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Cover Page
Nov. 02, 2021
Aug. 03, 2021
Mar. 03, 2021
Cover [Abstract]      
Document Type   8-K  
Document Period End Date Nov. 02, 2021    
Entity Registrant Name   BlueLinx Holdings Inc  
Entity Incorporation, State or Country Code   DE  
Entity File Number   001-32383  
Entity Tax Identification Number   77-0627356  
Entity Address, Address Line One   1950 Spectrum Circle  
Entity Address, Address Line Two   Suite 300  
Entity Address, City or Town   Marietta  
Entity Address, State or Province   GA  
Entity Address, Postal Zip Code   30067  
City Area Code   770  
Local Phone Number   953-7000  
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, par value $0.01 per share  
Trading Symbol   BXC  
Security Exchange Name   NYSE  
Amendment Flag     false
Entity Central Index Key     0001301787