Document And Entity Information
Note To Financial Statement Details Textual
Significant Accounting Policies
Note 3 - Supplemental Balance Sheet Information
US federal statutory tax rate
Provision for income taxes at federal statutory rate
Note 4 - Debt
Note 5 - Income Taxes
Note 10 - Related Party Transactions
Note 11 - Share Based Compensation
Note 12 - Segment Information
Note 13 - Earnings Per Share
Note 14 - Leases
Income Tax Disclosure [Text Block]
Note 3 - Supplemental Balance Sheet Information - Summary of Discontinued Operations (Details)
Note 3 - Supplemental Balance Sheet Information - Accounts Receivable (Details)
Note 3 - Supplemental Balance Sheet Information - Activity In Allowance For Credit Losses (Details)
Note 3 - Supplemental Balance Sheet Information - Property and Equipment (Details)
us-gaap_LiabilitiesCurrent
Total current liabilities
Note 3 - Supplemental Balance Sheet Information - Goodwill Rollforward (Details)
Note 3 - Supplemental Balance Sheet Information - Intangible Assets (Details)
Schedule of Debt [Table Text Block]
Note 3 - Supplemental Balance Sheet Information - Annual Amortization Expense (Details)
Note 3 - Supplemental Balance Sheet Information - Accrued Expenses and Other Current Liabilities (Details)
Accrued expenses and other current liabilities
Accrued expenses and other current liabilities
Note 4 - Debt - Summary of Credit and Other Debt Facilities (Details)
Note 4 - Debt - Unused Availability (Details)
Note 5 - Income Taxes - Income Tax Expense (Benefit) (Details)
Note 5 - Income Taxes - Income Taxes Reconciliation (Details)
Note 5 - Income Taxes - Components of Income Taxes Paid (Details)
Note 5 - Income Taxes - Deferred Tax Assets and Liabilities (Details)
Note 5 - Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details)
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding
Note 10 - Related-party Transactions - Transactions Between the Company and Affiliates (Details)
us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred
Business Combination, Consideration Transferred, Liabilities Incurred
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested
Note 11 - Share Based Compensation - Stock Option Activity (Details)
Note 11 - Share Based Compensation - Restricted Stock Activity (Details)
Note 12 - Segment Information - Segment Reporting Information (Details)
The 2020 Plan [Member]
Represents the 2020 plan.
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Note 12 - Segment Information - Assets (Details)
Note 12 - Segment Information - Geographic Data (Details)
Note 13 - Earnings Per Share - Basic and Diluted Earnings Per Share (Details)
Weighted-Average Grant Date Fair Value per Share, Granted (in dollars per share)
Note 14 - Leases - Lease Costs (Details)
Weighted-Average Grant Date Fair Value per Share, Vested (in dollars per share)
Note 14 - Leases - Supplemental Cash Flow Information (Details)
Weighted-Average Grant Date Fair Value per Share, Forefeited (in dollars per share)
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
Note 14 - Leases - Leases Assets and Liabilities (Details)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
Weighted-Average Grant Date Fair Value per Share, Unvested (in dollars per share)
Weighted-Average Grant Date Fair Value per Share, Unvested (in dollars per share)
Note 14 - Leases - Maturity of Lease Liability (Details)
Foreign currency translation adjustments
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
Forfeited shares (in shares)
Notes To Financial Statements
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Unvested shares (in shares)
Unvested shares (in shares)
Notes To Financial Statements [Abstract]
us-gaap_DebtCurrent
Balance
Granted shares (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Vested shares (in shares)
Current portion of long-term debt
USA - Resource Plus Seller Notes (Current)
Executive compensation disallowed under Section 162(m)
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to section 162(m) tax deduction compensation limit on executives.
us-gaap_LoansPayableCurrent
Loans Payable, Current
Other comprehensive income (loss)
Executive compensation disallowed under Section 162(m), rate
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to section 162(m) tax deduction compensation limit on executives.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
Exercisable, weighted-average exercise price (in dollars per share)
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1
Exercisable, weighted average remaining contractual term (Year)
sgrp_DepreciationAndAmortizationExcludingAmortizationOfRightOfUseAssets
Depreciation and amortization
The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets, excluding the amortization of right-of-use assets.
Allowances associated with businesses sold
Represents the allowances on the sale of a business.
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
Exercisable, aggregate intrinsic value
sgrp_DeferredTaxAssetsForeignWithholdingTax
Foreign withholding tax
Amount before allocation of valuation allowances of deferred tax asset attributable to foreign withholding tax.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
Exercised/ cancelled, aggregate intrinsic value
us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Total equity
Balance
Balance
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Exercisable, covered shares (in shares)
Lines of credit and short-term loans
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
Weighted- Average Remaining Contractual Term (Year)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
Aggregate Intrinsic Value
Brazil Joint Venture [Member]
Represents the joint venture in Brazil.
SPAR BSMT [Member]
Represents the SPAR Brasil Servicos de Merchandising e Technolgia S.A.
Oustanding Stock Options and Unvested RSU's [Member]
Represents the outstanding stock options and unvested RSU's.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Weighted- Average Exercise Price (in dollars per share)
Weighted- Average Exercise Price (in dollars per share)
Exercised / cancelled
Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised/cancelled (or share units converted) into shares.
