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[Member] Investment Investment Fund, Maximum Exposure Loss Limit Investment Fund, Maximum Exposure Loss Limit Anti-dilutive potential common stock excluded (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] All Adjustments to Compensation All Adjustments to Compensation [Member] Amendment Flag Amendment Flag Schedule of Intangible Assets Acquired, Net Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block] Termination Date Trading Arrangement Termination Date Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Number of equity compensation plans Share-Based Payment Arrangement, Number Of Plans Share-Based Payment Arrangement, Number Of Plans Basic (in shares) Weighted-average shares used in computing net income (loss) per share—Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Stock repurchase program, remaining authorized repurchase amount Share Repurchase Program, Remaining Authorized, Amount Disposal Group Classification [Domain] Disposal Group Classification [Domain] Schedule of Basic and Diluted Net Income (Loss) Per Share Attributable to Common Stockholders Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Related Party Transaction [Domain] Related Party Transaction [Domain] Segment Reporting [Abstract] Cost of revenue Cost of Revenue Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Revenue From Equity Method Investee Revenue From Equity Method Investee [Member] Revenue From Equity Method Investee Entity Tax Identification Number Entity Tax Identification Number Purchase price adjustments Proceeds From Divestiture Of Businesses, Purchase Price Adjustments Proceeds From Divestiture Of Businesses, Purchase Price Adjustments Costs and expenses: Costs and Expenses [Abstract] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares issued (in shares) Common Stock, Shares, Issued Goodwill and Intangible Assets, Net Goodwill and Intangible Assets Disclosure [Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Schedule of Goodwill Activity Schedule of Goodwill [Table Text Block] Interest expense Interest expense Interest Expense, Nonoperating Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Foreign currency translation adjustment, net of tax Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Insider Trading Arrangements [Line Items] Security Exchange Name Security Exchange Name Total liabilities Liabilities Investment fund, term Investment Fund, Term Investment Fund, Term Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Indefinite-Lived Intangible Assets, Major Class Name [Domain] Indefinite-Lived Intangible Assets, Major Class Name [Domain] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Asset Class [Domain] Asset Class [Domain] Statement [Line Items] Statement [Line Items] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Cash and Cash Equivalent Counterparty Name [Axis] Counterparty Name [Axis] Less: net decrease in cash from discontinued operations Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect, Discontinued Operation Common Stock Common Stock [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Net increase (decrease) in cash and cash equivalents, including cash from discontinued operations Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Weighted-average dilutive stock awards (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment