XML 26 R1.htm IDEA: XBRL DOCUMENT v3.3.0.814
Document and Entity Information - shares
 9 Months Ended
Oct. 03, 2015
Nov. 12, 2015
Document and Entity Information [Abstract]    
Entity Registrant Name BlueLinx Holdings Inc.  
Entity Central Index Key 0001301787  
Trading Symbol bxc  
Current Fiscal Year Date --01-02  
Entity Filer Category Smaller Reporting Company  
Entity Common Stock, Shares Outstanding   89,439,556
Document Type 10-Q  
Document Period End Date Oct. 03, 2015  
Amendment Flag false  
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus Q3