Customer incentives and deposits
Consulting and Administrative Services, RJ Holdings [Member]
Represents the consulting and administrative services from RJ Holdings.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice
Forfeited or expired, weighted-average exercise price (in dollars per share)
us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets
Proceeds from Sales of Business, Affiliate and Productive Assets
Schedule of Goodwill [Table Text Block]
us-gaap_TaxesPayableCurrent
Taxes payable
us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
Exercised/cancelled, weighted-average exercise price (in dollars per share)
Lessee, Operating Leases [Text Block]
Accounts payable
Revolving Credit Facility [Member]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Covered Shares (in shares)
Covered Shares (in shares)
Noncash investment in internal use software, included in accounts payable
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod
Forfeited or expired, covered shares (in shares)
Credit Facility [Axis]
Credit Facility [Domain]
us-gaap_OtherAccruedLiabilitiesCurrent
Other
us-gaap_AccruedSalariesCurrent
Accrued salaries and wages
us-gaap_PolicyTextBlockAbstract
Accounting Policies
sgrp_EscrowReceivable
Escrow Receivable
Amount of escrow receivable.
sgrp_ContingentReceivable
Contingent Receivable
Amount of contingent receivable.
Trade Names [Member]
us-gaap_PaymentsToAcquireProductiveAssets
Purchases of property and equipment and internal use software
Promissory notes issued to Resource Plus non-controlling interest
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)
Stock options and unvested restricted shares (in shares)
us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)
Total
us-gaap_IncomeTaxesPaidNet
sgrp_SegmentedGrossProfit
Segment gross profit
Represents the amount of gross profit before consolidation items.
Product and Service, Other [Member]
Liabilities and equity
Supplemental Balance Sheet Disclosures [Text Block]
us-gaap_Assets
Total Assets
Assets
Supplemental disclosure of cash flows information
Common Stock, Outstanding [Member]
Represents common stock, outstanding.
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Patents [Member]
Preferred Stock [Text Block]
Plan Name [Axis]
Plan Name [Domain]
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
Share-Based Payment Arrangement, Expense, Tax Benefit
Indian Joint Venture [Member]
Represents Indian Joint Venture.
Deferred income taxes
Finite-Lived Intangible Assets by Major Class [Axis]
Share-Based Payment Arrangement [Text Block]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Effect of cross-border tax laws
Award Type [Domain]
us-gaap_MinorityInterestDecreaseFromRedemptions
Purchase of non-controlling interest
Effective Income Tax Rate Reconciliation [Table]
Effect of cross-border tax laws, rate
us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
Loss from discontinued operations, net of tax
Award Type [Axis]
us-gaap_NetIncomeLoss
Net loss attributable to SPAR Group, Inc.
Net loss attributable to SPAR Group, Inc.
us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Less accumulated amortization
us-gaap_FiniteLivedIntangibleAssetsNet
Total, annual amortization
Intangible assets, net
Phantom Share Units (PSUs) [Member]
Restricted Stock Units (RSUs) [Member]
us-gaap_FiniteLivedIntangibleAssetsGross
Intangible assets
Restricted Stock [Member]
us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Net income attributable to non-controlling interest
Share-Based Payment Arrangement, Option [Member]
Antidilutive Security, Excluded EPS Calculation [Table]
us-gaap_CapitalizedComputerSoftwareGross
Capitalized Computer Software, Gross
Antidilutive Securities [Axis]
us-gaap_PreferredStockConvertibleSharesIssuable
Preferred Stock, Convertible, Shares Issuable (in shares)
Antidilutive Securities, Name [Domain]
Aggregate goodwill acquired
us-gaap_PreferredStockConvertibleConversionRatio
Preferred Stock, Convertible, Conversion Ratio
us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit
Sale of business
us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
Comprehensive income attributable to non-controlling interest
Commitments and Contingencies Disclosure [Text Block]
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Less accumulated depreciation and amortization
Property and equipment, net
Property and equipment, net
Goodwill
Property and equipment
Property and equipment
NMS LLC [Member]
Information pertaining to the subsidiary, NMS, LLC.
sgrp_PercentOfOwnershipInterestInSubsidiarySoldByCompany
Percent Of Ownership Interest In Subsidiary Sold By Company
Percent of ownership interest in subsidiary sold by company.
Treasury Stock, Common and Preferred, Shares (in shares)
Number of previously issued common and preferred shares repurchased by the issuing entity and held in treasury.
sgrp_BorrowingBaseAvailabilityForBilledReceivablesPercentage
Borrowing Base Availability for Billed Receivables, Percentage
The percentage of borrowing base availability for billed receivables.
us-gaap_NotesReceivableGross
Financing Receivable, before Allowance for Credit Loss
Net loss
Net loss
Net loss
us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
Comprehensive loss
United States / Canada [Member]
Represents United States / Canada.
Income tax expense
us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation
Income tax expense
us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
Net loss from discontinued operations
Resource Plus, Inc [Member]
Information pertaining to Resource Plus, Inc. ("RPI").
Cash flows from investing activities:
SPAR Marketing Force [Member]
Information related to SPAR Marketing Force, Inc. ("SMF").
sgrp_ProceedsFromSaleOfOwnershipInterest
Proceeds From Sale of Ownership Interest
The amount of cash inflow from the sale of ownership interest.
Earnings Per Share [Text Block]
Loss on disposal of business
Income from discontinued operations
Lessee, Operating Lease, Cash Flows [Table Text Block]
The tabular disclosure of cash flows for lessee operating leases.
Operating lease liabilities
The increase (decrease) during the reporting period in operating lease liabilities.
