Accounting Policies [Abstract] Accounting Policies [Abstract] Accounts Payable, Current Accounts payable Accounts Receivable [Member] Consolidated Accounts Receivable Accounts Receivable, Net, Current Accounts receivable, net Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less: accumulated depreciation and amortization This element represents acquisition and disposition related costs incurred for which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. Acquisition And Disposition Related Costs Acquisition and disposition related costs Additional Paid in Capital, Common Stock Additional paid-in capital Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (loss) to net cash provided by operating activities: Advertiser B. Advertiser B [Member] Advertiser B Advertiser C [Member] Advertiser C [Member] Advertiser C Advertiser A. Advertiser [Member] Advertiser A Allocated Share-based Compensation Expense Total stock-based compensation Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables to an amount that approximates their net realizable value (the amount expected to be collected). Includes amounts offset against current period revenue, the offset which is generally to the revenue allowance reserve. Allowance For Doubtful Accounts And Advertiser Credits Allowance for doubtful accounts and advertiser credits Amended Credit Facility [Member] Amended Credit Facility [Member] Amended Credit Agreement Amendment Flag Amendment Flag Amortization of Intangible Assets Amortization of intangible assets from acquisitions Amortization expense Amortization of intangible asset included in service costs Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Anti-dilutive shares Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Archeo [Member] Archeo [Member] Archeo Archeo's Pay-Per-Click Advertising Services And Archeo's Domain Operations [Member] Archeo's Pay-Per-Click Advertising Services And Archeo's Domain Operations [Member] Archeo's Pay-Per-Click Advertising Services and Archeo's Domain Operations Assets Total assets Assets [Abstract] Assets Assets, Current Total current assets Assets, Current [Abstract] Current assets: Award Type [Axis] Award Type [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition [Member] Business Acquisition [Member] Business Acquisition CANADA Canada Call Driven [Member] Call Driven [Member] Call Driven Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Net increase in cash and cash equivalents Class of Stock [Domain] Class of Stock [Domain] Class of Treasury Stock [Table] Class of Treasury Stock [Table] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Text Block] Commitments Common Class A [Member] Class A Common Class B [Member] Class B Common Stock, Dividends, Per Share, Cash Paid Dividends paid per share Common Stock, Value, Outstanding Common stock Components Of Deferred Tax Assets And Liabilities [Line Items] Components Of Deferred Tax Assets And Liabilities [Line Items] Components Of Deferred Tax Assets And Liabilities [Line Items] Components Of Deferred Tax Assets And Liabilities [Table] Components Of Deferred Tax Assets And Liabilities [Table] Components Of Deferred Tax Assets And Liabilities [Table] Computer Equipment [Member] Computer and Other Related Equipment Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Disclosure [Text Block] Concentrations Concentration Risk [Line Items] Concentration Risk [Line Items] Concentration Risk, Percentage Concentration Risk, Percentage Revenue by geographic region Concentration Risk [Table] Concentration Risk [Table] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Contractual Obligation Total minimum payments Contractual Obligation, Due in Fifth Year and Thereafter Contractual Obligation, Due in Fifth Year and Thereafter Total 2019 and after Contractual Obligation, Due in Fourth Year Total 2018 Contractual Obligation, Due in Second Year Total 2016 Contractual Obligation, Due in Third Year Total 2017 Contractual Obligation, Future Minimum Payments Due, Remainder of Fiscal Year Total 2015 Cost of Services Service costs Costs and Expenses Operating expenses Total operating expenses Costs and Expenses [Abstract] Expenses: Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Current Fiscal Year End Date Current Fiscal Year End Date Customer Concentration Risk [Member] Customer Concentration Risk Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Text Block] Credit Agreement Deferred Income Tax Expense (Benefit) Deferred income taxes Deferred Revenue, Current Deferred revenue Deferred Tax Assets, Gross Deferred tax assets Deferred Tax Assets, Valuation Allowance, Percentage Deferred Tax Assets, Valuation Allowance, Percentage Percentage of valuation allowance Depreciation, Depletion and Amortization, Nonproduction Amortization and depreciation Depreciation, Depletion and Amortization Depreciation and amortization expense Diluted Net Income Loss From Discontinued Operations Available For Class Common Shareholders Diluted Net Income Loss From Discontinued Operations Available For Class Common Shareholders Discontinued operations, net of tax Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Stock-based Compensation Plans Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax Gain on sale of discontinued operations Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax Gain on sale of discontinued operations, net of tax Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, before Income Tax Income from discontinued operations before provision for income taxes Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax Income from discontinued operations, net of tax Discontinued Operations and Disposal Groups [Abstract] Discontinued Operations and Disposal Groups [Abstract] Discontinued Operation, Tax Effect of Income (Loss) from Discontinued Operation During Phase-out Period Income tax expense (benefit) Disposal Group Including Discontinued Operation Costs Of Services Disposal Group Including Discontinued Operation Costs Of Services Service costs Disposal Group, Including Discontinued Operation, Depreciation and Amortization Discontinued operation, amortization expenses Disposal Group, Including Discontinued Operation, Expenses [Abstract] Disposal Group, Including Discontinued Operation, Expenses [Abstract] Expenses: Disposal Group, Including Discontinued Operation, Revenue Revenue Disposal Group Including Discontinued Operation Sales And Marketing Expenses Disposal Group Including Discontinued Operation Sales And Marketing Expenses Sales and marketing Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Discontinued Operations Disposal Group Name [Domain] Disposal Group Name [Domain] Dividends [Axis] Dividends [Axis] Dividends, Common Stock Dividend paid Dividends [Domain] Dividends [Domain] Aggregate cash, stock, and paid-in-kind dividends paid for participating securities during the period. Dividends Paid To Participating Securities Dividends paid to participating securities Dividends Payable, Date of Record Date of record Document and entity information. Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Information [Line Items] Document Information [Line Items] Document Information [Table] Document Information [Table] Document Period End Date Document Period End Date Document Type Document Type Earnings Per Share [Abstract] Basic and diluted net income (loss) per share applicable to Class A and Class B common stockholders: Earnings Per Share, Basic Basic net income (loss) per share applicable to common stockholders Earnings Per Share, Basic [Abstract] Basic net income (loss) per share: Earnings Per Share, Basic and Diluted Basic and diluted net income (loss) per share applicable to Class A and Class B common stockholders Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Basic, Other Disclosures [Abstract] Shares used to calculate basic net income (loss) per share applicable to common stockholders: Earnings Per Share, Diluted Diluted net income (loss) per share applicable to common stockholders Earnings Per Share, Diluted [Abstract] Diluted net income (loss) per share: Earnings Per Share, Diluted, Other Disclosures [Abstract] Shares used to calculate diluted net income (loss) per share applicable to common stockholders: Earnings Per Share [Text Block] Net Income Per Share Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Employee Stock Option [Member] Equity Option Entity Central Index Key Entity Central Index Key Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity [Domain] Entity [Domain] Entity Filer Category Entity Filer Category Entity Registrant Name Entity Registrant Name Equity [Abstract] Equity [Abstract] Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Expiration of operating lease agreements. Expiration Of Operating Lease Agreements Expiration of operating lease agreements Expiration of other contractual obligations. Expiration Of Other Contractual Obligations Expiration of other contractual obligations Finite-Lived Intangible Assets, Accumulated Amortization Less accumulated amortization Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year Estimated amortization expense based on current amount of domains, remainder of 2015 Finite Lived Intangible Assets, Amortization Expense, Thereafter Finite Lived Intangible Assets, Amortization Expense, Thereafter Estimated amortization expense based on current amount of domains, thereafter Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Gross Internet domain names Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Net Internet domain names, net Furniture and Fixtures [Member] Furniture and Fixtures General and Administrative Expense General and administrative General and Administrative Expense [Member] General and Administrative Geographic Concentration Risk [Member] Geographic Concentration Risk Goodwill Balance as of September 30, 2015 Balance as of December 31, 2014 Goodwill Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill Disclosure [Text Block] Goodwill Goodwill [Line Items] Goodwill [Line Items] Goodwill, Written off Related to Sale of Business Unit Sale of certain assets related to domain operations Group One [Member] Group One [Member] Dividends declared during 2014 Group Two [Member] Group Two [Member] Dividends declared during 2015 Income (Loss) from Continuing Operations Attributable to Parent Net loss from continuing operations Net loss from continuing operations Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Income (loss) from continuing operations before provision for income taxes Income (Loss) from Continuing Operations, Per Basic and Diluted Share Continuing operations Income (Loss) from Continuing Operations, Per Basic Share Net loss from continuing operations applicable to common stockholders Income (Loss) from Continuing Operations, Per Diluted Share Net loss from continuing operations applicable to common stockholders Income Loss From Discontinued Operations Diluted Income Loss From Discontinued Operations Diluted Discontinued operations, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Discontinued operations, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract] Discontinued operations: Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic and Diluted Share Discontinued operations, net of tax Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Discontinued operations, net