Fair Value Disclosures [Abstract] Changes In Marketable Securities [Roll Forward] Changes In Marketable Securities [Roll Forward] Changes In Marketable Securities [Roll Forward] Balance at December 31, 2018 Marketable Securities Mutual funds purchases Marketable Securities, Additions Marketable Securities, Additions Mutual funds sales Marketable Securities, Sales Marketable Securities, Sales Realized gains (losses) Marketable Securities, Realized Gain (Loss) Balance at September 30, 2019 Revenue from Contract with Customer [Abstract] Disaggregation of revenue Disaggregation of Revenue [Table Text Block] Significant changes in the contract liabilities balance Contract with Customer, Asset and Liability [Table Text Block] Subsequent Events [Abstract] Subsequent Events Review Subsequent Events [Text Block] Statement of Comprehensive Income [Abstract] Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Other comprehensive (loss) income, net of tax: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Unrealized gain (loss) on available for sale securities Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax Net loss on intra-entity foreign currency transactions Other Comprehensive Income, Net Gain (Loss) on Intra Entity Foreign Currency Transactions Arising During Period, Net of Tax Represents the amount after tax, changes to accumulated comprehensive income resulting from net gain (loss) on intra-entity foreign currency transactions. Total other comprehensive loss Other Comprehensive Income (Loss), Net of Tax Comprehensive loss Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive (income) loss attributable to redeemable noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive loss attributable to Synchronoss Comprehensive Income (Loss), Net of Tax, Attributable to Parent Commitments and Contingencies Disclosure [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] The Securities Law Actions The Securities Law Actions [Member] The Securities Law Actions [Member] Litigation Status [Axis] Litigation Status [Axis] Litigation Status [Domain] Litigation Status [Domain] Pending Litigation Pending Litigation [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Remainder of 2019 Purchase Obligation, Future Minimum Payments, Remainder of Fiscal Year 2020 Purchase Obligation, Due in Second Year 2021 Purchase Obligation, Due in Third Year 2022 Purchase Obligation, Due in Fourth Year 2023 and thereafter Purchase Obligation, Due in Fifth Year and Thereafter Purchase Obligation, Due in Fifth Year and Thereafter Total Purchase Obligation Number of complaints filed Loss Contingency, New Claims Filed, Number Schedule of aggregate annual future minimum lease payments under non-cancelable leases Schedule of Future Minimum Rental Payments for Capital and Operating Leases [Table Text Block] Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for capital and operating leases having initial or remaining non-cancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Summary of assets and liabilities held by the Company and their related classifications under the fair value hierarchy Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Assets Assets, Fair Value Disclosure [Abstract] Cash, cash equivalents and restricted cash Cash and Cash Equivalents, Fair Value Disclosure Marketable securities-short term Debt Securities, Available-for-sale, Current Marketable securities-long term Debt Securities, Available-for-sale, Noncurrent Total assets Assets, Fair Value Disclosure Temporary equity Equity, Fair Value Disclosure [Abstract] Redeemable noncontrolling interests Redeemable Noncontrolling Interest, Equity, Other, Fair Value Total temporary equity Equity, Fair Value Disclosure Transfers between Levels Fair Value, Transfers Between Level 1 and Level 2, Description and Policy [Abstract] Fair value of asset transfers between Levels 1, 2, and 3 Fair Value, Assets, Transfers between Levels 1, 2, and 3, Amount Amount of transfers of assets measured on a recurring basis between Levels 1, 2, and 3 of the fair value hierarchy. Leases [Abstract] Weighted-average remaining lease term (years), weighted based on lease liability balances Operating Lease, Weighted Average Remaining Lease Term Weighted-average discount rate (percentages), weighted based on the remaining balance of lease payments Operating Lease, Weighted Average Discount Rate, Percent Cash paid for amounts included in the measurement of lease liabilities Operating Lease, Payments Lease liabilities arising from obtaining right-of-use assets Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Equity Method Investments and Joint Ventures [Abstract] Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] STIN STIN [Member] STIN [Member] Sequential Technology International, LLC Sequential Technology International, LLC [Member] Sequential Technology International, LLC [Member] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Digital Digital [Member] Digital [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Cloud Technology and Support Cloud Technology and Support [Member] Cloud Technology and Support [Member] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Discontinued Operations, Disposed of by Sale Discontinued Operations, Disposed of by Sale [Member] Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Group Name [Domain] Disposal Group Name [Domain] BPO Divestiture BPO Divestiture [Member] BPO Divestiture [Member] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Revenues Revenues Duration of services agreement Duration of Customer Contract Duration of Customer Contract Discontinued operation after disposal, revenue Discontinued Operation, Intra-Entity Amounts, Discontinued Operation after Disposal, Revenue Accounts receivable, net Accounts Receivable, Net, Current Stockholders' Equity Note [Abstract] Stockholders' Equity Shareholders' Equity and Share-based Payments [Text Block] Operating lease cost Operating Lease, Cost Variable lease costs Variable Lease, Cost Sublease income Sublease Income Total net lease cost Lease, Cost ROU asset impairment Operating Lease, Impairment Loss Restructuring and Related Activities [Abstract] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Restructuring Type [Axis] Restructuring Type [Axis] Type of Restructuring [Domain] Type of Restructuring [Domain] Employment termination costs Employee Severance [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Accrued expenses Accrued Liabilities [Member] Restructuring accrual and changes Restructuring Cost and Reserve [Line Items] Restructuring accrual and changes Restructuring Reserve [Roll Forward] Balance at December 31, 2018 Restructuring Reserve Charges Restructuring Charges Payments Payments for Restructuring Other Adjustments Restructuring Reserve, Period Increase (Decrease) Balance at September 30, 2019 Earnings Per Share [Abstract] Schedule of reconciliation of the numerator and denominator used in computing basic and diluted net income attributable to common stockholders per common share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Debt Disclosure [Abstract] Schedule of Debt Schedule of Debt [Table Text Block] Summary of Interest Expense Schedule of Long-term Debt Instruments [Table Text Block] Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Contract asset, balance Contract with Customer, Asset, Net Changes In Contract Liabilities [Roll Forward] Changes In Contract Liabilities [Roll Forward] Changes In Contract Liabilities [Roll Forward] Contract liabilities, beginning balance Contract with Customer, Liability Revenue recognized in the period Contract with Customer, Liability, Revenue Recognized Amounts billed but not recognized as revenue Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress Contract liabilities, ending balance Fair Value Measurements Fair Value Disclosures [Text Block] 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] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Restricted stock awards Restricted Stock [Member] Convertible debt securities Convertible Debt Securities [Member] Stock options Employee Stock Option [Member] Preferred stock Series A Preferred Stock [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Senior Notes Senior Notes [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] 2019 Notes Convertible Senior Notes Due2019 [Member] Represents activity related to 0.75% Convertible Senior Notes due 2019 (the "2019 Notes"). 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 Reconciliation [Abstract] Earnings Per Share Reconciliation [Abstract] Net Income (Loss) Available to Common Stockholders, Diluted [Abstract] Net Income (Loss) Available to Common Stockholders, Diluted [Abstract] Net loss from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Net loss attributable to redeemable noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Preferred stock dividend Preferred Stock Dividends and Other Adjustments Net loss attributable to Synchronoss Net Income (Loss) Attributable to Parent Net (loss) income from continuing operations attributable to Synchronoss Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Income effect for interest on convertible debt, net of tax Interest on Convertible Debt, Net of Tax Weighted-average common shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted average common shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract] Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract] Shares from assumed conversion of convertible debt (in shares) Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities Shares from assumed conversion of preferred stock (in shares) Incremental Common Shares Attributable to Dilutive Effect of Conversion of Preferred Stock Options and unvested restricted shares (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Weighted average common shares outstanding - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Earnings per share: Earnings Per Share, Basic [Abstract] Basic (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share Diluted (in dollars per share) Income (Loss) from Continuing Operations, Per Diluted Share Anti-dilutive stock options excluded (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Conversion ratio Debt Instrument, Convertible, Conversion Ratio Earnings per Common Share (EPS) Earnings Per Share [Text Block] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock Common Stock [Member] Treasury Stock Treasury Stock [Member] Additional Paid-In Capital Additional Paid-in Capital [Member] Accumulated Other Comprehensive Income (Loss) AOCI Including Portion