Related Party Transaction [Table]
us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
Loss from continuing operations
us-gaap_RelatedPartyTransactionAmountsOfTransaction
Related Party Transaction, Amounts of Transaction
Discontinued Operations
Intersegment Eliminations [Member]
CANADA
Related Party Transactions Disclosure [Text Block]
Schedule of Related Party Transactions [Table Text Block]
Income tax expense
Total income tax expense
Consolidation, Variable Interest Entity, Policy [Policy Text Block]
sgrp_NoncontrollingInterestDecreaseFromDeconsolidation1
Sale of international operations
The amount of the reduction or elimination during the period of a noncontrolling interest resulting from the parent's loss of control and deconsolidation of the entity in which one or more outside parties had a noncontrolling interest.
CHINA
us-gaap_IncreaseDecreaseInAccountsPayable
Accounts payable
Debt Instrument, Redemption, Period One [Member]
Debt Instrument, Redemption, Period [Axis]
Federal
us-gaap_IncomeTaxPaidFederalAfterRefundReceived
Debt Instrument, Redemption, Period [Domain]
All Others [Member]
Represents information pertaining to all others.
Unbilled [Member]
Unbilled member.
Non-Trade [Member]
Non trade member.
us-gaap_DebtInstrumentTerm
Debt Instrument, Term (Month)
Schedule Of Property Plant And Equipment [Table Text Block]
Schedule of property plant and equipment table text block.
State
us-gaap_IncomeTaxPaidStateAndLocalAfterRefundReceived
Foreign
us-gaap_IncomeTaxPaidForeignAfterRefundReceived
Sale of treasury shares (in shares)
Number of treasury shares or units reissued. Excludes reissuance of shares or units in treasury for award under share-based payment arrangement.
us-gaap_CashEquivalentsAtCarryingValue
Cash Equivalents, at Carrying Value
Cash and cash equivalents
us-gaap_AllocatedShareBasedCompensationExpense
Share-Based Payment Arrangement, Expense
WB Marketing, Inc [Member]
Represents WB Marketing, Inc.
Marketing and Advertising Services [Member]
Represents marketing and advertising Services
us-gaap_DefinedBenefitPlanContributionsByEmployer
Defined Benefit Plan, Plan Assets, Contributions by Employer
Amendment Flag
us-gaap_ComprehensiveIncomeNetOfTax
Comprehensive loss attributable to SPAR Group, Inc.
City Area Code
Use of Estimates, Policy [Policy Text Block]
us-gaap_GainLossOnSaleOfBusiness
Gain (Loss) on Disposition of Business
Gain on disposal of business
New Accounting Pronouncements, Policy [Policy Text Block]
us-gaap_StockIssuedDuringPeriodSharesTreasuryStockReissued
Sale of treasury shares (in shares)
Accrued expenses, other current liabilities and customer incentives and deposits
us-gaap_TreasuryStockSharesAcquired
Treasury Stock, Shares, Acquired (in shares)
us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Loss on property, plant and equipment disposal
INDIA
us-gaap_SharesOutstanding
Balance (in shares)
Balance (in shares)
Common stock, shares outstanding (in shares)
Preferred Stock, Shares Outstanding (in shares)
Preferred Stock, Shares Outstanding, Ending Balance (in shares)
Current Fiscal Year End Date
us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Debt Instrument, Basis Spread on Variable Rate
Consolidation, Subsidiaries or Other Investments, Consolidated Entities, Policy [Policy Text Block]
us-gaap_DebtInstrumentInterestRateStatedPercentage
Debt Instrument, Interest Rate, Stated Percentage
us-gaap_LeaseCost
Total lease cost
Consolidation, Less-than-Wholly-Owned Subsidiary, Parent Ownership Interest, Effect of Change [Table]
us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Prepaid expenses and other assets
USA / Canada North Mill Capital
JAPAN
Weighted average discount rate - operating leases
us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent
Document Fiscal Period Focus
us-gaap_OperatingLeaseCost
Operating lease cost
Document Fiscal Year Focus
Consolidation, Policy [Policy Text Block]
us-gaap_ShortTermLeaseCost
Short-term lease cost
Customer Contracts And Lists [Member]
Customer contracts and lists member.
Lease, Cost [Table Text Block]
Document Period End Date
Operating leases
us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
Credit And Debt Facilities Unused Availability [Table Text Block]
Credit and debt facilities unused availability table text block.
Weighted average remaining lease term - operating leases (in years) (Year)
us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1
Entity File Number
Entity Emerging Growth Company
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
Document Type
Entity Small Business
Entity Shell Company
us-gaap_DividendsCommonStockCash
Dividends, Common Stock, Cash
Document Information [Line Items]
Document Information [Table]
Entity Public Float
Entity Filer Category
Debt Instrument [Axis]
Entity Current Reporting Status
Restructuring costs and severance
Restructuring costs and severance
Restructuring Charges
Debt Instrument, Name [Domain]
Entity Voluntary Filers
Entity Well-known Seasoned Issuer
SPAR Group [Member]
Represents SPAR Group.
William Bartels [Member]
William Bartels member.
us-gaap_AccountsReceivableNet
Accounts Receivable, after Allowance for Credit Loss
us-gaap_CapitalizedComputerSoftwareAmortization1
Capitalized Computer Software, Amortization
Award Timing MNPI Disclosure [Text Block]
Schedule of Long-Term Debt Instruments [Table]
Office Lease Expenses (RJ Holdings) [Member]
Represents Office Lease Expenses (RJ Holdings).
