v3.25.2
Document And Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2024
Mar. 15, 2025
Document Information [Line Items]    
Entity Central Index Key 0001004989  
Entity Registrant Name SPAR GROUP, Inc.  
Amendment Flag true  
Current Fiscal Year End Date --12-31  
Document Fiscal Period Focus FY  
Document Fiscal Year Focus 2024  
Document Type 10-K/A  
Document Annual Report true  
Document Period End Date Dec. 31, 2024  
Document Transition Report false  
Entity File Number 0-27408  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 33-0684451  
Entity Address, Address Line One 1910 Opdyke Court  
Entity Address, City or Town Auburn Hills  
Entity Address, State or Province MI  
Entity Address, Postal Zip Code 48326  
City Area Code 248  
Local Phone Number 364-7727  
Title of 12(b) Security Common Stock, par value $.01 per share  
Trading Symbol SGRP  
Security Exchange Name NASDAQ  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
ICFR Auditor Attestation Flag false  
Document Financial Statement Error Correction [Flag] true  
Document Financial Statement Restatement Recovery Analysis [Flag] true  
Entity Shell Company false  
Entity Public Float $ 25,013,045  
Entity Common Stock, Shares Outstanding   23,449,701
Amendment Description SPAR Group, Inc. (the “Company”) is filing this Amendment No. 1 on Form 10-K/A (this “Form 10-K/A”) to amend and restate certain items in the Annual Report on Form 10-K for the fiscal year ended December 31, 2024, originally filed with the Securities and Exchange Commission (the “SEC”) on May 16, 2025 (the “Original Form 10-K”).  This Form 10-K/A includes audited restated consolidated financial statements as of December 31, 2023 and for the fiscal years ended December 31, 2024 and December 31, 2023, as well as unaudited restated condensed consolidated financial information as of June 30, 2024 and September 30, 2024 and for the three and six months ended June 30, 2024 and 2023 and the three and nine months ended September 30, 2024 and 2023 (collectively, the “Non-Reliance Periods”).  
Auditor Name BDO USA, P.C  
Auditor Location Troy, Michigan  
Auditor Firm ID 243