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Document And Entity Information
Dec. 08, 2025
Document Information [Line Items]  
Entity, Registrant Name SPAR Group, Inc.
Document, Type 8-K
Document, Period End Date Dec. 08, 2025
Entity, Incorporation, State or Country Code DE
Entity, File Number 0-27408
Entity, Tax Identification Number 33-0684451
Entity, Address, Address Line One 110 East Boulevard
Entity, Address, Address Line Two Suite 1600
Entity, Address, City or Town Charlotte
Entity, Address, State or Province NC
Entity, Address, Postal Zip Code 28203
City Area Code 704
Local Phone Number 837-1651
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock
Trading Symbol SGRP
Security Exchange Name NASDAQ
Entity, Emerging Growth Company false
Amendment Flag false
Entity, Central Index Key 0001004989