Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 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 Other Income, net Total Other Nonoperating Income (Expense) Commitments, Contingencies and Other Commitments and Contingencies Disclosure [Text Block] 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 Series A Preferred Stock Preferred Stock Series A Preferred Stock [Member] Amortization of bond premium Amortization of Debt Discount (Premium) Treasury Stock Treasury Stock [Member] Convertible preferred stock, conversion ratio Convertible Preferred Stock, Conversion Ratio Convertible Preferred Stock, Conversion Ratio Segments [Axis] Segments [Axis] Preferred stock, par value (in dollars per share) Temporary Equity, Par or Stated Value Per Share 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 Schedule of changes in accumulated other comprehensive income (loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] (Level 3) Fair Value, Inputs, Level 3 [Member] Range [Domain] Statistical Measurement [Domain] LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Line of Credit Line of Credit [Member] Stockholder's Equity Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Deferred tax liabilities Deferred Income Tax Liabilities, Net Preferred Stock Preferred Stock [Member] Current Fiscal Year End Date Current Fiscal Year End Date Loss from continuing operations Operating Income (Loss) Entity Address, Postal Zip Code Entity Address, Postal Zip Code Total current liabilities Liabilities, Current Significant changes in the contract liabilities balance Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Performance based cash units Performance Based Cash Units Performance Shares [Member] Prepaid & Other Current Assets Prepaid Expense and Other Assets, Current Non-vested at the beginning of the period (in dollars per share) Non-vested at the end 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 Variable Rate [Domain] Variable Rate [Domain] Variable Rate [Axis] Variable Rate [Axis] Commitments and contingencies Commitments and Contingencies Shares withheld for taxes in connection with issuance of restricted stock Share-based Payment Arrangement, Decrease for Tax Withholding Obligation Issuance of restricted stock Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures ASSETS Assets [Abstract] Investment, Name [Axis] Investment, Name [Axis] Vesting period (in years) Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Number of votes per share (vote) Number of Votes Per Share Represents the number of votes available for each share held. Entity Shell Company Entity Shell Company Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Cover [Abstract] Other comprehensive loss Other Comprehensive Income (Loss), before Tax Cash paid for amounts included in the measurement of lease liabilities Operating Lease, Payments Accounts payable Accounts Payable, Current 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. Document Type Document Type Earnings Per Share Reconciliation [Abstract] Earnings Per Share Reconciliation [Abstract] Sublease income Sublease Income Accumulated Other Comprehensive (Loss) / Income Comprehensive Income (Loss) Note [Text Block] Preferred stock, shares issued (in shares) Temporary Equity, Shares Issued Accumulated deficit Retained Earnings (Accumulated Deficit) Government Refunds Refunds On Government Refunds On Government Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Changes In Contract Liabilities [Roll Forward] Changes In Contract Liabilities [Roll Forward] Changes In Contract Liabilities [Roll Forward] Gain (loss) on extinguishment of debt (Gain) loss on extinguishment of debt Gain (Loss) on Extinguishment of Debt Commitment fee Debt Instrument, Unused Borrowing Capacity, Fee Contingent consideration, liability Debt Instrument, Contingent Consideration, Liability Debt Instrument, Contingent Consideration, Liability Number of shares repurchased under program (in shares) Treasury Stock, Shares, Acquired 2021 Lessee, Operating Lease, Liability, to be Paid, Year One Options outstanding at the beginning of the period (in shares) Options outstanding at the end of the period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 2024 Lessee, Operating Lease, Liability, to be Paid, Year Four 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 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] 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 Preferred dividends, paid-in-kind Dividends, Preferred Stock, Paid-in-kind Changes in accumulated other comprehensive income (loss) AOCI Attributable to Parent, Net of Tax [Roll Forward] Issuance of preferred PIK dividend (in shares) Temporary Equity, Dividends, Shares Temporary Equity, Dividends, Shares 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 Total net lease cost Lease, Cost Document Quarterly Report Document Quarterly Report Exercisable (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Other Interest Expense, Other Other comprehensive (loss) income, net of tax: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Other non-current liabilities Other Liabilities, Noncurrent Payments on capital obligations Finance Lease, Principal Payments Stock based compensation APIC, Share-based Payment Arrangement, Increase for Cost Recognition Net revenues Revenue from Contract with Customer, Excluding Assessed Tax Lender Name [Axis] Lender Name [Axis] 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 Entity File Number Entity File Number Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Geographical [Domain] Geographical [Domain] Board of Directors Chairman Board of Directors Chairman [Member] Conversion ratio Debt Instrument, Convertible, Conversion Ratio Statement [Line Items] Statement [Line Items] Class of Stock [Domain] Class of Stock [Domain] Earnings per share: Earnings Per Share, Basic and Diluted [Abstract] Term Debt Instrument, Term Borrowings on revolving line of credit Proceeds from Long-term Lines of Credit Document Fiscal Period Focus Document Fiscal Period Focus Number of elected directors Number of Elected Directors Number of Elected Directors Statement [Table] Statement [Table] 2017 New Hire Plan New Hire Equity Incentive Plan 2017 [Member] New Hire Equity Incentive Plan 2017 [Member] Range [Axis] Statistical Measurement [Axis] Convertible Debt Securities Convertible Debt Securities [Member] Credit Facility [Axis] Credit Facility [Axis] Restructuring and Related Activities [Abstract] Restructuring and Related Activities [Abstract] Credit Agreement Credit Agreement [Member] Credit Agreement Basis of Presentation and Consolidation Consolidation, Policy [Policy Text Block] Net loss from continuing operations adjusted for the convertible debt Net Income (Loss) from Continuing Operations Available to Common Shareholders, Diluted Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] 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 Debt Debt Disclosure [Text Block] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Selling, general and administrative Selling, General and Administrative Expenses [Member] Maturity of marketable securities available for sale Proceeds from Sale and Maturity of Debt Securities, Available-for-sale 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] Weighted-average assumptions Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Weighted-average common shares outstanding: Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Amendment Flag Amendment Flag Number of shares available for grant (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Shares from assumed conversion of convertible debt (in shares) Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities Restructuring Restructuring and Related Activities Disclosure [Text Block] Marketable securities, current Marketable securities-short term Debt Securities, Available-for-sale, Current 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. Senior Notes Senior Notes [Member] Geographical [Axis] Geographical [Axis] Subsequent Events Subsequent Events [Text Block] Local Phone Number Local Phone Number 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] Segments [Domain] Segments [Domain] Demand registrations allowed under agreement annually Equity Agreement, Demand Registrations Allowed Under Agreement Annually Equity Agreement, Demand Registrations Allowed Under Agreement Annually Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] 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 Voting percentage threshold of ownership Conversion of Stock, Voting Percentage Threshold of Ownership Conversion of Stock, Voting Percentage Threshold of Ownership Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Amortization of preferred stock issuance costs (in shares) Temporary Equity, Amortization, Shares Temporary Equity, Amortization, Shares Non-current operating lease ROU assets Operating Lease, Right-of-Use Asset, Noncurrent Operating Lease, Right-of-Use Asset, Noncurrent Net income (loss) on inter-company 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. 2022 Lessee, Operating Lease, Liability, to be Paid, Year Two Selling, general and administrative Selling, General and Administrative Expense Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Shares from assumed conversion of preferred stock (in shares) Incremental Common Shares Attributable to Dilutive Effect of Conversion of Preferred Stock Line of Credit Facility [Table] Line of Credit Facility [Table] Components of lease expense and weighted average lease term and rates Lease, Cost [Table Text Block] Entity Current Reporting Status Entity Current Reporting Status 2023 Lessee, Operating Lease, Liability, to be Paid, Year Three Other Assets, non-current Other Assets, Noncurrent Plan Name [Axis] Plan Name [Axis] Investments in Affiliates and Related Transactions Equity Method Investments and Joint Ventures Disclosure [Text Block] Preferred stock, shares authorized (shares) Temporary Equity, Shares Authorized Cash, cash equivalents and restricted cash Cash and Cash Equivalents, Fair Value Disclosure Issuance of restricted stock (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Net loss from continuing operations attributable to Synchronoss Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Depreciation and amortization Depreciation, Depletion and Amortization, Net of Impairment Depreciation, Depletion and Amortization, Net of Impairment Total assets Assets Temporary Equity Equity, Fair Value Disclosure [Abstract] Interest on borrowings Interest Expense, Debt Non-vested at the beginning of the period (in shares) Non-vested at the end of the period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 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 Intangible assets, net Finite-Lived Intangible Assets, Net Income tax benefit related to the exit from STI Income Tax Cancellation On Note Payable or Receivable Income Tax Cancellation On Note Payable or Receivable Weighted-average fair value (PSV) 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 Weighted-Average Remaining Contractual Term (Years) Share Based Compensation Arrangement by Share Based Payment Award, Options Weighted Average Remaining Contractual Term [Abstract] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Unrealized loss on available for sale securities OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Antidilutive Securities [Axis] Antidilutive Securities [Axis] Amounts billed but not recognized as revenue Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress Entity Small Business Entity Small Business Cost of revenues Cost of Sales [Member] Other assets fair value disclosure Other Assets, Fair Value Disclosure Chief Executive Officer Chief Executive Officer [Member] Fair value adjustment Temporary Equity, Accretion to Redemption Value Interest expense Total Interest Expense Demand registrations allowed under agreement Equity Agreement, Demand Registrations Allowed Under Agreement Equity Agreement, Demand Registrations Allowed Under Agreement Consideration received on transaction Sale of Stock, Consideration Received on Transaction Depreciation and amortization Depreciation, Depletion and Amortization Entity Filer Category Entity Filer Category Impact of new accounting standard Accounting Standards Update and Change in Accounting Principle [Table Text Block] Product and Service [Axis] Product and Service [Axis] Digital Digital [Member] Digital [Member] Entity Address, City or Town Entity Address, City or Town Issuance of preferred PIK dividend Temporary Equity, Dividends, Value Temporary Equity, Dividends, Value Weighted-average period over which stock-based compensation cost related to non-vested equity awards is expected to be recognized Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Capital expenditure threshold Capital Expenditures, Approval Threshold Under EBITDA Non-Compliance Capital Expenditures, Approval Threshold Under EBITDA Non-Compliance Series A preferred stock Temporary Equity [Table Text Block] Expected stock price volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Less: amount representing interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Vested Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Additional Financial Information Other Nonoperating Income and Expense [Text Block] Revenue recognized in the period Contract with Customer, Liability, Revenue Recognized Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Net loss attributable to Synchronoss Net Income (Loss) Available to Common Stockholders, Basic Sequential Technology International, LLC and AP Capital Holdings II, LLC Sequential Technology International, LLC And AP Capital Holdings II, LLC [Member] Sequential Technology International, LLC And AP Capital Holdings II, LLC (Level 1) Fair Value, Inputs, Level 1 [Member] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Document Fiscal Year Focus Document Fiscal Year Focus Accounts payable Increase (Decrease) in Accounts Payable Number of Awards Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Messaging Messaging [Member] Messaging [Member] Debt Instrument [Axis] Debt Instrument [Axis] Additional Paid-In Capital Additional Paid-in Capital [Member] Preferred stock dividend Preferred Stock Dividends and Other Adjustments Components of other (expense) income, net Schedule of Other Nonoperating Income (Expense) [Table Text Block] Description of Business Description of Business Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] 2022 Purchase Obligation, to be Paid, Year Two Ownership Percentage [Domain] Ownership Percentage [Domain] [Domain] for Ownership Percentage [Axis] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Class of Stock [Line Items] Class of Stock [Line Items] Accrued expenses Increase (Decrease) in Accrued Liabilities 2015 Plan Equity Incentive Plan 2015 [Member] Definition: Information pertaining to the 2015 Equity Incentive Plan (the "2015 Plan"). Adjustments to reconcile net loss to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Number of board of director members Number Of Board Of Director Members Number Of Board Of Director Members Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Variable lease costs Variable Lease, Cost Revolving Facility Revolving Credit Facility [Member] Loss from continuing operations, before taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Research and development Research and Development Expense Subsequent Event Subsequent Event [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 Common stock, shares authorized (shares) Common Stock, Shares Authorized Options and unvested restricted shares (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Ownership Percentage [Axis] Ownership Percentage [Axis] Ownership Percentage [Axis] 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] 