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Document and Entity Information (USD $)
 12 Months Ended
Jan. 04, 2014
Feb. 24, 2014
Jun. 29, 2013
Document and Entity Information [Abstract]      
Entity Registrant Name BlueLinx Holdings Inc.    
Entity Central Index Key 0001301787    
Trading Symbol bxc    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Current Fiscal Year End Date --01-04    
Entity Filer Category Non-accelerated Filer    
Entity Well-Known Seasoned Issuer No    
Entity Common Stock, Shares Outstanding   87,621,553  
Entity Public Float     $ 54,108,842
Document Type 10-K    
Document Period End Date Jan. 04, 2014    
Amendment Flag false    
Document Fiscal Year Focus 2013    
Document Fiscal Period Focus FY