of tax Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share Discontinued operations, net of tax Income Statement [Abstract] Income Statement [Abstract] Disposal Group Name [Axis] Disposal Group Name [Axis] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Income Taxes Receivable, Current Refundable taxes Income Tax Expense (Benefit) Income tax expense Increase (Decrease) in Accounts Payable Accounts payable Increase (Decrease) in Accounts Receivable Accounts receivable, net Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Accrued expenses and other current liabilities Increase (Decrease) in Deferred Revenue Deferred revenue Increase (Decrease) in Income Taxes Receivable Refundable taxes Increase (Decrease) in Operating Capital [Abstract] Change in certain assets and liabilities: Increase (Decrease) in Other Noncurrent Liabilities Other non-current liabilities Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses, other current assets and other assets Incremental common shares attributable to conversion of common stock. Incremental Common Shares Attributable to Conversion of Common Stock Conversion of Class A to Class B common shares outstanding Intangible Assets Disclosure [Text Block] Intangible and other assets, net Interest Expense, Other Other expense Interest and line of credit expense, net Internet Domain Names [Member] Internet Domain Names Investments, All Other Investments [Abstract] Investments, All Other Investments [Abstract] Leasehold Improvements [Member] Leasehold Improvements Leases [Abstract] Leases [Abstract] Legal Entity [Axis] Legal Entity [Axis] Legal Matters and Contingencies [Text Block] Contingencies and Taxes Liabilities Total liabilities Liabilities and Equity Total liabilities and stockholders' equity Liabilities and Equity [Abstract] Liabilities and Stockholders' Equity Liabilities, Current Total current liabilities Liabilities, Current [Abstract] Current liabilities: Libor Rate Libor Rate LIBOR rate Long-term Line of Credit Borrowings under the credit agreement Line of Credit Facility, Expiration Date Maturity period Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Line of Credit Facility, Maximum Borrowing Capacity Secured revolving credit facility Line of Credit Facility [Table] Line of Credit Facility [Table] Customer [Axis] Customer [Axis] Maximum [Member] Maximum Minimum [Member] Minimum Customer [Domain] Customer [Domain] Net Cash Provided by (Used in) Financing Activities Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows from financing activities: Net Cash Provided by (Used in) Investing Activities Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from investing activities: Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows from operating activities: Net Income (Loss) Attributable to Parent Net income (loss) Net income (loss) Net Income (Loss) Available to Common Stockholders, Basic Net income (loss) applicable to common stockholders Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Numerator: Net Income (Loss) Available to Common Stockholders, Diluted Net income (loss) applicable to common stockholders Net Income (Loss) Available to Common Stockholders, Diluted [Abstract] Numerator: Net income (loss) from continuing operations apportioned to common stockholders after extraordinary items Net Income (Loss) from Continuing Operations Available to Common Stockholders, Basic Net loss from continuing operations applicable to common stockholders Net Income (Loss) from Continuing Operations Available to Common Stockholders Diluted Net Income (Loss) from Continuing Operations Available to Common Stockholders Diluted Net loss from continuing operations applicable to common stockholders Net Income (Loss) from Discontinued Operations Available to Common Stockholders, Basic Net Income (Loss) from Discontinued Operations Available to Common Stockholders, Basic Discontinued operations, net of tax New Accounting Pronouncements, Policy [Policy Text Block] Recent Accounting Pronouncement(s) Not Yet Effective Nonoperating Income (Expense) Total other expense Nonoperating Income (Expense) [Abstract] Other income (expense): Number Of Advertising Agencies Number Of Advertising Agencies Number of advertising agencies Number of distribution partners. Number Of Major Distribution Partners Number of distribution partners that were paid consolidated revenue Number of shares repurchased to cover taxes on restricted stock vest for certain executives. Number Of Shares Repurchased For Taxes On Restricted Stock Repurchase of stock for tax withholding Operating Income (Loss) Income (Loss) from operations Income (loss) from operations Operating Leases, Future Minimum Payments Due Facilities operating leases Total minimum payments Operating Leases, Future Minimum Payments, Due in Five Years and Thereafter Operating Leases, Future Minimum Payments, Due in Five Years and Thereafter Facilities operating leases 2019 and after Operating Leases, Future Minimum Payments, Due in Four Years Facilities operating leases 2018 Operating Leases, Future Minimum Payments, Due in Three Years Facilities operating leases 2017 Operating Leases, Future Minimum Payments, Due in Two Years Facilities operating leases 2016 Operating Leases, Future Minimum Payments, Remainder of Fiscal Year Facilities operating leases 2015 Operating Leases, Rent Expense, Net Rent expense Operating Segments [Member] Operating Segments Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Description of Business and Basis of Presentation Other Accrued Liabilities, Current Accrued expenses and other current liabilities Other Assets Intangible and other assets, net Total intangibles and other