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. Income effect for interest on convertible debt, net of tax Interest on Convertible Debt, Net of Tax Document Period End Date Document Period End Date Entity Registrant Name Entity Registrant Name Income Statement [Abstract] Income Statement [Abstract] Non-current operating lease liabilities Operating Lease, Liability, Noncurrent Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Summary of unvested restricted stock and performance shares activity Nonvested Restricted Stock Shares Activity [Table Text Block] Current assets: Assets, Current [Abstract] Interest income Investment Income, Interest Accumulated Other Comprehensive Income (Loss) AOCI Including Portion Attributable to Noncontrolling Interest [Member] Investing activities: Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Income tax benefit, operating loss carryback Income Tax Expense (Benefit), Operating Loss Carryback Income Tax Expense (Benefit), Operating Loss Carryback Dividends Dividends Comprehensive loss attributable to Synchronoss Comprehensive Income (Loss), Net of Tax, Attributable to Parent 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. Expected dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Other lease costs and income: Other Lease, Cost [Abstract] Other Lease, Cost License License [Member] Restructuring accrual and changes Restructuring Reserve [Roll Forward] Counterparty Name [Domain] Counterparty Name [Domain] APAC Asia Pacific [Member] Purchases of intangible assets and capitalized software Payments for Software Purchases of fixed assets Payments to Acquire Property, Plant, and Equipment Subscription Services Subscription Services [Member] Subscription Services [Member] Entity Tax Identification Number Entity Tax Identification Number Consideration received Asset Purchase Agreement, Consideration Received Asset Purchase Agreement, Consideration Received Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Remaining performance obligation, percent Revenue, Remaining Performance Obligation, Percentage Equity method investment loss Income (Loss) from Equity Method Investments Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Net loss Net loss Net loss from continuing operations Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Disaggregation of revenue Disaggregation of Revenue [Table Text Block] Trading Symbol Trading Symbol Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] 2023 and thereafter Purchase Obligation, to be Paid, after Year Two Purchase Obligation, to be Paid, after Year Two Schedule of stock-based compensation Share-based Payment Arrangement, Cost by Plan [Table Text Block] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Stock-based compensation Share-based Payment Arrangement, Noncash Expense Legal Entity [Axis] Legal Entity [Axis] Taxes paid on withholding shares Payment, Tax Withholding, Share-based Payment Arrangement Summary of the restructuring accrual and changes Restructuring and Related Costs [Table Text Block] Entity [Domain] Entity [Domain] Loans Payable Loans Payable [Member] Deferred revenues Increase (Decrease) in Contract with Customer, Liability Leases Lessee, Operating Leases [Text Block] Issuance of preferred stock (in shares) Temporary Equity, Stock Issued During Period, Shares, New Issues Temporary Equity, Stock Issued During Period, Shares, New Issues Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Total temporary equity Equity, Fair Value Disclosure 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] City Area Code City Area Code Cost of revenues Cost of Goods and Services Sold Income tax refund received Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority 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] Total costs and expenses Costs and Expenses Equity Components [Axis] Equity Components [Axis] Title of 12(b) Security Title of 12(b) Security Restricted stock awards Restricted Stock Awards Restricted Stock [Member] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Minimum Minimum [Member] Current operating lease liabilities Operating Lease, Liability, Current Preferred stock, ownership percentage Preferred Stock, Ownership Percentage Preferred Stock, Ownership Percentage Preferred stock, liquidation preference (in dollars per share) Temporary Equity, Liquidation Preference Per Share Net loss attributable to redeemable noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] 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 Schedule of fair value assumptions Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Options Exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Fair Value Measurements Fair Value Disclosures [Text Block] Total Purchase Obligation Schedule of information about stock options outstanding Share-based Payment Arrangement, Option, Activity [Table Text Block] Commitment fee percentage Line of Credit Facility, Commitment Fee Percentage Weighted- Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract] Cumulative Effect, Period of Adoption, Adjustment Cumulative Effect, Period of Adoption, Adjustment [Member] Additional paid-in capital Additional Paid in Capital, Common Stock Preferred stock, liquidation preference Preferred Stock, Liquidation Preference, Value