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Shares Reserved for Future Issuance BUSINESS COMBINATION Reverse Recapitalization Disclosure [Text Block] Reverse Recapitalization Disclosure Cover [Abstract] Schedule of Long-Term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Level 3 Fair Value, Inputs, Level 3 [Member] Percentage of amount of shares of common stock Share-Based Compensation Arrangement by Share-Based Payment Award, Percentage of Outstanding Stock Maximum STOCK BASED COMPENSATION Share-Based Payment Arrangement [Text Block] REVENUE RECOGNITION CONTRACT ASSETS AND LIABILITIES Revenue from Contract with Customer [Text Block] Contract assets Increase (Decrease) in Contract with Customer, Asset Total liabilities and stockholders’ equity Liabilities and Equity Schedule Of Reverse Recapitalization [Table] Schedule of Reverse Recapitalization [Table] Schedule of Reverse Recapitalization Long-Term Debt, Type [Axis] Long-Term Debt, Type [Axis] Related Party [Axis] Related Party [Axis] Organization, Consolidation and Presentation of Financial Statements [Abstract] Legacy SpringBig shareholders SpringBig SpringBig Inc Initial Shareholders [Member] SpringBig Inc Initial Shareholders Business combination, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Level 2 Fair Value, Inputs, Level 2 [Member] Current Fiscal Year End Date Current Fiscal Year End Date Vesting [Axis] Vesting [Axis] Diluted (in dollars per share) Net loss per common share, diluted (in dollars per share) Earnings Per Share, Diluted Tranche Two Share-Based Payment Arrangement, Tranche Two [Member] Award vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Schedule of Stock Issued and Outstanding Schedule of Stock by Class [Table Text Block] Fair value gain on warrants Fair Value Adjustment of Warrants Contract assets consisted of the following as of: Capitalized Contract Cost [Abstract] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Total current liabilities Liabilities, Current Schedule of Accounts Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Customer Concentration Risk Customer Concentration Risk [Member] Net cash after closing Net cash after closing Reverse Recapitalization, Net Reverse Recapitalization, Net Entity Ex Transition Period Entity Ex Transition Period Number of trading days Sponsor Escrow Agreement, Stock Price Trigger, Threshold Trading Days Sponsor Escrow Agreement, Stock Price Trigger, Threshold Trading Days WARRANT LIABILITIES Derivatives and Fair Value [Text Block] Revenue from Contract with Customer Benchmark Revenue from Contract with Customer Benchmark [Member] Entity Address, Address Line Two Entity Address, Address Line Two Entity Address, Address Line One Entity Address, Address Line One Cost of revenues Cost of Revenue Product and Service [Axis] Product and Service [Axis] Bad debt expense Provision for Loan, Lease, and Other Losses Class of Stock [Domain] Class of Stock [Domain] Unbilled receivables Unbilled Contracts Receivable Fair Value Disclosures [Abstract] Business combination, net of issuing cost Proceeds From Reverse Recapitalization Proceeds From Reverse Recapitalization Derivative Instruments and Hedging Activities Disclosure [Abstract] CONVERTIBLE NOTE RECEIVABLE Loans, Notes, Trade and Other Receivables, Excluding Allowance for Credit Losses [Text Block] Equity [Abstract] TCAC initial shareholders TCAC Initial Shareholders [Member] TCAC Initial Shareholders Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Entity Tax Identification Number Entity Tax Identification Number Loss before income tax Income (Loss) Attributable to Parent, before Tax Schedule of Short-Term Debt [Table] Schedule of Short-Term Debt [Table] Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Beaches Development Group LTD - Sellers Who Entered Into Employment Contracts Beaches Development Group LTD - Sellers Who Entered Into Employment Contracts [Member] Beaches Development Group LTD - Sellers Who Entered Into Employment Contracts Revenue from Contract with Customer [Abstract] Stock-based compensation APIC, Share-Based Payment Arrangement, Option, Increase for Cost Recognition Schedule Of Reverse Recapitalization [Line Items] Schedule Of Reverse Recapitalization [Line Items] Schedule Of Reverse Recapitalization [Line Items] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Entity Central Index Key Entity Central Index Key Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Interest income Investment Income, Interest Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Derivative liability measurement input Derivative Liability, Measurement Input Fair value of purchase consideration Business Combination, Consideration Transferred Concentrations of Credit Risk Concentration Risk, Credit Risk, Policy [Policy Text Block] Majority Shareholder Majority Shareholder [Member] Accrued expenses Other Accrued Liabilities, Current Measurement Input Type [Axis] Measurement Input Type [Axis] Entity [Domain] Entity [Domain] Accounts payable and other liabilities Increase (Decrease) in Other Accounts Payable and Accrued Liabilities City Area Code City Area Code General and administrative General and Administrative Expense Assets Assets [Abstract] Long-Term Debt, Type [Domain] Long-Term Debt, Type [Domain] Other Commitments [Line Items] Other Commitments [Line Items] Unvested options (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares Statement of Stockholders' Equity [Abstract] Other prepaid expenses Other Prepaid Expense, Current Deferred financial advisory fees Due to Related Parties, Current Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Schedule of Prepaid Expenses and Other Current Assets Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] Net Loss Per Share Earnings Per Share, Policy [Policy Text Block] Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Retail revenue Retail Revenue [Member] Retail Revenue Warrants outstanding (in shares) Class of Warrant or Right, Outstanding Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Convertible note receivable Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, Noncurrent Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Reconciliation of Actual Basic and Diluted Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] DESCRIPTION OF BUSINESS Business Description and Basis of Presentation [Text Block] Customer [Domain] Customer [Domain] Warrant liabilities Derivative liability, noncurrent Derivative Liability, Noncurrent