common stock available for repurchase Share Repurchase Program, Remaining Authorized, Amount Cash, Cash Equivalents, And Marketable Securities Cash, Cash Equivalents and Investments [Table Text Block] Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Trading Symbol Trading Symbol Statutory federal rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Schedule of Other Current Assets [Table Text Block] Schedule of Other Current Assets [Table Text Block] All Trading Arrangements All Trading Arrangements [Member] Exercise Price Award Exercise Price Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Non-NEOs Non-NEOs [Member] Restricted Cash Equivalents, Noncurrent Restricted Cash Equivalents, Noncurrent Calculation Of Net Income Per Share Attributable To Verisign Stockholders Earnings Per Share [Text Block] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Arrangement Duration Trading Arrangement Duration Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Cash paid for income taxes, net of refunds received Income Taxes Paid, Net Stock Issued During Period, Value, Employee Stock Purchase Plan Stock Issued During Period, Value, Employee Stock Purchase Plan Costs and expenses: Costs and Expenses [Abstract] Income (Loss) from Continuing Operations, Per Basic Share Net Income Income (Loss) from Continuing Operations, Per Basic Share Nature Of Total Stock-Based Compensation Share-Based Payment Arrangement, Cost by Plan [Table Text Block] Stockholders' deficit: Equity, Attributable to Parent [Abstract] Pay vs Performance Disclosure [Line Items] Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Basis Of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] All Individuals All Individuals [Member] Award Timing Disclosures [Line Items] Treasury Stock Shares Repurchased for Tax Withholding and Other Treasury Stock Shares Repurchased for Tax Withholding and Other Treasury Stock Shares Repurchased for Tax Withholding and Other Other Performance Measure, Amount Other Performance Measure, Amount PEO PEO [Member] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Common stock, outstanding shares Common Stock, Shares, Outstanding Debt Instrument, Fair Value Disclosure Debt Instrument, Fair Value Disclosure Name Trading Arrangement, Individual Name Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Total long-term assets Assets, Noncurrent US [Member] UNITED STATES Interest Payable Interest Payable Proceeds from employee stock purchase plans Proceeds, Issuance of Shares, Share-Based Payment Arrangement, Including Option Exercised Other long-term assets Other Assets, Noncurrent Other Assets, Noncurrent Entity Tax Identification Number Entity Tax Identification Number Common stock repurchase, share Treasury Stock, Shares, Acquired Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Treasury stock shares repurchased, average cost per share Treasury stock Shares Repurchased, Average Cost Per Share Treasury stock Shares Repurchased, Average Cost Per Share Total long-term liabilities Liabilities, Noncurrent Accounts payable and accrued liabilities Total accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities, Current Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount customer incentives payable customer incentives payable customer incentives payable Income Taxes Receivable Income Taxes Receivable Equity Components [Axis] Equity Components [Axis] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Other Assets, Current Other Assets, Current Other Assets, Current Award Timing Method Award Timing Method [Text Block] Local Phone Number Local Phone Number Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Other Assets, Miscellaneous, Current Other Assets, Miscellaneous, Current Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Total repurchases for tax withholdings and other, average cost per share Total repurchases for tax withholdings and other, average cost per share Total repurchases for tax withholdings and other, average cost per share Revenue Recognition and Deferred Revenue [Abstract] Revenue Recognition and Deferred Revenue [Abstract] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Common Stocks, Including Additional Paid in Capital Common Stocks, Including Additional Paid in Capital Insider Trading Policies and Procedures [Line Items] Share-based Payment Arrangement, Amount Capitalized Share-Based Payment Arrangement, Amount Capitalized Total costs and expenses Costs and Expenses Adjustment to Compensation, Amount Adjustment to Compensation Amount Changes in operating assets and liabilities Increase (Decrease) in Operating Capital [Abstract] Payables and Accruals [Abstract] Compensation Amount Outstanding Recovery Compensation Amount Diluted income (loss) per share Earnings Per Share, Diluted [Abstract] PEO Total Compensation Amount PEO Total Compensation Amount Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Entity Small Business Entity Small Business Company Selected Measure Amount Company Selected Measure Amount Geographical [Axis] Geographical [Axis] Tabular List, Table Tabular List [Table Text Block] Investment Income, Interest and Dividend Investment Income, Interest and Dividend Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Axis] Statement of Income Location, Balance [Axis] Schedule of