Subsequent Event Type [Domain] Subsequent Event Type [Domain] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Weighted-average discount rate (percentages), weighted based on the remaining balance of lease payments Operating Lease, Weighted Average Discount Rate, Percent Assets Assets, Fair Value Disclosure [Abstract] Other liabilities Increase (Decrease) in Other Operating Liabilities Total Non-Current Assets Assets, Noncurrent Preferred stock, dividends (in shares) Preferred Stock Dividends, Shares Weighted-Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Employee Service Share-based Compensation, Aggregate Disclosures [Abstract] Share-based Payment Arrangement, Additional Disclosure [Abstract] Issuance of preferred stock Temporary Equity, Stock Issued During Period, Value, New Issues Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Dilutive effect of: Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract] Research and development Research and Development Expense [Member] 2020 Purchase Obligation, to be Paid, Remainder of Fiscal Year Sequential Technology International, LLC Sequential Technology International, LLC [Member] Sequential Technology International, LLC [Member] Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Total future lease payments Lessee, Operating Lease, Liability, to be Paid Preferred stock dividend Preferred Stock Dividends, Income Statement Impact Beginning balance Ending balance Restructuring Reserve Amortization of preferred stock issuance costs Temporary Equity, Amortization Temporary Equity, Amortization Adjustments for New Accounting Pronouncements [Axis] Accounting Standards Update [Axis] (Gain) loss on Disposals of fixed assets Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property Loss (earnings) from Equity method investments Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Accounting Standards Update 2016-02 Accounting Standards Update 2016-02 [Member] Balance at December 31, 2019 Balance at June 30, 2020 Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs Payments Payments for Restructuring Goodwill Goodwill Proceeds from the sale of intangibles Proceeds from Sale of Intangible Assets Title of Individual [Axis] Title of Individual [Axis] Face amount Debt Instrument, Face Amount (Level 2) Fair Value, Inputs, Level 2 [Member] Options Cancelled (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Operating lease liabilities: Operating Lease, Liability [Abstract] Total assets Assets, Fair Value Disclosure EMEA EMEA [Member] Amortization of preferred stock issuance costs Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs 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 Entity Central Index Key Entity Central Index Key Accounting Standards Update 2016-13 Accounting Standards Update 2016-13 [Member] Deferred revenues, current Contract with Customer, Liability, Current Entity Emerging Growth Company Entity Emerging Growth Company Subsequent Event [Line Items] Subsequent Event [Line Items] Options Granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Axis] Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Credit Facility [Domain] Credit Facility [Domain] Diluted (in shares) Weighted average common shares outstanding - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Basic (usd per share) Earnings Per Share, Basic Other Adjustments Restructuring Reserve, Translation and Other Adjustment Other Income and Expenses [Abstract] Other Income and Expenses [Abstract] Expected life of options (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Proceeds from sale, percentage Debt Instrument, Proceeds From Sale, Percentage Debt Instrument, Proceeds From Sale, Percentage Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Debt Disclosure [Abstract] Debt Disclosure [Abstract] Weighted-average remaining lease term (years), weighted based on lease liability balances Operating Lease, Weighted Average Remaining Lease Term Preferred stock, redemption amount Preferred Stock, Redemption Amount Operating activities: Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Thereafter Lessee, Operating Lease, Liability, to be Paid, Due after Year Four Lessee, Operating Lease, Liability, to be Paid, Due after Year Four Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Redeemable noncontrolling interests Redeemable Noncontrolling Interest, Equity, Other, Fair Value Remaining performance obligation Revenue, Remaining Performance Obligation, Amount Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value Total stock-based compensation expense Share-based Payment Arrangement, Expense Preferred dividend payment Payments of Ordinary Dividends, Preferred Stock and Preference Stock Counterparty Name [Axis] Counterparty Name [Axis] Common stock, $0.0001 par value; 100,000 shares authorized, 51,619 and 51,704 shares issued; 44,457 and 44,542 outstanding at June 30, 2020 and December 31, 2019, respectively Common Stock, Value, Issued Non-Current Assets: Assets, Noncurrent [Abstract] Total intrinsic value for stock options exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Tax benefit Share-based Payment Arrangement, Expense, Tax Benefit Debt, current Outstanding balance under Revolving Credit Facility Debt, Current Subsequent Event [Table] Subsequent Event [Table] Purchases