Attributable to Noncontrolling Interest [Member] Accumulated deficit Retained Earnings [Member] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance (in shares) Common Stock, Shares, Issued Beginning balance Stockholders' Equity Attributable to Parent Stock based compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Issuance of restricted stock (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Issuance of restricted stock Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Preferred stock dividends declared Dividends, Preferred Stock Amortization of preferred stock issuance costs Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Issuance of common stock on exercise of options (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Issuance of common stock on exercise of options Stock Issued During Period, Value, Stock Options Exercised Retirement of treasury stock (in shares) Treasury Stock, Shares, Retired Retirement of treasury stock Treasury Stock, Retired, Cost Method, Amount Shares withheld for taxes in connection with issuance of restricted stock (in shares) Shares Paid for Tax Withholding for Share Based Compensation Shares withheld for taxes in connection with issuance of restricted stock Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net Adjustments to purchase price allocation Adjustments to Purchase Price Allocation Adjustments to Purchase Price Allocation Treasury shares received from Siris (IL sale) (in shares) Stock Repurchased During Period, Shares Treasury shares received from Siris (IL sale) Stock Repurchased During Period, Value Net income (loss) attributable to Synchronoss Net Income (Loss) Attributable to Parent, Before Impact Of Preferred Stock Dividends Net Income (Loss) Attributable to Parent, Before Impact Of Preferred Stock Dividends Non-controlling interest Noncontrolling Interest, Change in Redemption Value Total other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent New standard implementation impact/adjustments Cumulative Effect of New Accounting Principle in Period of Adoption Other Stockholders' Equity, Other Fx SBC expense Adjustments To Additional Paid In Capital, Foreign Currency Translation Adjustments Adjustments To Additional Paid In Capital, Foreign Currency Translation Adjustments Ending balance (in shares) Ending balance Number of Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Options outstanding at the beginning of the period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Options Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Options Exercised (in shares) Options Cancelled (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Options outstanding at the end of the period (in shares) Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Exercisable (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Weighted-Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Balance at the beginning of the period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Options Granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Options Exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Options Cancelled (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Balance at the end of the period (in dollars per share) Vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Exercisable (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Weighted-Average Remaining Contractual Term (Years) Share Based Compensation Arrangement by Share Based Payment Award, Options Weighted Average Remaining Contractual Term [Abstract] Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Vested Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Aggregate Intrinsic Value Share Based Compensation Arrangement by Share Based Payment Award, Aggregate Intrinsic Value [Abstract] Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Vested Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value Additional disclosures related to stock options Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Total intrinsic value for stock options exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Total intrinsic value for stock options exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Summary of the restructuring accrual and changes Restructuring and Related Costs [Table Text Block] Restructuring Restructuring and Related Activities Disclosure [Text Block] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Schedule of changes in accumulated other comprehensive income (loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Temporary Equity, by Class of Stock [Table] Temporary Equity, by Class of Stock [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Preferred Stock Preferred Stock [Member] Temporary Equity [Line Items] Temporary Equity [Line Items] Increase (Decrease) in Temporary Equity [Roll Forward] Increase (Decrease) in Temporary Equity [Roll Forward] Beginning balance (in shares) Temporary Equity, Shares Outstanding Issuance of preferred stock (in shares) Temporary Equity, Stock Issued During Period, Shares, New Issues Temporary Equity, Stock Issued During Period, Shares, New Issues Initial discount and issuance costs related to preferred stock (in shares) Temporary Equity, Issuance Costs and Discount, Shares Temporary Equity, Issuance Costs and Discount, Shares Amortization of preferred stock issuance costs (in shares) Temporary Equity, Amortization, Shares Temporary Equity, Amortization, Shares Issuance of preferred PIK dividend (in shares) Temporary Equity, Dividends, Shares Temporary Equity, Dividends, Shares Ending balance (in shares) Beginning balance Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests Issuance of preferred stock Temporary Equity, Stock Issued During Period, Value, New Issues Initial discount and issuance costs related to preferred stock Temporary Equity, Issuance Costs and Discount Temporary Equity, Issuance Costs and Discount Amortization of preferred stock issuance costs Temporary Equity, Amortization Temporary Equity, Amortization Issuance of preferred PIK dividend Temporary Equity, Dividends, Value Temporary Equity, Dividends, Value Ending balance Preferred dividends, paid-in-kind Dividends, Preferred Stock, Paid-in-kind Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Foreign currency Accumulated Foreign Currency Adjustment Attributable to Parent [Member] Unrealized loss on intra-entity foreign currency transactions Accumulated Net Gain Loss On Intra Entity Foreign Currency Transactions [Member] Changes to accumulated comprehensive income resulting from net gain (loss) on intra-entity foreign currency transactions. Unrealized holding losses on marketable debt securities Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] Accumulated Other Comprehensive Income Accumulated Other Comprehensive Income (Loss) [Line Items] Changes in accumulated other comprehensive income (loss) AOCI Attributable to Parent, Net of Tax [Roll Forward] Other comprehensive loss Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Tax effect Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Operating assets and liabilities Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee [Table Text Block] Components of lease expense and weighted average lease term and rates Lease, Cost [Table Text Block] Maturities of operating lease liabilities Lessee, Operating Lease, Liability, Maturity [Table Text Block] Accumulated Other Comprehensive (Loss) / Income Comprehensive Income (Loss) Note [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] ASU 2016-02 Accounting Standards Update 2016-02 [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Accumulated deficit Retained Earnings (Accumulated Deficit) Basis of Presentation and Consolidation Consolidation, Policy [Policy Text Block] Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Recently Issued Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Leases Lessee, Leases [Policy Text Block] Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Statement of Financial Position [Abstract] Accounts receivable, allowance for bad debt (in dollars) Allowance for Doubtful Accounts Receivable, Current Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized (shares) Preferred Stock, Shares Authorized Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Treasury stock, shares (in shares) Treasury Stock, Shares Income Statement [Abstract] Net revenues Revenue from Contract with Customer, Excluding Assessed Tax Costs and expenses: Costs and Expenses [Abstract] Cost of revenues Cost of Services, Excluding Depreciation, Depletion, and Amortization Research and development Research and Development Expense Selling, general and administrative Selling, General and Administrative Expense Restructuring charges Depreciation and amortization Depreciation, Depletion and Amortization Total costs and expenses Costs and Expenses Loss from continuing operations Operating Income (Loss) Interest income Investment Income, Interest Interest expense Interest Expense Gain on extinguishment of debt Gain (Loss) on Extinguishment of Debt Other (expense) income, net Other Nonoperating Income (Expense) Equity method investment (loss) income Income (Loss) from Equity Method Investments Loss from continuing operations, before taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest (Provision) benefit for income taxes Income Tax Expense (Benefit) Preferred stock dividend Preferred Stock Dividends, Income Statement Impact Basic (in shares) Diluted (in shares) Basis of Presentation and Consolidation Basis of Presentation and Significant Accounting Policies [Text Block] Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Redeemable Noncontrolling Interests Redeemable Noncontrolling Interest [Member] Represents the portion of liability or temporary equity in a subsidiary not attributable, directly or indirectly, to the parent. Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Changes in fair value of the Company’s Level 3 redeemable noncontrolling interests Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] Balance at December 31, 2018 Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs Fair value adjustment Temporary Equity, Accretion to Redemption Value Net income attributable to redeemable noncontrolling interests Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings Balance at September 30, 2019 Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Performance based cash units Performance Shares [Member] Stockholder's Equity Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Series A preferred stock Temporary Equity [Table Text Block] Schedule of stock-based compensation Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block] Schedule of fair value assumptions Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of information about stock options outstanding Share-based Compensation, Stock Options, Activity [Table Text Block] Summary of unvested restricted stock and performance shares activity Nonvested Restricted Stock Shares Activity [Table Text Block] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Cloud Cloud [Member] Cloud [Member] Messaging Messaging [Member] Messaging [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Americas Americas [Member] APAC Asia Pacific [Member] EMEA EMEA [Member] Professional Services Professional Services [Member] Professional Services [Member] Transaction Services Transaction Services [Member] Transaction Services [Member] Subscription Services Subscription Services [Member] Subscription Services [Member] License License [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Net revenues Impact of new accounting standard Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Commitments, Contingencies and Other Commitments and Contingencies Disclosure [Text Block] Income tax expense (benefit) Effective tax rate Effective Income Tax Rate Reconciliation, Percent Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Debt Instrument [Line Items] Debt Instrument [Line Items] Amortization of debt issuance costs Amortization of Debt Issuance Costs Interest on borrowings Interest Expense, Debt Additional interest on default Additional Interest Expense on Default Additional Interest Expense on Default Capital leases Interest Expense, Lessee, Assets under Capital Lease Other Interest Expense, Other Total Aggregate fair value of investment with unrealized losses Debt Securities, Available-for-sale, Unrealized Loss Position Other Income and Expenses [Abstract] Additional Financial Information Other Nonoperating Income and Expense [Text Block] Remaining performance obligation Revenue, Remaining Performance Obligation, Amount Remaining performance obligation, percent Revenue, Remaining Performance Obligation, Percentage Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, remaining performance obligation, expected timing of satisfaction, period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Restricted cash Restricted Cash and Cash Equivalents, Current Marketable securities, current Available-for-sale Securities, Current Accounts receivable, net of allowances for bad debt of $3,318 and $4,599 at September 30, 2019 and December 31, 2018, respectively Prepaid expenses Prepaid Expense, Current Other current assets Other Assets, Current Total current assets Assets, Current Marketable securities, non-current Available-for-sale Securities, Noncurrent Property and equipment, net Property, Plant and Equipment, Net Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Goodwill Goodwill Intangible assets, net Finite-Lived Intangible Assets, Net Other assets Other Assets, Noncurrent Equity method investment Equity Method Investments Total assets Assets LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued expenses Accrued Liabilities, Current Deferred revenues, current Contract with Customer, Liability, Current Short-term convertible debt, net of debt issuance costs Short-term Debt Total current liabilities Liabilities, Current Lease financing obligation Capital Lease Obligations, Noncurrent Operating lease liabilities, non-current Operating Lease, Liability, Noncurrent Deferred tax liabilities Deferred Income Tax Liabilities, Net Deferred revenues, non-current Contract with Customer, Liability, Noncurrent Other non-current liabilities Other Liabilities, Noncurrent Redeemable noncontrolling interest Redeemable Noncontrolling Interest, Equity, Carrying Amount Commitments and contingencies (Note 13) Commitments and Contingencies Series A Convertible Participating Perpetual Preferred Stock, $0.0001 par value; 10,000 shares authorized; 210 shares issued and outstanding at September 30, 2019 Preferred Stock, Value, Issued Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Common stock, $0.0001 par value; 100,000 shares authorized, 51,608 and 49,836 shares issued; 44,446 and 42,674 outstanding at September 30, 2019 and December 31, 2018, respectively Common Stock, Value, Issued Treasury stock, at cost (7,162 and 7,162 shares at September 30, 2019 and December 31, 2018, respectively) Treasury Stock, Value Additional paid-in capital Additional Paid in Capital, Common Stock Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total stockholders’ equity Total liabilities and stockholders’ equity Liabilities and Equity Non-current operating lease ROU assets Operating Lease, Right-of-Use Asset, Noncurrent Operating Lease, Right-of-Use Asset, Noncurrent Current operating lease liabilities Operating Lease, Liability, Current Non-current operating lease liabilities Total operating lease liabilities Operating Lease, Liability Debt Debt Disclosure [Text Block] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value Measurements of Assets and Liabilities Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Schedule of assets and liabilities held and their related classifications under the fair value hierarchy Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of estimated fair value of investments classified as available for sale Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Estimated fair value of investments in marketable equity securities Marketable Securities [Table Text Block] Schedule of changes in fair value of Level 3 Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Leases Lessee, Operating Leases [Text Block] Statement of Cash Flows [Abstract] Operating activities: Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Net loss Adjustments to reconcile Net Loss to net cash used in operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization, Net of Impairment Depreciation, Depletion and Amortization, Net of Impairment Change in fair value of financial instruments Fair Value Adjustment of Warrants (Gain) loss on extinguishment of debt Accrued PIK interest Paid-in-Kind Interest Income Paid-in-Kind Interest Income Allowance for loan losses Provision for Loan, Lease, and Other Losses (Earnings) loss from equity method investments Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Loss (Gain) on disposals Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Amortization of bond premium Amortization of Debt Discount (Premium) Deferred income taxes Deferred Income Tax Expense (Benefit) Stock-based compensation Share-based Compensation Cumulative adjustment to STI receivable Cumulative Adjustment To Receivable Cumulative Adjustment To Receivable ROU Asset Impairment Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable, net of allowance for doubtful accounts Increase (Decrease) in Accounts Receivable Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Other assets Increase (Decrease) in Other Operating Assets Accounts payable Increase (Decrease) in Accounts Payable Accrued expenses Increase (Decrease) in Accrued Liabilities Other liabilities Increase (Decrease) in Other Operating Liabilities Deferred revenues Increase (Decrease) in Contract with Customer, Liability Net cash provided by (used for) operating activities Net Cash Provided by (Used in) Operating Activities Investing activities: Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Purchases of capitalized software Payments for Software Purchases of marketable securities available for sale Payments to Acquire Available-for-sale Securities Maturity of marketable securities available for sale Proceeds from Sale and Maturity of Debt Securities, Available-for-sale Business acquired, net of cash Payments to Acquire Businesses, Net of Cash Acquired Net cash used for investing activities Net Cash Provided by (Used in) Investing Activities Financing activities: Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Extinguishment of outstanding Convertible Senior Notes Repayments of Convertible Debt Proceeds from issuance of preferred stock Proceeds from Issuance of Redeemable Preferred Stock Preferred dividend payment Payments of Ordinary Dividends, Preferred Stock and Preference Stock Payments for finance leases Repayments of Long-term Capital Lease Obligations Net cash (used for) provided by financing activities Net Cash Provided by (Used in) Financing Activities Effect of exchange rate changes on cash Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Net decrease in cash, restricted cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash, restricted cash and cash equivalents, beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, restricted cash and cash equivalents, end of period Supplemental disclosures of non-cash investing and financing activities: Noncash Investing and Financing Items [Abstract] Accrued dividends on Series A Convertible Participating Perpetual Preferred Stock Dividends Accrued On Preferred Stock Dividends Accrued On Preferred Stock Cash and cash equivalents per the Condensed Consolidated Balance Sheets Restricted cash per the Condensed Consolidated Balance Sheets Restricted Cash Stock options Employee And Directors Stock Options [Member] An arrangement whereby an employee or member of the Board of Directors is entitled to receive in the future, subject to vesting and other restrictions, a number of shares in the entity at a specified price, as defined in the agreement. Weighted-average assumptions Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Expected stock price volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Expected life of options (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Expected dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Weighted-average fair value (grant date) of the options (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Remainder of 2019 Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year 2020 Lessee, Operating Lease, Liability, Payments, Due Year Two 2021 Lessee, Operating Lease, Liability, Payments, Due Year Three 2022 Lessee, Operating Lease, Liability, Payments, Due Year Four 2023 Lessee, Operating Lease, Liability, Payments, Due Year Five Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five Total future lease payments Lessee, Operating Lease, Liability, Payments, Due Less: amount representing interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Present value of future lease payments (lease liability) Document and Entity Information Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Document Type Document Type Document Period End Date Document Period End Date Amendment Flag Amendment Flag Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Entity Current Reporting Status Entity Current Reporting Status Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding FX gains (losses) Foreign Currency Transaction Gain (Loss), before Tax PIK Note impairment Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down Litigation settlement Gain (Loss) Related to Litigation Settlement Remeasurement gain (loss) on financial instrument Income from Investment Cost-method Investments, Realized Gain (Loss) Royalty income Royalty Income, Nonoperating Others Other Sundry Nonoperating Income (Expense), Net Other Sundry Nonoperating Income (Expense), Net Total Legal settlement Litigation Settlement, Expense IP settlement from third parties IP Settlement From Third Parties IP Settlement From Third Parties Description of Business Description of Business Nature of Operations [Text Block] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2015 Plan Equity Incentive Plan 2015 [Member] Definition: Information pertaining to the 2015 Equity Incentive Plan (the "2015 Plan"). Number of Awards Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Non-vested at the beginning of the period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Non-vested at the end of the period (in shares) Weighted- Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract] Non-vested at the beginning of the period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Non-vested at the end of the period (in dollars per share) Vesting period (in years) Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Subsequent Event [Table] Subsequent Event [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolving Credit Facility Revolving Credit Facility [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Federal Funds Rate Federal Funds Effective Swap Rate [Member] LIBOR London Interbank Offered Rate (LIBOR) [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Basis spread on variable rate (as a percent) Debt Instrument, Basis Spread on Variable Rate Floor rate Debt, Floor Interest Rate Debt, Floor Interest Rate Commitment fee percentage Line of Credit Facility, Commitment Fee Percentage Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Series A Preferred Stock Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Silver Private Holdings I, LLC Silver Private Holdings I, LLC [Member] Silver Private Holdings I, LLC [Member] Ownership Percentage [Axis] Ownership Percentage [Axis] Ownership Percentage [Axis] Ownership Percentage [Domain] Ownership Percentage [Domain] [Domain] for Ownership Percentage [Axis] Ten Percent or Greater Ownership Ten Percent or Greater Ownership [Member] Ten Percent or Greater Ownership [Member] Greater than Five and Less than Ten Percent Ownership Greater than Five and Less than Ten Percent Ownership [Member] Greater than Five and Less than Ten Percent Ownership [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Chief Executive Officer Chief Executive Officer [Member] Board of Directors Chairman Board of Directors Chairman [Member] 2017 New Hire Plan New Hire Equity Incentive Plan 2017 [Member] New Hire Equity Incentive Plan 2017 [Member] Class of Stock [Line Items] Class of Stock [Line Items] Number of votes per share (vote) Number of Votes Per Share Represents the number of votes available for each share held. Dividends Dividends Preferred stock, par value (in dollars per share) Preferred stock, liquidation preference (in dollars per share) Preferred Stock, Liquidation Preference Per Share Consideration received on transaction Sale of Stock, Consideration Received on Transaction Number of shares repurchased under program (in shares) Treasury Stock, Shares, Acquired Preferred stock, dividends (in shares) Preferred Stock Dividends, Shares Dividend rate, percentage Preferred Stock, Dividend Rate, Percentage Convertible preferred stock, shares to be issued upon conversion (in shares) Convertible Preferred Stock, Shares Issued upon Conversion Convertible preferred stock, conversion price per share (in dollars per share) Convertible Preferred Stock, Conversion Price Per Share Convertible Preferred Stock, Conversion Price Per Share Preferred stock, redemption period Preferred Stock, Redemption Period Preferred Stock, Redemption Period Preferred stock, liquidation preference Preferred Stock, Liquidation Preference, Value Preferred stock, redemption amount Preferred Stock, Redemption Amount Number of elected directors Number of Elected Directors Number of Elected Directors Preferred stock, ownership percentage Preferred Stock, Ownership Percentage Preferred Stock, Ownership Percentage Fair value, approval threshold Long-term Debt, Fair Value, Approval Threshold Under EBITDA Non-Compliance Long-term Debt, Fair Value, Approval Threshold Under EBITDA Non-Compliance Fair market value of transaction, individual Fair Market Value of Individual Transaction, Approval Threshold Under EBITDA Non-Compliance Fair Market Value of Individual Transaction, Approval Threshold Under EBITDA Non-Compliance Fair market value of transaction, aggregate Fair Market Value of Aggregate Transactions, Approval Threshold Under EBITDA Non-Compliance Fair Market Value of Aggregate Transactions, Approval Threshold Under EBITDA Non-Compliance Capital expenditure threshold Capital Expenditures, Approval Threshold Under EBITDA Non-Compliance Capital Expenditures, Approval Threshold Under EBITDA Non-Compliance Percentage ownership after conversion Conversion of Stock, Percentage Ownership after Conversion Conversion of Stock, Percentage Ownership after Conversion Voting percentage threshold of ownership Conversion of Stock, Voting Percentage Threshold of Ownership Conversion of Stock, Voting Percentage Threshold of Ownership Number of board of director members Number Of Board Of Director Members Number Of Board Of Director Members Number of board of director members elected by preferred stock holders Number Of Board Of Director Members Elected By Preferred Stock Holders Number Of Board Of Director Members Elected By Preferred Stock Holders Number of board of directors agreed upon to be elected meeting independence criteria Number Of Board Of Directors Agreed Upon To Be Elected Meeting Independence Criteria Number Of Board Of Directors Agreed Upon To Be Elected Meeting Independence Criteria Number of board of directors elected meeting independence criteria Number Of Board Of Directors Elected Meeting Independence Criteria Number Of Board Of Directors Elected Meeting Independence Criteria Minimum number of board of director members that preferred stock holders can appoint pursuant to certification Minimum Number Of Board Of Director Members That Preferred Stock Holders Can Appoint Pursuant To Certification Minimum Number Of Board Of Director Members That Preferred Stock Holders Can Appoint Pursuant To Certification Maximum ownership threshold allowed for director election rights, percent Maximum Ownership Threshold Allowed For Director Election Rights, Percent Maximum Ownership Threshold Allowed For Director Election Rights, Percent Demand registrations allowed under agreement Equity Agreement, Demand Registrations Allowed Under Agreement Equity Agreement, Demand Registrations Allowed Under Agreement Demand registrations allowed under agreement annually Equity Agreement, Demand Registrations Allowed Under Agreement Annually Equity Agreement, Demand Registrations Allowed Under Agreement Annually Demand registration, minimum percentage of shares Equity Agreement, Demand Registration, Minimum Percentage Of Shares Equity Agreement, Demand Registration, Minimum Percentage Of Shares Number of shares available for grant (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Liability, accrued expenses, non-vested Deferred Compensation Share-based Arrangements, Liability, Current Revenue Revenue from Contract with Customer [Text Block] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Certificates of deposit Certificates of Deposit [Member] Corporate bonds Corporate Debt Securities [Member] Municipal bonds Municipal Bonds [Member] Treasury bonds US Treasury Bond Securities [Member] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Amortized Cost to Fair Value Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract] Amortized Cost Debt Securities, Available-for-sale, Amortized Cost Gross Unrealized Gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Fair Value Debt Securities, Available-for-sale Components of other (expense) income, net Schedule of Other Nonoperating Income (Expense) [Table Text Block] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Cost of revenues Cost of Sales [Member] Research and development Research and Development Expense [Member] Selling, general and administrative Selling, General and Administrative Expenses [Member] Performance Based Cash Units Sale of Stock [Axis] Sale of Stock [Axis] Sale of Stock [Domain] Sale of Stock [Domain] Employee Stock Purchase Plan Employee Stock [Member] Employee Service Share-based Compensation, Aggregate Disclosures [Abstract] Employee Service Share-based Compensation, Aggregate Disclosures [Abstract] Total stock-based compensation expense Allocated Share-based Compensation Expense Tax benefit Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Stock-based compensation cost related to non-vested equity awards not yet recognized as an expense Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Weighted-average period over which stock-based compensation cost related to non-vested equity awards is expected to be recognized Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Investments in Affiliates and Related Transactions Equity Method Investments and Joint Ventures Disclosure [Text Block] Convertible senior notes Debt Instrument, Face Amount Interest rate, as a percent Debt Instrument, Interest Rate, Stated Percentage Principal amount Long-term Debt, Gross Debt issuance costs Debt Issuance Costs, Noncurrent, Net Conversion price (in dollars per share) Debt Instrument, Convertible, Conversion Price Repurchase price, expressed as a percentage of principal of debt repurchased Debt Instrument, Repurchase Price as a Percentage of Principal Amount Repurchased Represents the purchase price of debt to be repurchased expressed as a percentage of the principal amount of the repurchased debt. Convertible Senior Notes Unamortized debt issuance cost Debt Issuance Costs, Net Total debt, carrying value Long-term Debt Total short-term debt, carrying value Long-term Debt, Current Maturities