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Cover
Dec. 26, 2021
Feb. 08, 2021
Aug. 05, 2020
Cover [Abstract]      
Document Type   8-K  
Document Period End Date   Feb. 08, 2021  
Entity Registrant Name   BGSF, INC.  
Entity Incorporation, State or Country Code   DE  
Entity File Number   001-36704  
Entity Tax Identification Number   26-0656684  
Entity Address, Address Line One   5850 Granite Parkway, Suite 730  
Entity Address, City or Town   Plano  
Entity Address, State or Province   TX  
Entity Address, Postal Zip Code   75024  
City Area Code   972  
Local Phone Number   692-2400  
Written Communications   false  
Soliciting Material   false  
Pre-commencement Tender Offer   false  
Pre-commencement Issuer Tender Offer   false  
Entity Emerging Growth Company     false
Title of 12(b) Security   Common Stock  
Trading Symbol   BGSF  
Security Exchange Name   NYSE  
Entity Central Index Key     0001474903
Amendment Flag     false
Current Fiscal Year End Date --12-26