Percent of consolidated net revenue
Concentration Risk, Percentage
us-gaap_IncreaseDecreaseInAccountsReceivable
Accounts receivable
ecd_AwardTmgMnpiCnsdrdFlag
Award Timing MNPI Considered [Flag]
Entity Tax Identification Number
Entity Central Index Key
Insider Trading Policies and Procedures [Line Items]
Depreciation and amortization
Depreciation and amortization
Depreciation, Depletion and Amortization, Nonproduction
Entity Registrant Name
ecd_InsiderTrdPoliciesProcAdoptedFlag
Insider Trading Policies and Procedures Adopted [Flag]
Entity [Domain]
MEXICO
Customer Concentration Risk [Member]
Legal Entity [Axis]
The 2008 Plan [Member]
The issuance of shares of common stock to SGRP, represented as the 2008 Stock Compensation Plan ("2008 Plan").
Entity Address, Address Line One
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
us-gaap_AmortizationOfIntangibleAssets
Amortization of Intangible Assets
us-gaap_TreasuryStockValueAcquiredCostMethod
Purchase of treasury shares
Entity Address, City or Town
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
Geographic Concentration Risk [Member]
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]
Entity Address, Postal Zip Code
Entity Address, State or Province
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Concentration Risk Type [Axis]
Material Terms of Trading Arrangement [Text Block]
Concentration Risk Type [Domain]
us-gaap_TreasuryStockValue
Treasury stock, at cost 632,485 shares at December 31, 2025 and 1,205,485 Shares at December 31, 2024
us-gaap_StockRepurchasedDuringPeriodShares
Purchase of treasury shares (in shares)
Entity Common Stock, Shares Outstanding
Trading Arrangements, by Individual [Table]
Sale of treasury shares
Sale of treasury shares
us-gaap_AdvertisingExpense
Advertising Expense
Revenue Benchmark [Member]
Accounts Receivable [Member]
Trading Symbol
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Conversion of Series B convertible preferred stock
Conversion of Series B convertible preferred stock (in shares)
Stock Issued During Period, Shares, Conversion of Convertible Securities (in shares)
Local Phone Number
Exercise of stock options (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)
Exercised / cancelled, Shares (in shares)
Unused Availability
us-gaap_TableTextBlock
Notes Tables
us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Line of Credit Facility, Maximum Borrowing Capacity
Related and Nonrelated Parties [Axis]
Related and Nonrelated Parties [Domain]
Selling, general, and administrative expense
Selling, general and administrative expense
Current provision for expected credit losses
Share-based compensation
Line of Credit Facility, Lender [Domain]
Issuance of shares for restricted stock units (in shares)
Stock Issued During Period, Shares, New Issues (in shares)
Premium Adjustments [Member]
Information pertaining to premium adjustments.
Lender Name [Axis]
us-gaap_LiabilitiesAndStockholdersEquity
Total liabilities and equity
Remaining Premium Adjustments [Member]
Information pertaining to remaining premium adjustments.
Issuance of shares for restricted stock units
Stock Issued During Period, Value, New Issues
UNITED STATES
Related Party Transaction [Axis]
Related Party Transaction [Domain]
(Accumulated deficit)/Retained earnings
Accumulated other comprehensive loss
Debt Disclosure [Text Block]
Changes in operating assets and liabilities, net of business disposals:
SOUTH AFRICA
Amortization of debt issuance cost
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
Subsequent Event [Member]
Operating lease liabilities, less current portion
Non-current portion of operating lease liabilities
The 2024 Stock Repurchase Program [Member]
Represents the 2024 Stock Repurchase Program.
Present value of operating lease liabilities
Total operating lease liabilities
Subsequent Event [Table]
Subsequent Event Type [Axis]
Current operating lease liabilities
Current portion of operating lease liability
Defined Benefit Plan [Table]
Subsequent Event Type [Domain]
Retirement Benefits [Text Block]
Subsequent Events [Text Block]
Operating lease right-of-use asset
Operating lease right-of-use assets
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue
Total future operating lease liability
us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
Less: present value discount
Deferred income tax expense (benefit)
Total deferred tax expense (benefit)
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
Thereafter, annual amortization
Fair Value Measurement, Policy [Policy Text Block]
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
2027, annual amortization
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
2028, annual amortization
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
2029, annual amortization
SPAR Japan [Member]
Represents SPAR Japan.
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
2030, annual amortization
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour
2029
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive
2030
Segment Reporting, Policy [Policy Text Block]
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterRollingYearFive
Thereafter
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
2026, annual amortization
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths
2026
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo
2027
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree
2028
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
Other assets
Share based compensation
Lessee, Leases [Policy Text Block]
us-gaap_FiniteLivedIntangibleAssetUsefulLife
Finite-Lived Intangible Asset, Useful Life (Year)
Income Tax, Policy [Policy Text Block]
sgrp_DisposalGroupIncludingDiscontinuedOperationInterestIncomeExpense
Interest expense
Amount of interest income (expense) attributable to disposal group, including, but not limited to, discontinued operation.
Internal Use Software, Policy [Policy Text Block]
Schedule of Finite-Lived Intangible Assets [Table Text Block]
us-gaap_ConversionOfStockSharesIssued1
Conversion of Stock, Shares Issued (in shares)
sgrp_DebtInstrumentFacilityFeeForAnyAdvancesOtherThanUnderRevolvingCreditFacultyPercentage
Debt Instrument, Facility Fee for Any Advances Other Than Under Revolving Credit Faculty, Percentage
Percentage of facility fee for any advances other than under revolving credit facility.
