Accounts receivable, net Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Less accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Additional paid-in capital Additional paid-in-capital Additional Paid in Capital Discount amortization on convertible notes Amortization of Debt Issuance Costs and Discounts Advertising expense Advertising Expense Allowance for credit loss, beginning balance Allowance for credit loss, ending balance Less allowance for credit losses Less allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Amortization of debt financing costs Amortization of Debt Issuance Costs Shares subject to convertible notes stock conversion Convertible Debt Securities [Member] Restricted Stock Restricted Stock [Member] Statement of Financial Position [Abstract] Basic (in dollars per share) Net loss per common share, basic (in dollars per share) Net income (loss) per common share, basic (in dollars per share) Discount amortization on convertible note Amortization of Debt Discount (Premium) Business Acquisition [Line Items] Business Acquisition [Line Items] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Transaction Costs and Business Combinations Business Combinations Policy [Policy Text Block] Capital stock authorized (in shares) Capital Units, Authorized Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Cash and Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activities Accounts receivable Increase (Decrease) in Accounts Receivable Accrued interest on convertible notes Increase (Decrease) in Interest Payable, Net Accounts payable and other liabilities Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] COMMITMENTS AND CONTINGENCIES COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares, issued (in shares) Common Stock, Shares, Issued Common stock, shares, outstanding (in shares) Ending balance (in shares) Beginning balance (in shares) Common Stock, Shares, Outstanding Common stock par value $0.0001 per share, 300,000,000 authorized at December 31, 2023; 45,339,762 issued and outstanding as of December 31, 2023; par value $0.0001 per share, 300,000,000 authorized at December 31, 2022; 26,659,711 issued and outstanding as of December 31, 2022 Common stock par value $0.0001 per share, 300,000,000 authorized at March 31, 2024; 45,594,864 issued and outstanding as of March 31, 2024; 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Preferred Stock, Shares Authorized Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Preferred stock, par or stated value per share (in dollars per share) Preferred Stock, Par or Stated Value Per Share Prepaid insurance Prepaid Insurance Proceeds from convertible notes Proceeds from issuance of convertible notes Proceeds from Convertible Debt Proceeds from the issuance of common stock Proceeds from Issuance of Common Stock Proceeds from PIPE Financing Proceeds from Issuance of Private Placement Proceeds from related party payable Proceeds from Related Party Debt Proceeds from issuance of term notes Proceeds from Issuance of Secured Debt Proceeds from short-term cash advance Proceeds from Short-Term Debt Proceeds from exercise of stock options Proceeds from Stock Options Exercised Total cost Total Cost Property, Plant and Equipment, Gross Property and Equipment, net Property and equipment, net Property, Plant and Equipment, Net Property, Plant and Equipment [Abstract] Property and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Bad debt expense Accounts Receivable, Credit Loss Expense (Reversal) Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment ACCOUNTS RECEIVABLE Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Related Party [Domain] Related Party, Type [Domain] Loan amount Related Party Transaction, Amounts of Transaction Related Party Transaction [Line Items] Related Party Transaction [Line Items] RELATED PARTY TRANSACTIONS Related Party Transactions Disclosure [Text Block] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Repayments of debt Repayments of Long-Term Debt Related party repayments Repayment of related party payable Related party repayments Repayments of Related Party Debt Repayment of 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outstanding (in shares) Class of Warrant or Right, Outstanding STOCKHOLDERS' EQUITY Equity [Text Block] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event [Line Items] Subsequent Event [Line Items] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Supplemental cash flows disclosures Supplemental Cash Flow Information [Abstract] Supplier Concentration Risk Supplier Concentration Risk [Member] Total current assets Assets, Current Current assets: Assets, Current [Abstract] Total receivables Accounts Receivable, before Allowance for Credit Loss, Current Shares subject to warrants stock conversion Warrant [Member] Warrants and rights outstanding Warrants and Rights Outstanding Weighted-average common shares outstanding - diluted (in shares) Denominator for diluted net income per share (in shares) Diluted (in shares) Weighted-average common shares outstanding - basic (in shares) Basic (in shares) 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Securities Excluded from Computation of Earnings Per Share [Table Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Net Loss Per Share Earnings Per Share Earnings Per Share, Policy [Policy Text Block] Class of Stock [Axis] Class of Stock [Axis] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Long-Lived Assets Held-for-Sale, Name [Domain] Long-Lived Assets Held-for-Sale, Name [Domain] Common stock, par or stated value per share (in dollars per share) Common Stock, Par or Stated Value Per Share Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Long-Lived Assets Held-for-Sale by Asset Type [Axis] Long-Lived Assets Held-for-Sale by Asset Type [Axis] Common stock, capital shares reserved for future issuance (in shares) 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Administrative Expenses, Policy [Policy Text Block] Cash in excess of insured limits Cash, Uninsured Amount Issue of common stock Stock Issued During Period, Value, New Issues Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Issue of common stock Stock Issued During Period, Value, Conversion of Convertible Securities Issue of common stock (in shares) Stock Issued During Period, Shares, New Issues Exercise of stock options (in shares) Options exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Issue of common stock (in shares) Stock Issued During Period, Shares, Conversion of Convertible Securities Effect of dilutive securities: Dilutive Securities, Effect on Basic Earnings Per Share [Abstract] Numerator: Net Income (Loss) Available to Common Stockholders, Diluted [Abstract] Interest expense on Convertible Notes Interest on Convertible Debt, Net of Tax Number of Options Share-Based 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[Abstract] Accounting Standards Update [Domain] Accounting Standards Update [Domain] Conversion of L1 Notes into common stock Conversion of Stock, Amount Converted Conversion of convertible notes and interest into common stock Debt Conversion, Converted Instrument, Amount Warrants assumed in business combination at estimated fair value Noncash or Part Noncash Acquisition, Value of Liabilities Assumed Measurement Basis [Axis] Measurement Basis [Axis] Common stock issued for services rendered relating to debt financing Stock Issued Derivative Instrument [Axis] Derivative Instrument [Axis] Income Tax Authority [Axis] Income Tax Authority [Axis] Options granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Supplemental disclosure of non cash activities Noncash Investing and Financing Items [Abstract] Operating loss carryforwards, subject to expiration Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration 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Option, Cost Not yet Recognized, Amount Share price (in dollars per share) Share Price Accounts Receivable, Allowance for Credit Loss [Roll Forward] Accounts Receivable, Allowance for Credit Loss [Roll Forward] Weighted Average Exercise Price (Per Share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Options exercised (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Options forfeited (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] Award Type [Axis] Award Type [Axis] Subsequent Event Subsequent Event [Member] Percentage of amount of shares of common stock Share-Based Compensation Arrangement by Share-Based Payment Award, Percentage of Outstanding Stock Maximum Additional shares authorized (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized Estimated useful life Finite-Lived Intangible Asset, Useful Life Prepaid expenses and other assets Deferred Tax Liabilities, Prepaid Expenses Effective Accounting Pronouncements and Recent Accounting Pronouncements Not Yet Adopted New Accounting Pronouncements, Policy [Policy Text Block] Gain on note repurchase Gain on note repurchase Gain (Loss) on Repurchase of Debt Instrument Concentrations of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Property and equipment, net Deferred Tax Assets, Property, Plant and Equipment Common stock issued for services rendered Issuance of common stock Issue of common stock Issue of common stock (in shares) Stock Issued During Period, Shares, Issued for Services Property and equipment, useful life (in years) Property and equipment, useful life Property, Plant and Equipment, Useful Life Options Vested and Exercisable, Weighted Average Remaining Contractual Life (Years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Weighted Average Vesting (Years) Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Recognition period (in years) Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Number of operating segments Number of Operating Segments Number of reportable segments Number of Reportable Segments CONVERTIBLE NOTE RECEIVABLE Loans, Notes, Trade and Other Receivables, Excluding Allowance for Credit Losses [Text Block] Concentration risk, percentage Concentration Risk, Percentage Fair Value of Financial Instruments Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Conversion price (dollars per share) Debt Instrument, Convertible, Conversion Price Derivative Contract [Domain] Derivative Contract [Domain] Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Line Items] Derivative Instruments and Hedging Activities Disclosures [Line Items] Number of shares issuable per each warrant (in shares) Class of Warrant or Right, Number of Securities Called by Each Warrant or Right Vesting [Axis] Vesting [Axis] Vesting [Domain] Vesting [Domain] Award vesting rights percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Debt instrument, term (in years) Maturity term Debt Instrument, Term Share-based payment award, options, non-vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares Tranche One Share-Based Payment Arrangement, Tranche One [Member] Tranche Two Share-Based Payment Arrangement, Tranche Two [Member] Share-Based Payment Arrangement, Tranche Three Tranche Three Share-Based Payment Arrangement, Tranche Three [Member] Exercise price of warrants (in dollars per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Current Current Federal, State and Local, Tax Expense (Benefit) [Abstract] Accounting Standards Update 2016-02 Accounting Standards Update 2016-02 [Member] Operating lease cost Operating Lease, Cost Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Revenue from Contract with Customer [Abstract] REVENUE RECOGNITION CONTRACT ASSETS AND LIABILITIES Revenue from Contract with Customer [Text Block] Contract assets consisted of the following as of: Capitalized Contract Cost [Abstract] Deferred sales commissions Contract assets Contract assets Gain on termination of lease Gain (Loss) on Termination of Lease Contract liabilities consisted of the following as of Contract with Customer, Liability [Abstract] Deferred revenue Contract liabilities at end of the period Contract liabilities at start of the period Contract with Customer, Liability, Current Operating lease assets Right of Use Assets - Operating Lease Right of use asset - operating lease Revenues Total Revenue Total revenue Revenue from Contract with Customer Benchmark Revenue from Contract with Customer Benchmark [Member] Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Operating cash flows from operating leases Operating cash flows paid to operating leases Operating Lease, Payments Right of use assets obtained in exchange for lease obligations - operating leases Right-of-use assets obtained in exchange for new operating lease liabilities Obtaining a right-of-use asset in exchange for a lease liability Weighted-average discount rate - operating leases Operating Lease, Weighted Average Discount Rate, Percent Total lease payments Lessee, Operating Lease, Liability, to be Paid 2024 2025 Lessee, Operating Lease, Liability, to be Paid, Year One 2027 Lessee, Operating Lease, Liability, to be Paid, Year Four 2026 2027 Lessee, Operating Lease, Liability, to be Paid, Year Three 2025 2026 Lessee, Operating Lease, Liability, to be Paid, Year Two 2024 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Schedule of Lease Liabilities Maturity Schedule of Lease Liability Maturity Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Lease expense Operating Lease, Expense Present value of lease liabilities Lease liabilities Total Operating Lease Liabilities Operating Lease, Liability Current Operating lease liability, current Operating lease liabilities - current Less imputed interest Less Imputed Interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Non-current Operating lease liabilities - non-current Operating lease liability, non-current Schedule of Contract with Customer, Contract Asset, Contract Liability, and Receivable Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Schedule of Lease Cost and Other Information Lease, Cost [Table Text Block] LEASES Lessee, Operating Leases [Text Block] Measurement Input Type [Axis] Measurement Input Type [Axis] Measurement Input, Conversion Price Measurement Input, Conversion Price [Member] Measurement Input, Price Volatility Measurement Input, Price Volatility [Member] Measurement Input, Risk Free Interest Rate Measurement Input, Risk Free Interest Rate [Member] Measurement Input, Share Price Measurement Input, Share Price [Member] Measurement Input Type [Domain] Measurement Input Type [Domain] Derivative liability measurement input Derivative Liability, Measurement Input Convertible warrants, measurement input Warrants and Rights Outstanding, Measurement Input Weighted-average remaining lease term - operating leases (months) Operating Lease, Weighted Average Remaining Lease Term Term of contract Term of contract (in months) Lessee, Operating Lease, Term of Contract Contract Assets (Deferred Commission), Contract Liabilities (Deferred Revenue), Revenue Recognition and Cost of Revenue Revenue from Contract with Customer [Policy Text Block] Contract assets Increase (Decrease) in Contract with Customer, Asset Deferred revenue Increase (Decrease) in Contract with Customer, Liability Contract assets amortization period Capitalized Contract Cost, Amortization Period Maturity term (in years) Maturity term Warrants and Rights Outstanding, Term Allowance for Credit Losses Credit Loss, Financial Instrument [Policy Text Block] Schedule of Allowance for Credit Loss Accounts Receivable, Allowance for Credit Loss [Table Text Block] Liabilities: Liabilities Operating Lease, Liability [Abstract] Accounting standards update Accounting Standards Update [Extensible Enumeration] Amortization of operating lease right of use assets Operating Lease, Right-of-Use Asset, Periodic Reduction Operating lease liabilities Operating lease liabilities Increase (Decrease) in Operating Lease Liability Convertible note receivable Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Noncurrent Conversation rate of preferred stock Preferred Stock, Convertible, Conversion Ratio Related Party Related Party [Member] Nonrelated Party Nonrelated Party [Member] Title of Individual [Domain] Title of Individual [Domain] Customer [Domain] Customer [Domain] Affiliated Entity Affiliated Entity [Member] Director Director [Member] Mr. Harris, CEO Chief Executive Officer [Member] Mr. Sykes, CFO Chief Financial Officer [Member] Geographical [Domain] Geographical [Domain] Geographical [Axis] Geographical [Axis] Customer [Axis] Customer [Axis] Statistical Measurement [Axis] Statistical Measurement [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Maximum Maximum [Member] Minimum Minimum [Member] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Title of Individual [Axis] Title of Individual [Axis] Product and Service [Domain] Product and Service [Domain] Product and Service [Axis] Product and Service [Axis] Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Axis] Cumulative Effect, Period of Adoption [Domain] Cumulative Effect, Period of Adoption [Domain] Lease standard adoption Cumulative Effect, Period of Adoption, Adjustment [Member] Canada CANADA United States UNITED STATES Cover [Abstract] Document Type Amendment Flag Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Entity Registrant Name Entity Central Index Key Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Ex Transition Period Earnings Per Share, Other Disclosure Earnings Per Share, Other Disclosure [Abstract] Weighted-average common shares outstanding Convertible Notes And Term Notes Convertible Notes And Term Notes [Member] Convertible Notes and Term Notes 8.00% Convertible Notes 8.00% Convertible Notes [Member] 8.00% Convertible Notes 8% Secured Convertible Notes, due January 23, 2026 Senior Secured Original Issue Discount Convertible Note Senior Secured Original Issue Discount Convertible Note [Member] Senior Secured Original Issue Discount Convertible Note Term Note Term Note [Member] Term Note 12% Secured Term Notes, due January 23, 2026 Chief Executive Officer, Chief Financial Officer And Director Chief Executive Officer, Chief Financial Officer And Director [Member] Chief Executive Officer, Chief Financial Officer And Director The entire disclosure of contract assets and liabilities to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. Contract Assets and Liabilities [Text Block] CONTRACT ASSETS AND LIABILITIES Retail Revenue Retail Revenue [Member] Retail revenue Brand Revenue Brand Revenue [Member] Brand revenue Accounts Receivable, Credit Loss Expense (Reversal), Current Accounts Receivable, Credit Loss Expense (Reversal), Current Current-period provision (release) for expected credit losses Accounts Receivable, Allowance For Credit Loss, Writeoff, Current Accounts Receivable, Allowance For Credit Loss, Writeoff, Current Write-offs charged against the allowance, net of recoveries and other Lessee, Operating Lease, Liability, to be Paid, after Year Three Lessee, Operating Lease, Liability, to be Paid, after Year Three Thereafter Accrued Expense And Other Liabilities, Current Accrued Expense And Other Liabilities, Current Accrued expense and other current liabilities Accrued expense and other current liabilities Social Security Tax, Employer, Deferral, CARES Act Social Security Tax, Employer, Deferral, CARES Act Deferred payroll tax credits Accounts Payable, Cash Advance, Current Accounts Payable, Cash Advance, Current Short-term cash advances Reverse Recapitalization Business Combination And Asset Acquisition Reverse Recapitalization Business Combination And Asset Acquisition [Abstract] Reverse Recapitalization Disclosure Reverse Recapitalization Disclosure [Text Block] BUSINESS COMBINATIONS Schedule Of Reverse Recapitalization Schedule Of Reverse Recapitalization [Table Text Block] Schedule of Reverse Recapitalization Origination Of Notes Receivable Origination Of Notes Receivable Purchase of convertible note Proceeds From Reverse Recapitalization Proceeds From Reverse Recapitalization Business combination, net of transaction cost Convertible Note Impairment Convertible Note Impairment Convertible note impairment Increase (Decrease) In Social Security Tax, Employer, Deferral, CARES Act Increase (Decrease) In Social Security Tax, Employer, Deferral, CARES Act Deferred payroll tax credits Abandoned Software Implementation Costs Abandoned Software Implementation Costs Abandoned software implementation assets Related Party Accounts Payable Reduction Related Party Accounts Payable Reduction Related party payments on accounts payable Stock Issued, Litigation Settlements Stock Issued, Litigation Settlements Settlement of litigation through issuance of common stock Assets And Liabilities, Lessee Assets And Liabilities, Lessee [Table Text Block] Supplemental Balance Sheet Information Schedule of Supplemental Balance Sheet Information Data Warehouse Data Warehouse [Member] Data warehouse Schedule of Reverse Recapitalization Schedule of Reverse Recapitalization [Table] Schedule Of Reverse Recapitalization [Table] TCAC Non-redeeming Shareholders TCAC Non-redeeming Shareholders [Member] TCAC non-redeeming shareholders TCAC Sponsor Shareholders TCAC Sponsor Shareholders [Member] TCAC sponsor shareholders Schedule Of Reverse Recapitalization [Line Items] Schedule Of Reverse Recapitalization [Line Items] Schedule Of Reverse Recapitalization [Line Items] SpringBig Inc Initial Shareholders SpringBig Inc Initial Shareholders [Member] Legacy SpringBig shareholders SpringBig PIPE Investors PIPE Investors [Member] PIPE Investors Stock Issued During Period, Shares, Reverse Recapitalization Stock Issued During Period, Shares, Reverse Recapitalization Recapitalization (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, Vested Shares Issued, Shares, Share-Based Payment Arrangement, Vested RSU vesting (in shares) Stock Issued During Period, Value, Settlement Of Litigation Stock Issued During Period, Value, Settlement Of Litigation Issue of common stock Stock issued during period, value, settlement of litigation Stock Issued During Period, Shares, Settlement Of Litigation Stock Issued During Period, Shares, Settlement Of Litigation Issue of common stock (in shares) Stock Issued During Period, Value, Reverse Recapitalization Stock Issued During Period, Value, Reverse Recapitalization Recapitalization Public Warrants Public Warrants [Member] Public warrants Deferred Tax Assets, Operating Lease Liability Deferred Tax Assets, Operating Lease Liability Operating lease liability Shares Subject To Outstanding Common Stock Options Shares Subject To Outstanding Common Stock Options [Member] Shares subject to outstanding common stock options Shares Unvested And Subject To Exercise, Stock Options Shares Unvested And Subject To Exercise, Stock Options [Member] Shares unvested and subject to exercise of stock options Shares Subject To Contingent Earn-Out Shares Subject To Contingent Earn-Out [Member] Shares subject to contingent earn out 15.00% Convertible Notes 15.00% Convertible Notes [Member] 15.00% Convertible Notes Number Of Subsidiaries Number Of Subsidiaries Number of subsidiaries Recapitalization Exchange Ratio Recapitalization Exchange Ratio Recapitalization exchange ratio Cash Acquired Through Reverse Recapitalization, After Payment To Redeeming Stockholders Cash Acquired Through Reverse Recapitalization, After Payment To Redeeming Stockholders Amount available after paying TCAC redeeming stockholders Proceeds From Reverse Recapitalization Transaction, Before Closing Costs Proceeds From Reverse Recapitalization Transaction, Before Closing Costs Gross proceeds available at closing Gross proceeds available at closing Reverse Recapitalization, Accrued Transaction Costs Reverse Recapitalization, Accrued Transaction Costs Post closing expense (cash paid or accrued for expenses by Legacy SpringBig) Payment of cash and noncash expenses Reverse Recapitalization, Net Reverse Recapitalization, Net Net cash after closing Net cash after closing Proceeds From Reverse Recapitalization Transaction Proceeds From Reverse Recapitalization Transaction Net cash to Legacy SpringBig at closing Net proceeds from reverse recapitalization transaction Proceeds From Reverse Recapitalization Operating Account Proceeds From Reverse Recapitalization Operating Account TCAC operating account Payments Of Reverse Recapitalization Transaction Costs Payments Of Reverse Recapitalization Transaction Costs Expenses paid at closing Contract with Customer, Liability Contract with Customer, Liability [Roll Forward] The movement in the contract liabilities during each period comprised the following: Contract with Customer, Liability, Revenue Recognized, Including Opening Balance Contract with Customer, Liability, Revenue Recognized, Including Opening Balance Less revenue recognized during the period Contract With Customer, Liability, Amounts Invoiced During The Year Contract With Customer, Liability, Amounts Invoiced During The Year Amounts invoiced during the period Old SpringBig Old SpringBig [Member] SpringBig Share-Based Compensation Arrangements By Share-Based Payment Award, Options, Conversion Ratio Share-Based Compensation Arrangements By Share-Based Payment Award, Options, Conversion Ratio Conversion ratio (in shares) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Cancelled in Period Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Cancelled in Period Options cancelled (in shares) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Cancelled in Period, Weighted Average Exercise Price Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Cancelled in Period, Weighted Average Exercise Price Options cancelled (in dollars per share) Common Stock, Additional Capital Shares Reserved For Future Issuance Common Stock, Additional Capital Shares Reserved For Future Issuance Additional shares reserved for issuance (in shares) Issuance of common stock (in shares) Legacy Incentive Plan Legacy Incentive Plan [Member] Legacy Incentive Plan 2022 Long-Term Incentive Plan 2022 Long-Term Incentive Plan [Member] 2022 Long-Term Incentive Plan Reverse Recapitalization, Cash Paid To Shareholders Reverse Recapitalization, Cash Paid To Shareholders Payment to redeeming stockholders Stock Sale Program, Authorized Amount Stock Sale Program, Authorized Amount Stock sale program, authorized amount Reverse Recapitalization, Cash Paid To Shareholders, Price Per Share Reverse Recapitalization, Cash Paid To Shareholders, Price Per Share Stock redeemed during period, price per share (in dollars per share) Shares Issued During Period, Shares, Additional Shares Issued Shares Issued During Period, Shares, Additional Shares Issued Additional shares issued (in shares) Stock Election Shareholders Stock Election Shareholders [Member] Stock Election Shareholders CF Principal Investments LLC CF Principal Investments LLC [Member] CF Principal Investments LLC Boca Raton, Florida, Seattle, Washington And Ontario, Canada Boca Raton, Florida, Seattle, Washington And Ontario, Canada [Member] Boca