of marketable securities available for sale Payments to Acquire Debt Securities, Available-for-sale Comprehensive loss Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] 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 Beginning balance Ending balance Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests Common stock, shares issued (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Issued Total operating lease liabilities Present value of future lease payments (lease liability) Operating Lease, Liability Silver Private Holdings I, LLC Silver Private Holdings I, LLC [Member] Silver Private Holdings I, LLC [Member] Basis of Presentation and Consolidation Basis of Presentation and Significant Accounting Policies [Text Block] Accounts receivable, net Increase (Decrease) in Accounts Receivable Debt Instrument [Line Items] Debt Instrument [Line Items] Series A Convertible Participating Perpetual Preferred Stock, $0.0001 par value; 10,000 shares authorized; 233 shares issued and outstanding at June 30, 2020 Temporary Equity, Carrying Amount, Attributable to Parent Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Total stockholders’ equity Stockholders' Equity Attributable to Parent Duration of services agreement Duration of Customer Contract Duration of Customer Contract Description of Business Nature of Operations [Text Block] Total liabilities and stockholders’ equity Liabilities and Equity Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Income Taxes Income Tax Disclosure [Text Block] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Operating lease cost Operating Lease, Cost Type of Adoption [Domain] Accounting Standards Update [Domain] Anti-dilutive stock options excluded (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Citizens Bank, N.A. Citizens Bank, N.A. [Member] Citizens Bank, N.A. Equity Component [Domain] Equity Component [Domain] Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Property and equipment, net Property, Plant and Equipment, Net Other Other Sundry Nonoperating Income (Expense), Net Other Sundry Nonoperating Income (Expense), Net Net (loss) income attributable to Synchronoss Net Income (Loss) Attributable to Parent Entity Address, State or Province Entity Address, State or Province Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Remaining 2020 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year LIBOR London Interbank Offered Rate (LIBOR) [Member] Investment, Name [Domain] Investment, Name [Domain] Total other comprehensive income (loss) Total other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax 2019 Notes Convertible Senior Notes Due2019 [Member] Represents activity related to 0.75% Convertible Senior Notes due 2019 (the "2019 Notes"). Leases [Abstract] Leases [Abstract] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] 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] Total current assets Assets, Current Comprehensive loss attributable to redeemable noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Earnings per share Earnings Per Share [Abstract] Restructuring charges Charges Restructuring Charges Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Accumulated Other Comprehensive Income Accumulated Other Comprehensive Income (Loss) [Line Items] Entity Interactive Data Current Entity Interactive Data Current Number of Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding ROU assets: Operating Lease, Right-of-Use Asset [Abstract] Operating Lease, Right-of-Use Asset Deferred revenues, non-current Contract with Customer, Liability, Noncurrent Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Options Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Cloud Cloud [Member] Cloud [Member] Common Stock Common Stock [Member] Product and Service [Domain] Product and Service [Domain] Dividend rate, percentage Preferred Stock, Dividend Rate, Percentage Tax effect Other Comprehensive Income (Loss), Tax Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Interest rate, as a percent Debt Instrument, Interest Rate, Stated Percentage Liability, accrued expenses, non-vested Deferred Compensation Share-based Arrangements, Liability, Current Operating assets and liabilities Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee [Table Text Block] Revenue, remaining performance obligation, expected timing of satisfaction, period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period 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 Vested Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Supplemental disclosures of non-cash investing and financing activities: Noncash Investing and Financing Items [Abstract] Options Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Net increase in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Retirement of Convertible Senior Notes & related costs Repayments of Convertible Debt Paid in kind dividends on Series A Convertible Participating Perpetual Preferred Stock Dividends Accrued On Preferred Stock Dividends Accrued On Preferred Stock Maturities of operating lease liabilities Lessee, Operating Lease, Liability, Maturity [Table Text Block] Preferred stock dividends declared Dividends, Preferred Stock Stock Options Share-based Payment Arrangement, Option [Member] Percentage ownership