XML 13 R1.htm IDEA: XBRL DOCUMENT v3.7.0.1
Document and Entity Information - shares
3 Months Ended
Apr. 01, 2017
May 04, 2017
Document and Entity Information [Abstract]    
Entity Registrant Name BlueLinx Holdings Inc.  
Entity Central Index Key 0001301787  
Trading Symbol bxc  
Current Fiscal Year Date --01-30  
Entity Filer Category Smaller Reporting Company  
Entity Common Stock, Shares Outstanding   9,070,317
Document Type 10-Q  
Document Period End Date Apr. 01, 2017  
Amendment Flag false  
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q1