Common Stock Repurchase Schedule of Common Stock Repurchase [Table Text Block] Schedule of Common Stock Repurchase Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] EMEA [Member] EMEA [Member] Stock Repurchased During Period, Value Stock Repurchased During Period, Value Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Schedule of Other Assets, Noncurrent [Table Text Block] Schedule of Other Assets, Noncurrent [Table Text Block] Measure: Measure [Axis] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Preferred stock, authorized shares Preferred Stock, Shares Authorized Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Entity Emerging Growth Company Entity Emerging Growth Company Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, end of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Time deposits Time Deposits, at Carrying Value Entity Central Index Key Entity Central Index Key Scenario [Axis] Scenario [Axis] Selling, General And Administrative [Member] General and Administrative Expense [Member] Current assets: Assets, Current [Abstract] Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document and Entity Information [Abstract] Goodwill Goodwill Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Common stock authorized to repurchase Share Repurchase Program, Authorized, Amount Components Of Accounts Payable And Accrued Liabilities Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Treasury Stock, Common, Shares Treasury Stock, Common, Shares Share-based Payment Arrangement, Noncash Expense [Abstract] Share-Based Payment Arrangement, Noncash Expense [Abstract] Stockholders' (Deficit) Equity Equity [Text Block] Other Liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Equity Component [Domain] Equity Component [Domain] Preferred stock, par value Preferred Stock, Par or Stated Value Per Share Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Employee Stock Option Share-Based Payment Arrangement, Option [Member] Deposits Customer Deposits, Current Schedule of Available-for-sale Securities [Table] Debt Securities, Available-for-Sale [Table] Marketable securities Included in Marketable securities Marketable Securities, Current Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Stock-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Entity Shell Company Entity Shell Company Comprehensive Income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Preferred stock, outstanding shares Preferred Stock, Shares Outstanding Title Trading Arrangement, Individual Title Danny McPherson [Member] Danny McPherson Deferred Income Taxes and Other Liabilities, Noncurrent Deferred Income Taxes and Other Tax Liabilities, Noncurrent Security Exchange Name Security Exchange Name Statement [Table] Statement [Table] Award Type [Axis] Award Type [Axis] Taxes Payable Taxes Payable Basic income (loss) per share Earnings Per Share, Basic [Abstract] City Area Code City Area Code Deferred Revenue, Revenue Recognized Deferred Revenue, Revenue Recognized Current liabilities: Liabilities, Current [Abstract] Property and equipment, net Property, Plant and Equipment, Net Treasury stock, value, repurchased for tax withholding Treasury stock, value, repurchased for tax withholding Treasury stock, value, repurchased for tax withholding Total liabilities Liabilities Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activities accrued fees accrued fees accrued registry fees Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Foreign Currency Contracts, Liability, Fair Value Disclosure Foreign Currency Contracts, Liability, Fair Value Disclosure Other Assets, Miscellaneous, Noncurrent Other Assets, Miscellaneous, Noncurrent Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Common Stock Including Additional Paid in Capital [Member] Common Stock Including Additional Paid in Capital [Member] Common stock, par value Common Stock, Par or Stated Value Per Share Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Research and development Research and Development Expense Total current assets Assets, Current Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Expiration Date Trading Arrangement Expiration Date Net Cash Provided by (Used in) Investing Activities [Abstract] Net Cash Provided by (Used in) Investing Activities [Abstract] Revision of Prior Period [Domain] Revision of Prior Period [Domain] Payments for Repurchase of Common Stock Payments for Repurchase of Common Stock Operating Lease, Liability, Current Operating Lease, Liability, Current Total Shareholder Return Amount Total Shareholder Return Amount Common Stock, Shares, Issued Common Stock, Shares, Issued Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Income Taxes Income Tax Disclosure [Text Block] Earnings Per Share [Abstract] Earnings Per Share [Abstract] Equity [Abstract] Accumulated deficit Retained Earnings (Accumulated Deficit) Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Other Nonoperating Income and Expense Other Nonoperating Income and Expense [Text Block] Class of Stock [Domain] Class of Stock [Domain] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Research And Development [Member] Research and Development Expense [Member] Investment Income, Amortization of Discount Investment Income, Amortization of Discount Common stock, authorized shares