after conversion Conversion of Stock, Percentage Ownership after Conversion Conversion of Stock, Percentage Ownership after Conversion Foreign currency Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member] Basic (in shares) Weighted average common shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Basis spread on variable rate (as a percent) Debt Instrument, Basis Spread on Variable Rate Costs and expenses: Costs and Expenses [Abstract] Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Subsequent Events [Abstract] Subsequent Events [Abstract] Options Cancelled (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Treasury stock, shares (in shares) Treasury Stock, Shares Increase (Decrease) in Temporary Equity [Roll Forward] Increase (Decrease) in Temporary Equity [Roll Forward] Unrealized holding gains (losses) on marketable debt securities AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Including Noncontrolling Interest [Member] Plan Name [Domain] Plan Name [Domain] Revenue Revenue from Contract with Customer [Text Block] (Gain) loss on Disposals of intangible assets Income from sale of intangible assets Gain (Loss) on Disposition of Intangible Assets Beginning balance ASC 842 Lease implementation Adjustments Adoption of new credit loss accounting standard Ending balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Lease liabilities arising from obtaining right-of-use assets Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Stockholders' Equity Shareholders' Equity and Share-based Payments [Text Block] FX gains (losses) Foreign Currency Transaction Gain (Loss), before Tax Class of Stock [Axis] Class of Stock [Axis] Benefit for income taxes Income Tax Expense (Benefit) Transaction Services Transaction Services [Member] Transaction Services [Member] Cash, restricted cash and cash equivalents Cash and cash equivalents, beginning of period Cash and cash equivalents, end of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Non-controlling interest Noncontrolling Interest, Change in Redemption Value 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 Temporary Equity [Line Items] Temporary Equity [Line Items] Relationship to Entity [Domain] Title of Individual [Domain] Accrued expenses Accrued Liabilities, Current Diluted (usd per share) Earnings Per Share, Diluted 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] Americas Americas [Member] Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] Preferred stock, shares outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Temporary Equity, Shares Outstanding Total intrinsic value for stock options exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Schedule of changes in fair value of Level 3 Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Summary of interest expense Schedule of Long-term Debt Instruments [Table Text Block] Contract liabilities, beginning balance Contract liabilities, ending balance Contract with Customer, Liability Other assets Increase (Decrease) in Other Operating Assets Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Deferred income taxes Deferred Income Tax Expense (Benefit) 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 Borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Award Type [Axis] Award Type [Axis] Leases, non-current Lease, Liability, Noncurrent Lease, Liability, Noncurrent Maximum Maximum [Member] Amortization of debt issuance costs Amortization of Debt Issuance Costs Security Exchange Name Security Exchange Name Federal Funds Rate Fed Funds Effective Rate Overnight Index Swap Rate [Member] 2021 Purchase Obligation, to be Paid, Year One Accumulated deficit Retained Earnings [Member] Demand registration, minimum percentage of shares Equity Agreement, Demand Registration, Minimum Percentage Of Shares Equity Agreement, Demand Registration, Minimum Percentage Of Shares Effective tax rate Effective Income Tax Rate Reconciliation, Percent 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] Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Additional disclosures related to stock options Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Equity Award [Domain] Award Type [Domain] Document Transition Report Document Transition Report Professional Services Professional Services [Member] Professional Services [Member] Exercisable (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Treasury stock, at cost (7,162 and 7,162 shares at June 30, 2020 and December 31, 2019, respectively) Treasury Stock, Value Contract asset, balance Contract with Customer, Asset, after Allowance for Credit Loss Earnings per Common Share (EPS) Earnings Per Share [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Redeemable noncontrolling interest Redeemable Noncontrolling Interest, Equity, Carrying Amount Current liabilities: Liabilities, Current [Abstract] Financing activities: Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Shares withheld for taxes in connection with issuance of restricted stock (in shares) Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation 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 Preferred stock, redemption period Preferred Stock, Redemption Period Preferred Stock, Redemption Period Recently Issued Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract]