Document And Entity Information	3 Months Ended
	Feb. 02, 2014	Mar. 07, 2014
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Feb. 02, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q1
Trading Symbol	NCS
Entity Common Stock, Shares Outstanding		73,570,925
Entity Registrant Name	NCI BUILDING SYSTEMS INC
Entity Central Index Key	0000883902
Current Fiscal Year End Date	--11-03
Entity Filer Category	Accelerated Filer