assets, net Other Assets, Noncurrent Other Other Commitment Other contractual obligations, Total minimum payments Other Commitment, Due after Fifth Year and Thereafter Other Commitment, Due after Fifth Year and Thereafter Other contractual obligations 2019 and after Other Commitment, Due in Fourth Year Other contractual obligations 2018 Other Commitment, Due In Remainder Of Current Fiscal Year Other Commitment, Due In Remainder Of Current Fiscal Year Other contractual obligations 2015 Other Commitment, Due in Second Year Other contractual obligations 2016 Other Commitment, Due in Third Year Other contractual obligations 2017 Other Liabilities, Noncurrent Other non-current liabilities Other Nonoperating Income (Expense) Other Partner and other revenue sources. Partner And Other Revenue Sources [Member] Partner and Other Revenue Sources Payments for Repurchase of Common Stock Repurchase of Class B common stock Payments of Ordinary Dividends, Common Stock Common stock dividend payments Payments Related to Tax Withholding for Share-based Compensation Minimum withholding tax Tax withholding related to restricted stock awards Payments to Acquire Intangible Assets Purchases of intangible assets and changes in other non-current assets Payments to Acquire Property, Plant, and Equipment Purchases of property and equipment Percentage of revenue as criteria for major distribution partners. Percentage Of Revenue As Criteria For Major Distribution Partners Percentage of revenue as criteria for major distribution partners Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Proceeds from Divestiture of Businesses Cash proceeds from sale of discontinued operations Proceeds from Issuance of Common Stock Proceeds from offering, net Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options Proceeds from exercises of stock options and issuance of restricted stock to employees, net of repurchases of forfeited unvested restricted stock Proceeds from sales of discontinued operations Proceeds from sales of discontinued operations Proceeds from sale of discontinued operations, net of costs Proceeds from Stock Plans Proceeds from employee stock purchase plan Product development. Product Development [Member] Product Development Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment Disclosure [Text Block] Property and Equipment Property, Plant and Equipment, Gross Property and equipment, gross Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property, Plant and Equipment, Net Property and equipment, net Property and equipment, net Property, Plant and Equipment [Table Text Block] Property and Equipment Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Proprietary web site traffic sources. Proprietary Web Site Traffic Sources [Member] Proprietary Web Site Traffic Sources Range [Axis] Range [Axis] Range [Domain] Range [Domain] Reallocation of net income (loss) for Class A shares as a result of conversion of Class A to Class B shares. Reallocation Of Net Income Loss For Class Shares As Result Of Conversion Of Class To Class B Shares Reallocation of discontinued operations for Class A shares as a result of conversion of Class A to Class B shares Reconciliation of Revenue from Segments to Consolidated [Table Text Block] Revenues by Segment Research and Development Expense Product development Restricted Stock [Member] Restricted Stock Restricted Stock Units (RSUs) [Member] Restricted Stock Units Retained Earnings (Accumulated Deficit) Accumulated deficit Revenue [Line Items] Revenue [Line Items] Revenue [Line Items] Revenue Recognition, Policy [Policy Text Block] Revenues Revenues Revenue Total Revenue Revenue by revenue source. Revenues Table [Text Block] Revenues Revenue [Table] Revenue [Table] Revenue [Table] Risks and Uncertainties [Abstract] Risks and Uncertainties [Abstract] Sales Revenue, Net [Member] Consolidated Revenue Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule Of Contractual Commitments [Line Items] Schedule Of Contractual Commitments [Line Items] Schedule Of Contractual Commitments [Line Items] Schedule Of Contractual Commitments [Table] Schedule Of Contractual Commitments [Table] Schedule Of Contractual Commitments [Table] Disposal Groups, Including Discontinued Operations [Table Text Block] Operating Results for Discontinued Operations Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Computation of Net Income (Loss) per Share Basic and Diluted Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Stock Based Compensation Expense Included in Operating Expense Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Schedule of future minimum payments for operating leases and other commitments. Schedule of Future Minimum Rental Payments for Operating Leases and Other Commitments [Table Text Block] Future Minimum Payments Schedule of Goodwill [Table] Schedule of Goodwill [Table] Schedule of Goodwill [Table Text Block] Changes in the Carrying Amount of Goodwill Schedule of intangible assets and other assets. Schedule Of Intangible Assets And Other Assets Table [Text Block] Intangible and Other Assets, Net Schedule of Intangible Assets Disclosure [Line Items] Schedule of Intangible Assets Disclosure [Line Items] Schedule of Intangible Assets Disclosure [Line Items] Schedule of Intangible Assets Disclosure [Table] Schedule of Intangible Assets Disclosure [Table] Schedule of Intangible Assets Disclosure [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] Revenues by Geographic Region Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table Text Block] Segment Information Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] Summary of Restricted Stock Awards and Restricted Stock