Common Stock, Shares Authorized Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Equity Awards Adjustments Equity Awards Adjustments [Member] Long-term Operating Lease Liabilities Long-term Operating Lease Liabilities Long-term Operating Lease Liabilities Diluted Shares used to compute diluted net income per share Weighted Average Number of Shares Outstanding, Diluted Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Underlying Securities Award Underlying Securities Amount Performance Shares [Member] Performance Shares [Member] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Deferred revenues Deferred Revenue, Current Total stockholders' deficit Stockholders' Deficit Equity, Attributable to Parent Common stock repurchased Treasury Stock, Value Amendment Flag Amendment Flag Entity Registrant Name Entity Registrant Name Financial Instruments Financial Instruments Disclosure [Text Block] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Fair Value as of Grant Date Award Grant Date Fair Value Selling, General and Administrative Expense Selling, General and Administrative Expense Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Geographical [Domain] Geographical [Domain] Accounts Receivable, Net Accounts Receivable, after Allowance for Credit Loss, Current Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Cost Of Revenues [Member] Cost of Sales [Member] Disaggregation of Revenue [Table Text Block] Disaggregation of Revenue [Table Text Block] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Other [Member] Other [Member] Other [Member] Classification Of Stock-Based Compensation Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Document Fiscal Period Focus Document Fiscal Period Focus Restatement Determination Date: Restatement Determination Date [Axis] All Executive Categories All Executive Categories [Member] Title of 12(b) Security Title of 12(b) Security Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] ASSETS Assets [Abstract] Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Other Comprehensive Income (Loss), Net of Tax Document Type Document Type Cash and cash equivalents Included in Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Average stock price Shares Acquired, Average Cost Per Share Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Other Income and Expenses [Abstract] Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Preferred stock-par value $.001 per share Preferred Stock, Value, Issued Proceeds from maturities and sales of marketable securities Proceeds from Sale, Maturity and Collection of Investments Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Employee Stock Purchase Plan [Member] Employee Stock [Member] Depreciation of property and equipment Depreciation, Depletion and Amortization, Nonproduction Deposits to acquire Intangible Assets Deposits Assets, Noncurrent Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Current Fiscal Year End Date Current Fiscal Year End Date Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] prepaid registry fees, non current prepaid registry fees, non current prepaid registry fees, non current PEO Name PEO Name Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Income (Loss) before Income Taxes, Total Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Total current liabilities Liabilities, Current Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Award Type [Domain] Award Type [Domain] Total assets Assets Name Outstanding Recovery, Individual Name Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Money Market Funds (level 1) Money Market Funds, at Carrying Value Revision of Prior Period [Axis] Revision of Prior Period [Axis] Other long-term liabilities Other Liabilities, Noncurrent Other Liabilities, Noncurrent Deferred Income Tax Assets, Net Deferred Income Tax Assets, Net Non-PEO NEO Non-PEO NEO [Member] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Share-based Payment Arrangement, Expensed and Capitalized, Amount Share-Based Payment Arrangement, Expensed and Capitalized, Amount Commitments and contingencies Commitments and Contingencies Senior Notes Senior Notes, Noncurrent Award Timing Predetermined Award Timing Predetermined [Flag] Operating lease ROU Operating lease ROU Operating lease ROU Termination Date Trading Arrangement Termination Date Unvested RSUs and ESPP Incremental Common Shares Attributable to Dilutive Effect of Nonvested Shares with Forfeitable Dividends Additional share repurchase amount authorized Additional share repurchase amount authorized Additional share repurchase amount authorized Revenues Revenues Revenues Class of Stock [Axis] Class of Stock [Axis] Stock-Based Compensation Share-Based Payment Arrangement [Text Block] Schedule of Weighted Average Number of Shares [Table Text Block] Schedule of Weighted Average Number of Shares [Table Text Block] Name Measure Name Entity Interactive Data Current Entity Interactive Data Current Entity Address, City or Town Entity Address, City or Town Accrued employee compensation Accrued Employee Benefits, Current Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Total Cash, Cash Equivalents, and Short-Term Investments Treasury Stock Shares Repurchased Treasury Stock Shares Repurchased Treasury Stock Shares Repurchased Revenue Recognition [Abstract] Revenue Recognition [Abstract] Net Income Net Income (Loss) Attributable to Parent Net Income (Loss) Attributable to Parent Preferred stock, issued shares Preferred Stock, Shares Issued Trading Arrangement: Trading Arrangement [Axis] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] China [Member] CHINA Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Stock-based compensation Share-Based Payment Arrangement, Noncash Expense Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Net Income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Entity File Number Entity File Number Cash, Cash Equivalents And Marketable Securities [Abstract] Cash, Cash Equivalents And Marketable Securities [Abstract] Cash, Cash Equivalents, And Marketable Securities [Abstract] Non-operating income (loss), net Nonoperating Gains (Losses) Income tax expense Income tax expense from continuing operations Income Tax Expense (Benefit) Revenue from Contract with Customer [Table Text Block] Revenue from Contract with Customer [Text Block] Document Fiscal Year Focus Document Fiscal Year Focus Financial Instruments, Owned, US Government and Agency Obligations, at Fair Value Financial Instruments, Owned, US Government and Agency Obligations, at Fair Value Income Tax Expense From Continuing Operations And The Effective Tax Rate Schedule of Effective Income Tax Rate and Expenses [Table Text Block] Schedule of Effective Income Tax Rate and Expenses [Table Text Block] Income Statement [Abstract] Income Statement [Abstract] Entity Address, Address Line One Entity Address, Address Line One Aggregate cost of share Treasury Stock, Value, Acquired, Cost Method Shares used to compute net income per share Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Supplemental cash flow disclosures: Supplemental Cash Flow Information [Abstract] Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Continuing Operations Financial Instruments, Owned, at Fair Value, by Type, Alternative [Abstract] Other accrued liabilities Other Accrued Liabilities, Current Name Forgone Recovery, Individual Name Document Period End Date Document Period End Date Long-term deferred revenues Deferred Revenue, Noncurrent Deferred Income Taxes Increase (Decrease) in Deferred Income Taxes Other Noncash Income (Expense) Other Noncash Income (Expense) Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Cash Cash Equivalents, at Carrying Value Deferred revenues Increase (Decrease) in Deferred Revenue Insider Trading Arrangements [Line Items] Effective tax rate Effective Income Tax Rate Reconciliation, Percent Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Operating income Operating Income (Loss) Other Balance Sheet Items Supplemental Balance Sheet Disclosures [Text Block] Interest expense Interest Expense, Operating and Nonoperating Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Total liabilities and stockholders' deficit Liabilities and Equity All Adjustments to Compensation All Adjustments to Compensation [Member] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Other assets Increase (Decrease) in Prepaid Expense and Other Assets PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Income (Loss) from Continuing Operations, Per Diluted Share Net Income Income (Loss) from Continuing Operations, Per Diluted Share Cost of revenues Cost of Revenue Adjustment to Compensation: Adjustment to Compensation [Axis] Document Transition Report Document Transition Report Document Quarterly Report Document Quarterly Report Prepaid registry fees, current Prepaid registry fees, current Prepaid registry fees Excise tax on repurchase of common stock Excise tax on repurchase of common stock Excise tax on repurchase of common stock Underlying Security Market Price Change Underlying Security Market Price Change, Percent Scenario [Domain] Scenario [Domain] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Current Reporting Status Entity Current Reporting Status Individual: Individual [Axis] Accumulated Deficit [Member] Retained Earnings [Member] Other Noncurrent Liabilities [Table Text Block] Other Noncurrent Liabilities [Table Text Block] AOCI Attributable to Parent [Member] AOCI Attributable to Parent [Member] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Restricted Cash Restricted Cash Balance Sheet Related Disclosures [Abstract] Balance Sheet Related Disclosures [Abstract] Basic Weighted-average number of common shares outstanding Weighted Average Number of Shares Outstanding, Basic Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Address, State or Province Entity Address, State or Province Statement [Line Items] Statement [Line Items] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Restricted Stock Units [Member] Restricted Stock Units (RSUs) [Member] Accounts payable Accounts Payable, Trade, Current Executive Category: Executive Category [Axis] Purchases of marketable securities Payments to Acquire Investments Name Awards Close in Time to MNPI Disclosures, Individual Name Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Prepaid Expense Prepaid Expense Entity Filer Category Entity Filer Category Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Report Line [Domain] Statement of Income Location, Balance [Domain] Company Selected Measure Name Company Selected Measure Name