Costs Associated with Exit or Disposal Activity or Restructuring [Policy Text Block]
us-gaap_ConversionOfStockSharesConverted1
Conversion of Stock, Shares Converted (in shares)
us-gaap_SharesIssuedPricePerShare
Shares Issued, Price Per Share (in dollars per share)
Stock Conversion Description [Axis]
Conversion of Stock, Name [Domain]
sgrp_DebtInstrumentFeeForEachIncremental1MillionIncreaseInLoanBalanceInExcessOf21Million
Debt Instrument, Fee for Each Incremental 1 Million Increase in Loan Balance in Excess of $21 Million
Represents fee for each incremental $1 million increase in excess of $21 million.
us-gaap_AssetsCurrent
Total current assets
NM Notes Commencing on 10 October 2022 [Member]
Represents NM notes commencing on October 10, 2022.
Share-Based Payment Arrangement [Policy Text Block]
sgrp_DeferredTaxAssetBusinessInterestLimitation
Business interest limitation
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible business interest limitations.
Service Fees [Member]
Related to service fees.
us-gaap_TreasuryStockCommonShares
Balance (in shares)
Balance (in shares)
Advertising Cost [Policy Text Block]
Interest expense
us-gaap_InterestIncomeExpenseNonoperatingNet
Interest expense
Common stock, $.01 par value: Authorized shares – 47,000,000 Issued and outstanding shares – 23,449,701 at December 31, 2024 and 23,241,000 at December 31, 2023
Adjustments to reconcile net loss to net cash used by operating activities
Common stock, shares authorized (in shares)
Common Stock, Shares Authorized (in shares)
Americas [Member]
Common stock, shares issued (in shares)
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share (in dollars per share)
FRIEDSHELF 401 Proprietary Limited [Member]
Information pertaining to FRIEDSHELF 401 Proprietary Limited.
us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Decrease/(increase) in valuation allowance
Valuation allowance, beginning of year
Valuation allowance, end of year
us-gaap_DeferredTaxAssetsValuationAllowance
Deferred Tax Assets, Valuation Allowance
Valuation allowance
Lessee, Lease, Description [Table]
Statistical Measurement [Domain]
Operating cash flows from operating leases
Maximum [Member]
Minimum [Member]
Ownership [Domain]
Product and Service [Axis]
us-gaap_DeferredTaxAssetsNet
Total deferred tax assets
Product and Service [Domain]
Statistical Measurement [Axis]
Ownership [Axis]
Preferred stock, Series - B. $.01 par value: Authorized and available shares– 2,000,000 Issued and outstanding shares– 0 at December 31, 2024 and 650,000 at December 31, 2023
us-gaap_DeferredTaxAssetsLiabilitiesNet
Net deferred income taxes
Preferred Stock, Shares Issued (in shares)
Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]
Interest paid
Income taxes paid
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]
us-gaap_DeferredTaxAssetsOther
Other
Geographical [Axis]
Geographical [Domain]
us-gaap_DeferredTaxAssetsGross
Total deferred tax assets, gross
Preferred Stock, Shares Authorized (in shares)
Preferred Stock, Shares Authorized (in shares)
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]
us-gaap_DeferredIncomeTaxLiabilities
Total deferred tax liabilities
Preferred Stock, Par or Stated Value Per Share (in dollars per share)
Preferred Stock, Par or Stated Value Per Share (in dollars per share)
One Client [Member]
Relating to one client.
Net revenues
Net revenues
Revenue from Contract with Customer, Including Assessed Tax
Customer [Axis]
Segment, Reconciliation of Other Items from Segments to Consolidated [Table]
Customer [Domain]
Reconciliation of Assets from Segment to Consolidated [Table Text Block]
Software and Software Development Costs [Member]
us-gaap_PropertyPlantAndEquipmentUsefulLife
Property, Plant and Equipment, Useful Life (Year)
Cash flows from operating activities:
Sale of foreign entities, rate
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to disposition of foreign entities.
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Sale of foreign entities
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to the disposition of foreign entities.
us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts
Allowance for credit losses and other receivable
Withholding tax
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to withholding tax.
Revenue [Policy Text Block]
Transaction costs
sgrp_EffectiveIncomeTaxRateReconciliationTransactionCostsAmount
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to transaction costs.
Statement [Line Items]
us-gaap_AccountsReceivableGrossCurrent
Accounts receivable
Transaction costs
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from transaction costs.
us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Less allowance for credit losses
Beginning balance in allowance for credit losses
Ending balance in allowance for credit losses
Furniture and Fixtures [Member]
Accounts receivable, net
Accounts Receivable, net
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
sgrp_DeferredTaxAssetsCapitalizedResearchAndDevelopment
Capitalized software development costs
Amount before allocation of valuation allowances of deferred tax asset attributable to capitalized research and development.
Additional paid-in capital
Leaseholds and Leasehold Improvements [Member]
Subpart F Income, rate
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to Subpart F Income.
us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Share-based compensation expense
Transaction costs, rate
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to transaction costs.
Foreign disregarded income, rate
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign disregarded income.
Subpart F Income
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to Subpart F income.
Withholding tax, rate
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to withholding tax.
AOCI Attributable to Parent [Member]
Foreign disregarded income
Amount of reported income tax expense from difference to expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to foreign disregarded income.