Units Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Summary of Stock Option Activity Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block] Assumptions to Estimate Fair Value for Stock Options at Grant Date Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Schedules of Concentration of Risk, by Risk Factor Discontinued Operations [Member] Discontinued Operations Segments [Domain] Segments [Domain] Geographical [Domain] Geographical [Domain] Operating Activities [Domain] Operating Activities [Domain] Segment Reporting [Abstract] Segment Reporting [Abstract] Segment Reporting Disclosure [Text Block] Segment Reporting and Geographic Information Segment Reporting Information [Line Items] Segment Reporting Information Segment Reporting, Other Significant Reconciling Item, Consolidated [Abstract] Less reconciling items: Selling and Marketing Expense Sales and marketing Selling and Marketing Expense [Member] Sales and Marketing Service costs. Service Costs [Member] Service Costs Share-based Compensation Stock based compensation Stock-based compensation Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Forfeited, Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Forfeited, Weighted average grant date fair value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Granted, Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Granted, Weighted average grant date fair value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Unvested Shares, Ending Balance Unvested Shares, Beginning Balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Weighted average grant date fair value, Ending Balance Weighted average grant date fair value, Beginning Balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Vesting of restricted shares Vested, Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Vested, Weighted average grant date fair value Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Expected dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Expected life (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Expected volatility, maximum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum Expected volatility, minimum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Risk-free interest rate, maximum Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Risk-free interest rate, minimum Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period Options expired, Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Options forfeited, Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Options granted, Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Aggregate intrinsic value, Outstanding Ending Balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Number of shares, Ending Balance Number of shares, Beginning Balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Weighted average exercise price, Ending Balance Weighted average exercise price, Beginning Balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Weighted average remaining contractual term, End of the period Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares Options vested Equity Award [Domain] Equity Award [Domain] Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Options exercised, Weighted average exercise price Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Options expired, Weighted average exercise price Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Options forfeited, Weighted average exercise price Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Options granted, Weighted average exercise price Significant Accounting Policies [Text Block] Significant Accounting Policies Software Development [Member] Purchased and Internally Developed Software Segments [Axis] Segments [Axis] Class of Stock [Axis] Class of Stock [Axis] Geographical [Axis] Geographical [Axis] Statement [Line Items] Statement [Line Items] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Operating Activities [Axis] Operating Activities [Axis] Statement [Table] Statement [Table] Stockholders' Equity Attributable to Parent Total stockholders' equity Stockholders' Equity Attributable to Parent [Abstract] Stockholders' equity: Stockholders' Equity Note Disclosure [Text Block] Common Stock Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Options exercised, Shares Stock Repurchase Program, Number of Shares Authorized to be Repurchased Number of shares authorized to be repurchased Time Vested Stock Options [Member] Time Vested Stock Options [Member] Time Vested Stock Options Trading Symbol Trading Symbol Treasury Stock, Shares, Acquired Treasury stock acquired, shares Treasury Stock, Shares, Retired Treasury stock, shares retired Treasury Stock, Value Treasury stock Treasury Stock, Value, Acquired, Par Value Method Treasury stock acquired, value Uncategorized [Abstract] Uncategorized [Abstract] Uncategorized [Abstract] Unrecognized excess tax benefits from stock-based compensation. Unrecognized excess tax benefits from stock-based compensation Excess tax benefit UNITED STATES United States Weighted Average Number of Shares Outstanding, Diluted Shares used to calculate diluted net income (loss) per share applicable to common stockholders Weighted average number of shares outstanding used to calculate diluted net income (loss) per share Weighted Average Number of Shares Outstanding, Diluted [Abstract] Denominator: Weighted Average Number of Shares Outstanding, Basic Shares used to calculate basic net income (loss) per share applicable to common stockholders Weighted average number of shares outstanding used to calculate basic net income (loss) per share Weighted Average Number of Shares Outstanding, Basic [Abstract] Denominator: