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Cover Page - USD ($)
 12 Months Ended
Dec. 31, 2022
Feb. 17, 2023
Jul. 02, 2022
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2022    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-32383    
Entity Registrant Name BlueLinx Holdings Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 77-0627356    
Entity Address, Address Line One 1950 Spectrum Circle, 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    
Title of 12(b) Security Common stock, par value $0.01 per share    
Trading Symbol BXC    
Security Exchange Name NYSE    
Entity Well-Known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 663,925,209
Entity Common Stock, Shares Outstanding   9,058,661  
Documents Incorporated by Reference Part III of this Annual Report on Form 10-K incorporates by reference to the registrant’s definitive Proxy Statement, to be filed with the Securities and Exchange Commission within 120 days of the close of the fiscal year ended December 31, 2022.    
Entity Central Index Key 0001301787    
Amendment Flag false    
Document Fiscal Year Focus 2022    
Document Fiscal Period Focus FY