XML 14 R1.htm IDEA: XBRL DOCUMENT v3.5.0.2
Document and Entity Information - shares
9 Months Ended
Oct. 01, 2016
Nov. 10, 2016
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   9,031,263
Document Type 10-Q  
Document Period End Date Oct. 01, 2016  
Amendment Flag false  
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q3