Document and Entity Information - shares	9 Months Ended
	Oct. 31, 2015	Dec. 04, 2015
Document And Entity Information
Document Period End Date	Oct. 31, 2015
Christopher & Banks Corp	Christopher & Banks Corporation
Entity Central Index Key	0000883943
Current Fiscal Year End Date	--01-30
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Current Reporting Status	Yes
Entity Common Stock, Shares Outstanding		37,236,842