Raton, Florida, Seattle, Washington And Ontario, Canada Operating Lease, Monthly Rent Expense Operating Lease, Monthly Rent Expense Monthly rent expense Operating Lease, Other Operating Lease, Other Rent expense, other Operating Lease, Right-Of-Use Asset Operating Lease, Right-Of-Use Asset [Abstract] Assets: Disposal Of Operating Lease Liabilities Associated With Right-Of-Use Assets Disposal Of Operating Lease Liabilities Associated With Right-Of-Use Assets Disposal of operating lease liabilities associated with right-of-use assets Disposal Of Right-Of-Use Assets Disposal Of Right-Of-Use Assets Disposal of right-of-use assets Warrant Liabilities Warrant Liabilities [Member] Warrants Estimated Litigation Liability Remaining Estimated Litigation Liability Remaining Remaining liability Litigation Settlement, Amount Awarded To Other Party, Periodic Payments, Amount Litigation Settlement, Amount Awarded To Other Party, Periodic Payments, Amount Litigation settlement, amount awarded to other party, periodic payments, amount Contract with Customer, Assets Contract with Customer, Assets [Roll Forward] Contract with Customer, Assets [Roll Forward] Contract with Customer, Assets, Current Contract with Customer, Assets, Current Contract assets at start of the period Contract assets at end of the period Contract With Customer, Assets, Amounts Expensed During The Year Contract With Customer, Assets, Amounts Expensed During The Year (Less) amounts expensed during the period Contract with Customer, Assets, Expense Deferred, Including Opening Balance Contract with Customer, Assets, Expense Deferred, Including Opening Balance Expense deferred during the period Effective Income Tax Rate Reconciliation, Nondeductible Expenses And Tax Exempt Income, Net Percent Effective Income Tax Rate Reconciliation, Nondeductible Expenses And Tax Exempt Income, Net Percent Non-deductible or non-taxable items Effective Income Tax Rate Reconciliation, Foreign Income Taxes, Percent Effective Income Tax Rate Reconciliation, Foreign Income Taxes, Percent Foreign income taxes Effective Income Tax Rate Reconciliation, Nondeductible Expenses And Tax Exempt Income, Net Effective Income Tax Rate Reconciliation, Nondeductible Expenses And Tax Exempt Income, Net Non-deductible or non-taxable items Effective Income Tax Rate Reconciliation, Foreign Income Taxes Effective Income Tax Rate Reconciliation, Foreign Income Taxes Foreign income taxes Redeemable Warrants Redeemable Warrants [Member] Redeemable Warrants Public And Private Warrants Public And Private Warrants [Member] Public And Private Warrants Private Placement Warrant Private Placement Warrant [Member] Private Placement Warrant Contingent And Earnout Shares, Stock Price Threshold, Trading Days Contingent And Earnout Shares, Stock Price Threshold, Trading Days Contingent and earnout shares, stock price threshold, triggering event period Sponsor Escrow Agreement, Release Of Shares, Stock Price Trigger Sponsor Escrow Agreement, Release Of Shares, Stock Price Trigger Stock price trigger (in dollars per share) Sponsor Escrow Agreement, Stock Price Trigger, Threshold Trading Days Sponsor Escrow Agreement, Stock Price Trigger, Threshold Trading Days Number of trading days Contingent And Earnout Shares, Scenario Contingent And Earnout Shares, Scenario [Axis] Contingent And Earnout Shares, Scenario [Axis] Contingent And Earnout Shares, Scenario [Domain] Contingent And Earnout Shares, Scenario [Domain] Contingent And Earnout Shares, Scenario [Domain] Contingent And Earnout Shares, Scenario Two Contingent And Earnout Shares, Scenario Two [Member] Contingent And Earnout Shares, Scenario Two Contingent And Earnout Shares, Scenario One Contingent And Earnout Shares, Scenario One [Member] Contingent And Earnout Shares, Scenario One Contingent And Earnout Shares, Scenario Three Contingent And Earnout Shares, Scenario Three [Member] Contingent And Earnout Shares, Scenario Three TCAC Shareholders TCAC Shareholders [Member] TCAC shareholders TCAC Initial Shareholders TCAC Initial Shareholders [Member] TCAC initial shareholders Preferred Stock, Convertible, Conversion Trigger, Percent Of Total Votes Preferred Stock, Convertible, Conversion Trigger, Percent Of Total Votes Percent of total convertible votes PIPE Investors Without Convertible Securities Holdings PIPE Investors Without Convertible Securities Holdings [Member] PIPE Investors without convertible securities holdings PIPE Investors Holding Convertible Notes PIPE Investors Holding