XML 26 R1.htm IDEA: XBRL DOCUMENT v3.2.0.727
Document and Entity Information - shares
 6 Months Ended
Jul. 04, 2015
Aug. 13, 2015
Document and Entity Information [Abstract]    
Entity Registrant Name BlueLinx Holdings Inc.  
Entity Central Index Key 0001301787  
Trading Symbol bxc  
Current Fiscal Year End Date --01-02  
Entity Filer Category Smaller Reporting Company  
Entity Common Stock, Shares Outstanding   89,457,557
Document Type 10-Q  
Document Period End Date Jul. 04, 2015  
Amendment Flag false  
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus Q2