Equity:
Property, Plant and Equipment, Policy [Policy Text Block]
Other expenses, net
us-gaap_OtherNonoperatingIncomeExpense
Other expenses, net
Long-Lived Tangible Asset [Axis]
Long-Lived Tangible Asset [Domain]
Segment Reporting Disclosure [Text Block]
us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Net operating loss carryforwards
us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsResearch
Federal research and development credit
us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
Deferred Tax Assets, Operating Loss Carryforwards, State and Local
Other Receivable [Member]
Related to other receivable.
us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic
Deferred Tax Assets, Operating Loss Carryforwards, Domestic
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash and cash equivalents at beginning of year
Cash and cash equivalents at end of year
Assets
Effect of foreign exchange rate changes on cash
sgrp_DisposalGroupReceivableFromSaleConsideration
Disposal Group, Receivable From Sale Consideration
The receivable from sale consideration from disposal group.
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net (decrease)/increase in cash and cash equivalents
us-gaap_Liabilities
Total Liabilities
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash provided by (used in) financing activities
Commitments and contingencies – See Note 6
Sale of Stock [Axis]
Sale of Stock [Domain]
us-gaap_OperatingIncomeLoss
Operating (loss) income
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash used in operating activities
Prepaid expenses and other current assets
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash (used in) provided by investing activities
us-gaap_DeferredTaxLiabilities
Net deferred income taxes (liabilities)
us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill
Goodwill & intangible assets of subsidiaries
Other cost of revenue (a)
Cost of revenue
Cost of revenue
Segment gross profit
us-gaap_GrossProfit
Gross profit
Services Provided by Affiliates
us-gaap_CostOfGoodsAndServicesSold
Counterparty Name [Axis]
Counterparty Name [Domain]
Consolidation Items [Domain]
Deferred income taxes
us-gaap_DeferredIncomeTaxLiabilitiesNet
Net cash used in discontinued operations
Net cash provided by investing activities of discontinued operations
Net cash used in financing activities of discontinued operations
us-gaap_DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware
Capitalized software development costs
us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Net cash (used in) provided by investing activities of continuing operations
us-gaap_DeferredTaxLiabilitiesLeasingArrangements
Right to use asset
us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Net cash provided by (used in) financing activities of continuing operations
Consolidation Items [Axis]
us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Net cash used in continuing operations
USA/Canada [Member]
Represents information pertaining to lines of credit and short term loans from USA/Canada.
Concentration Risk, Credit Risk, Policy [Policy Text Block]
us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Depreciation
Nonrelated Party [Member]
sgrp_RepaymentOfNotesToSellers
Payment of notes to seller
Represents the repayments of notes to sellers.
sgrp_NumberOfMajorCustomers
Number of Major Customers
Represents number of major customers.
sgrp_PolicyTable
Noncontrolling Interest [Member]
us-gaap_PaymentsForRepurchaseOfCommonStock
Repurchase of common stock
Scenario [Domain]
Forecast [Member]
Retained Earnings [Member]
The 2018 Plan [Member]
Represents information pertaining to the 2018 Stock Compensation Plan ("2018 Plan") offered by the reporting entity.
us-gaap_CurrentStateAndLocalTaxExpenseBenefit
State and local
Proceeds from the sale of treasury shares
us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
State and local
Scenario [Axis]
us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations
State and local
Treasury Stock, Common [Member]
SPAR Canada Company [Member]
Information pertaining to SPAR Canada Company.
us-gaap_CurrentForeignTaxExpenseBenefit
Foreign
Treasury Stock [Policy Text Block]
Disclosure of treasury stock policy.
North Mill, LLC [Member]
Information pertaining to North Mill, LLC.
us-gaap_DeferredForeignIncomeTaxExpenseBenefit
Foreign
us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations
Foreign
Additional Paid-in Capital [Member]
Accrued third party labor
Carrying amount of accrued third party labor, which is expected to be paid within one year of the date of the statement of financial position.
us-gaap_CurrentFederalTaxExpenseBenefit
Federal
us-gaap_DeferredFederalIncomeTaxExpenseBenefit
Federal
Preferred Stock [Member]
us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations
Federal
Equity Components [Axis]
SGRP Meridian [Member]
Represents SGRP Meridian.
Equity Component [Domain]
us-gaap_LongTermDebt
Long-Term Debt
Balance
Mexican Joint Venture [Member]
Represents Mexican Joint Venture.
Stock, Class of Stock [Table]
us-gaap_CurrentIncomeTaxExpenseBenefit
Total current tax expense
us-gaap_EffectiveIncomeTaxRateReconciliationGiltiAmount
GILTI tax
Other Current Liabilities [Member]
us-gaap_EffectiveIncomeTaxRateReconciliationGiltiPercent
GILTI tax, rate
Conversion of Series B Preferred Stock into Common Stock [Member]
Represents conversion of series b preferred stock into common stock.
us-gaap_PaymentsToMinorityShareholders
Payments to acquire noncontrolling interests
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
Foreign
New Jersey Division of Taxation [Member]
Loss before income tax expense
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Loss before income tax expense
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
Domestic
Accounts Receivable, Allowance for Credit Loss [Table Text Block]
Operating Lease, Leases Asset and Liability [Table Text Block]
Tabular disclosure of operating lease lease asset and liability.