Convertible Notes [Member] PIPE Investors holding convertible notes Contingent And Earnout Shares, Stock Price Threshold, Contingency Period Contingent And Earnout Shares, Stock Price Threshold, Contingency Period Contingent and earnout shares, stock price threshold, contingency period (in months) Contingent and earnout shares, stock price threshold, contingency period Preferred Stock, Convertible, Conversion Trigger, Amount Of Initial Public Offering Preferred Stock, Convertible, Conversion Trigger, Amount Of Initial Public Offering Convertible amount of initial public offering Sponsor Escrow Agreement, Sponsor Earnout Shares Sponsor Escrow Agreement, Sponsor Earnout Shares Sponsor earnout shares (in shares) Contingent And Earnout Shares, Stock Price Threshold, Trading Days Period Contingent And Earnout Shares, Stock Price Threshold, Trading Days Period Contingent and earnout shares, stock price threshold, trading days period Sponsor Escrow Agreement, Stock Price Trigger, Threshold Trading Day Period Sponsor Escrow Agreement, Stock Price Trigger, Threshold Trading Day Period Number of consecutive trading days Contingent And Earnout Shares To Be Issued Contingent And Earnout Shares To Be Issued Contingent and earnout shares, to be issued (in shares) Contingent And Earnout Shares, Stock Price Threshold Contingent And Earnout Shares, Stock Price Threshold Contingent and earnout shares, stock price threshold (usd per share) Contingent and earnout shares, stock price threshold (in dollars per share) Series Seed Preferred Stock Series Seed Preferred Stock [Member] Series Seed Preferred 2023 Incentive Plan 2023 Incentive Plan [Member] 2023 Incentive Plan Working Capital Working Capital Working capital Working capital deficit Two Customers Two Customers [Member] Two Customers One Customer One Customer [Member] One Customer Two Vendor Two Vendor [Member] Two Vendor One Vendor One Vendor [Member] One Vendor Secured Convertible Notes Secured Convertible Notes [Member] Secured Convertible Notes Senior Secured Original Issue Discount Convertible Note, Tranche One Senior Secured Original Issue Discount Convertible Note, Tranche One [Member] Senior Secured Original Issue Discount Convertible Note Tranche One Deferred Financial Advisory Fees, Current Deferred Financial Advisory Fees, Current Deferred financial advisory fees Financing Receivable, before Allowance for Credit Loss, Noncurrent, Interest Rate Financing Receivable, before Allowance for Credit Loss, Noncurrent, Interest Rate Note receivable, interest rate (as percent) Note receivable, interest rate Convertible Note Receivable, Accrued Interest Convertible Note Receivable, Accrued Interest [Member] Convertible Note Receivable, Accrued Interest Deferred Payroll Tax Credit, CARES Act Deferred Payroll Tax Credit, CARES Act [Policy Text Block] Deferred Payroll Tax Credits Term Note And 8.00% Convertible Note Term Note And 8.00% Convertible Note [Member] Term Note And 8.00% Convertible Note The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. Debt Disclosures [Text Block] SENIOR SECURED CONVERTIBLE NOTES Debt Instrument, Debt Default, Conversion Ratio Debt Instrument, Debt Default, Conversion Ratio Debt default conversion ratio Debt Instrument, Interest Payment Grace Period Debt Instrument, Interest Payment Grace Period Interest payment grace period Debt Instrument, Debt Default, Conversion, Percent Of Principal Debt Instrument, Debt Default, Conversion, Percent Of Principal Percentage of principal amount of convertible notes Debt Instrument, Convertible, Shares Issued In Lieu Of Payment, Conversion Price Per Share Debt Instrument, Convertible, Shares Issued In Lieu Of Payment, Conversion Price Per Share Conversion price per share (in dollars per shares) Debt Instrument, Convertible, Shares Issued In Lieu Of Payment, Conversion Into Shares, Volume-Weighted Average Share Price, Percent Debt Instrument, Convertible, Shares Issued In Lieu Of Payment, Conversion Into Shares, Volume-Weighted Average Share Price, Percent Volume-weighted average price Proceeds From Social Security Tax, Employer, Deferral, CARES Act Proceeds From Social Security Tax, Employer, Deferral, CARES Act Amounts from deferred payroll tax credits Operating Expenses Offset, Social Security Tax, Employer, Deferral, CARES Act Operating Expenses Offset, Social Security Tax, Employer, Deferral, CARES Act Operating expenses offset Two Customer Two Customer [Member] Two Customer Three Vendor Three Vendor [Member] Three Vendor