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full repayment on debt default amount Debt Instrument, Percentage Of Debt Holders, Demand Full Repayment On Debt Default Amount Debt Instrument, Percentage Of Debt Holders, Demand Full Repayment On Debt Default Amount Preferred stock, dividend rate, percentage two Preferred Stock, Dividend Rate, Percentage Two Preferred Stock, Dividend Rate, Percentage Two Total net lease cost Lease, Cost 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] Income Statement Location [Domain] Income Statement Location [Domain] Stated term Debt Instrument, Term Number of additional shares authorized (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized Disposal Group, Held-for-sale, Not Discontinued Operations Disposal Group, Held-for-sale, Not Discontinued Operations [Member] Preferred stock, shares issued (in shares) Temporary Equity, Shares Issued Capital Structure Shareholders' Equity and Share-based Payments [Text Block] Other non-current liabilities Other Liabilities, Noncurrent Preferred stock, dividend rate, percentage one Preferred Stock, Dividend Rate, Percentage One Preferred Stock, Dividend Rate, Percentage One Number of shares repurchased under program (in shares) Treasury Stock, Shares, Acquired Schedule of Interest Expense Schedule of Long-term Debt Instruments [Table Text Block] Debt Instrument [Line Items] Debt Instrument [Line Items] Trading Symbol Trading Symbol Earnings Per Share [Abstract] Amount issued inclusive of underwriters' option to purchase Debt Instrument, Face Amount Inclusive Of Underwriters' Option To Purchase Debt Instrument, Face Amount Inclusive Of Underwriters' Option To Purchase ROU assets: Operating Lease, Right-of-Use Asset [Abstract] Operating Lease, Right-of-Use Asset Remaining performance obligation, percent Revenue, Remaining Performance Obligation, Percentage Redeemable noncontrolling interests Redeemable Noncontrolling Interest, Equity, Other, Fair Value Operating lease liabilities: Operating Lease, Liability [Abstract] Line of Credit Facility [Table] Line of Credit Facility [Table] Cloud Cloud [Member] Cloud [Member] Balance at the beginning of the period (in dollars per share) Balance at the end of the period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Costs and expenses: Costs and Expenses [Abstract] Long-term debt, net of debt issuance costs Long-term Debt, Excluding Current Maturities Total stock-based compensation expense Share-based Payment Arrangement, Expense Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Entity Current Reporting Status Entity Current Reporting Status 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 (loss) per share: Earnings (loss) per share: Earnings Per Share, Basic and Diluted [Abstract] Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Series A Preferred Stock Series A Preferred Stock [Member] Net loss from operations Net loss Net income (loss) attributable to Synchronoss Net loss continuing operations Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Amount issued to underwriters Debt Instrument , Underwriters' Option To Purchase Debt Instrument , Underwriters' Option To Purchase Amortization of debt issuance costs Amortization of debt issuance costs Amortization of Debt Issuance Costs Counterparty Name [Axis] Counterparty Name [Axis] Schedule of Operating Assets and Liabilities Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee [Table Text Block] Vested and exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value Cash and cash equivalents, end of period Cash and cash equivalents, end of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Dividends Dividends Debt, floor interest rate Debt, Floor Interest Rate Debt, Floor Interest Rate Number of shares issued in transaction (in shares) Sale of Stock, Number of Shares Issued in Transaction Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Current assets: Assets, Current [Abstract] On or after June 30, 2022 and prior to June 30, 2023 Debt Instrument, Redemption, Period One [Member] Leases [Abstract] Leases [Abstract] LIBOR London Interbank Offered Rate (LIBOR) [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Disposal Group Classification [Domain] Disposal Group Classification [Domain] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Other Interest Expense, Other Options Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period 2023 Purchase Obligation, to be Paid, Year One 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] Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Total other comprehensive loss Total other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Income Taxes Income Tax Disclosure [Text Block] Over-Allotment Option Over-Allotment Option [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Schedule of Information About Stock Options Outstanding Share-based Payment Arrangement, Option, Activity [Table Text Block] Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Transaction Services Transaction Services [Member] Transaction Services [Member] Vested and exercisable (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number Class of Stock [Line Items] Class of Stock [Line Items] Total Purchase Obligation Credit Facility [Axis] Credit Facility [Axis] Entity Address, Address Line One Entity Address, Address Line One Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Entity Address, Address Line Two Entity Address, Address Line Two Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] 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 Multiplier of par Temporary Equity, Redeemable, Multiplier Of Par Temporary Equity, Redeemable, Multiplier Of Par Basis of Presentation and Consolidation Consolidation, Policy [Policy Text Block] Entity Shell Company Entity Shell Company Expected life of options (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Total current liabilities Liabilities, Current Class of Stock [Domain] Class of Stock [Domain] Series B preferred dividend paid in the form of cash Series B preferred dividend paid in the form of cash Payments of Ordinary Dividends, Preferred Stock and Preference Stock Temporary Equity [Line Items] Temporary Equity [Line Items] Borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Fair value adjustment Temporary Equity, Accretion to Redemption Value Current Fiscal Year End Date Current Fiscal Year End Date Unamortized discount and debt issuance cost Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Leases, non-current Lease, Liability, Noncurrent Lease, Liability, Noncurrent Federal Funds Rate Fed Funds Effective Rate Overnight Index Swap Rate [Member] Statement [Table] Statement [Table] Recently Issued Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Weighted-average assumptions Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Stock-based compensation cost related to non-vested equity awards not yet recognized as an expense Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Range [Axis] Statistical Measurement [Axis] Additions to capitalized software Payments for Software Subsequent Event Subsequent Event [Member] Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Professional Services Professional Services [Member] Professional Services [Member] Intangible assets, net Finite-Lived Intangible Assets, Net Goodwill Goodwill Cost of revenues Cost of Sales [Member] Net loss from operations Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest License License [Member] Description of Business Nature of Operations [Text Block] 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] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Operating lease cost Operating Lease, Cost Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Deferred income taxes Deferred Income Tax Expense (Benefit)