ICFR Auditor Attestation Flag
us-gaap_IncomeLossIncludingPortionAttributableToNoncontrollingInterest
Income (loss) before income taxes
sgrp_StockIssuedDuringPeriodValueStockOptionsExercisedNet
Exercise of stock options
Value of stock issued as a result of the exercise of stock options.
Income Tax Authority, Name [Axis]
Income Tax Authority, Name [Domain]
Internal Revenue Service (IRS) [Member]
Income Tax Jurisdiction [Axis]
Income Tax Jurisdiction [Domain]
Domestic Tax Jurisdiction [Member]
Foreign Tax Jurisdiction [Member]
Equipment [Member]
Document Annual Report
Trade and Other Accounts Receivable, Unbilled Receivables, Policy [Policy Text Block]
Cash and Cash Equivalents, Policy [Policy Text Block]
Statement of Financial Position Location, Balance [Axis]
Statement of Financial Position Location, Balance [Domain]
Software Development [Member]
Entity Incorporation, State or Country Code
us-gaap_DebtInstrumentCarryingAmount
Long-Term Debt, Gross
us-gaap_UnrecognizedTaxBenefits
Beginning balance
Ending balance
us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
Unrecognized Tax Benefits that Would Impact Effective Tax Rate
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]
Document Transition Report
Document Financial Statement Error Correction [Flag]
Entity Interactive Data Current
Related Party [Member]
sgrp_IncomeTaxRateReconciliationPermanentDifferences
Permanent differences
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to permanent differences.
Security Exchange Name
us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
Additions based on tax positions related to the current year
Title of 12(b) Security
us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs
Write-offs charged against the allowance
us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued
Unrecognized Tax Benefits, Income Tax Penalties Accrued
us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued
Unrecognized Tax Benefits, Interest on Income Taxes Accrued
sgrp_EffectiveIncomeTaxRateReconciliationPermanentDifferences
Permanent differences, rate
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to permanent differences.
Meridian [Member]
Information pertaining to SGRP Meridian (Pty), Ltd. ("Meridian").
Receivable Type [Axis]
Receivable [Domain]
us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense
Unrecognized Tax Benefits, Income Tax Penalties Expense
Trade Accounts Receivable [Member]
us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense
Unrecognized Tax Benefits, Interest on Income Taxes Expense
Common Stock [Text Block]
The entire disclosure for common stock.
sgrp_DeferredTaxAssetsOperatingLeaseLiability
Operating lease liability
Amount before allocation of valuation allowances of deferred tax asset attributable to operating lease liability.
sgrp_OperatingLossCarryforwardsSubjectToExpiration
Operating Loss Carryforwards, Subject to Expiration
Amount of operating loss carryforward, before tax effects, subject to expiration.
Provision for expected credit losses
Represents credit loss expense net of reversal for accounts receivable.
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Auditor Name
us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Subsidiary, Ownership Percentage, Noncontrolling Owner
Auditor Firm ID
Auditor Location
us-gaap_TaxCreditCarryforwardAmount
Tax Credit Carryforward, Amount
Research Tax Credit Carryforward [Member]
us-gaap_SharePrice
Share Price (in dollars per share)
us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)
us-gaap_RepaymentsOfLinesOfCredit
Repayments under lines of credit
Shares used in diluted net loss per share calculations (in shares)
Weighted average common shares – diluted (in shares)
Proceeds from long-term debt
Tax Credit Carryforward [Axis]
Capitalized Software Costs [Member]
Represents capitalized software costs.
Tax Credit Carryforward, Name [Domain]
us-gaap_OperatingLossCarryforwards
Operating Loss Carryforwards
Borrowings under lines of credit
PC Group Loan [Member]
PC Group Loan
sgrp_LineOfCreditFacilityMinimumOutstandingAmount
Line of Credit Facility, Minimum Outstanding Amount
Minimum amount borrowed under the credit facility during the period.
Statement [Table]
us-gaap_MinorityInterestOwnershipPercentageByParent
Subsidiary, Ownership Percentage, Parent
Diluted loss per common share attributable to SPAR Group, Inc. from discontinued operations (in dollars per share)
Statement of Financial Position [Abstract]
Diluted loss per common share attributable to SPAR Group, Inc. (in dollars per share)
Diluted loss per common share attributable to SPAR Group, Inc. (in dollars per share)
Shares used in basic net loss per share calculation (in shares)
Weighted average common shares – basic (in shares)
sgrp_DeferredTaxLiabilitiesAllowanceForCreditLosses
Allowance for credit losses and other receivable
Amount of deferred tax liability attributable to taxable temporary differences related to the allowance for credit losses.
sgrp_RelatedPartyTransactionAmountsOfTransactionMonthly
Related Party Transaction, Amounts of Transaction, Monthly
Amount of transactions with related party during the financial reporting period.
us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Other, rate
Diluted loss per common share attributable to SPAR Group, Inc. from continuing operations (in dollars per share)
Indiana Department of Revenue [Member]
Indiana Department of Revenue
Schedule of Income Taxes Paid [Table Text Block]
Tabular disclosure of income taxes paid.
us-gaap_EffectiveIncomeTaxRateContinuingOperations
Effective Tax Rate:, rate
Stock Related to PC Group Loan [Member]
Stock Related to PC Group Loan
Basic loss per common share attributable to SPAR Group, Inc. from discontinued operations (in dollars per share)
Business Combination [Axis]
Basic loss per common share attributable to SPAR Group, Inc. (in dollars per share)
Basic loss per common share attributable to SPAR Group, Inc. (in dollars per share)
Depreciation and amortization
us-gaap_DisposalGroupIncludingDiscontinuedOperationDepreciationAndAmortization
Credit Loss, Financial Instrument [Policy Text Block]
Business Combination [Domain]
William H. Bartels Independent Contractor Agreement [Member]
William H. Bartels Independent Contractor Agreement
Selling, general, and administrative expenses
us-gaap_DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense
Return to provision, rate
Return to provision adjustment, rate
Basic loss per common share attributable to SPAR Group, Inc. from continuing operations (in dollars per share)
us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss
Income from operations before tax
Changes in valuation allowance, rate
Change in Valuation Allowance, rate
Product and Service, Excluding Other [Member]
Product and Service, Excluding Other
Other State Departments of Revenue [Member]
Other State Departments of Revenue
us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
Net revenues
Statement of Cash Flows [Abstract]
Texas Department of Revenue [Member]
Texas Department of Revenue
us-gaap_DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold
Cost of revenues
Other permanent differences
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.
us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss
Gross Profit
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]
Mississippi Department of Revenue [Member]
Mississippi Department of Revenue
Statement of Stockholders' Equity [Abstract]
us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration
Disposal Group, Including Discontinued Operation, Consideration
Pennsylvania Department of Revenue [Member]
Pennsylvania Department of Revenue
Income Statement [Abstract]
North Carolina Department of Revenue [Member]
North Carolina Department of Revenue
Disposal Groups, Including Discontinued Operations [Table Text Block]
Disposal Groups, Including Discontinued Operations [Table]
Disposal Group Name [Axis]
SPAR China [Member]
Represents SPAR China.
Disposal Group Name [Domain]
us-gaap_ProceedsFromIssuanceOfDebt
Proceeds from Issuance of Debt
Other permanent differences, rate
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.
us-gaap_RepaymentsOfDebt
Repayments of Debt
Tax credits, rate
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.
us-gaap_RestructuringReserveCurrent
Restructuring Reserve, Current
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]
Tax credits
Amount of tax credit in effective income tax reconciliation.
sgrp_DeferredTaxAssetsAccruedPayroll
Accrued payroll
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued payroll.
sgrp_OperatingLossCarryforwardsNotSubjectToExpiration
Operating Loss Carryforwards, Not Subject to Expiration
Amount of operating loss carryforward, before tax effects, not subject to expiration.
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
Resource Plus Acquisition Note [Member]
Related to the promissory notes entered into as part of the Resource Plus acquisition.
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Accounting Standards Update and Change in Accounting Principle [Table]
sgrp_IncomeTaxReconciliationDiscontinuedOperationsSgaAllocationPercent
Discontinued operations SG&A allocation, rate
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to discontinued operations and SGA allocation.
Discontinued operations SG&A allocation
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to discontinued operations and SGA allocations.
Client Two [Member]
Client Two
Client One [Member]
Client One
Employee Relocation [Member]
Type of Restructuring [Domain]
us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsForeign
Foreign tax credit, rate
Share Repurchase Program [Domain]
Employee Severance [Member]
Share Repurchase Program [Axis]
State and local income taxes, net of federal income tax effect (1), rate
State income taxes, net of federal benefit, rate
Other Commitments [Table]
us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
Foreign tax rate differential, rate
Restructuring Type [Axis]
us-gaap_IncomeTaxReconciliationOtherAdjustments
Other
srt_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Share Repurchase Program, Authorized, Number of Shares (in shares)
Cash flows from financing activities:
US federal statutory tax rate, rate
Provision for income taxes at federal statutory rate, rate
sgrp_BorrowingBaseAvailabilityForUnbilledReceivablesPercentage
Borrowing Base Availability for Unbilled Receivables, Percentage
The percentage of borrowing base availability for unbilled receivables.
sgrp_DebtInstrumentCovenantUnbilledCap
Debt Instrument, Covenant, Unbilled Cap
The unbilled cap pursuant to the debt agreement.
Return to provision
Return to provision adjustment
Changes in valuation allowance
Change in valuation allowance
USA - Resource Plus Sellers [Member]
Represents USA - Resource Plus Sellers.
Restated US Note [Member]
Represents the amended and restated revolving credit master promissory note.
Restated Canadian Note [Member]
Represents the amended and restated revolving credit master promissory note.
us-gaap_PaymentsForProceedsFromBusinessesAndInterestInAffiliates
Proceeds from sale of international operations, net of cash transferred
Series B Preferred Stock [Member]
NM Note [Member]
Represents information pertaining to NM Note.
us-gaap_ProceedsFromDivestitureOfBusinesses
Proceeds from Divestiture of Businesses
us-gaap_PaymentsToAcquireInterestInJointVenture
Payments to Acquire Interest in Joint Venture
sgrp_MajorityInterestOwnershipPercentageByParent
Majority Interest Ownership Percentage By Parent
The parent entity's majority interest in net assets of the subsidiary, expressed as a percentage.
Amortization of operating lease assets
Other [Member]
Represents information about other expenses related to company's affiliate.
Other comprehensive loss:
CEO Inducement Plan [Member]
Represents CEO Inducement Plan.
Class of Stock [Axis]
Class of Stock [Domain]
Long-term debt
Balance outstanding
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
us-gaap_IncomeTaxReconciliationTaxCreditsForeign
Foreign tax credit
State and local income taxes, net of federal income tax effect (1)
State income taxes, net of federal benefit
us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential
Foreign tax rate differential