Document and Entity Information	6 Months Ended
	Aug. 03, 2013	Aug. 28, 2013
Entity Information [Line Items]
Entity Registrant Name	BANK JOS A CLOTHIERS INC /DE/
Entity Central Index Key	0000920033
Current Fiscal Year End Date	--02-01
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q/A
Document Period End Date	Aug. 03, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		27,988,392