Document and Entity Information	9 Months Ended
	Oct. 27, 2012	Nov. 16, 2012
Document and Entity Information
Entity Registrant Name	CHRISTOPHER & BANKS CORP
Entity Central Index Key	0000883943
Document Type	10-Q
Document Period End Date	Oct. 27, 2012
Amendment Flag	false
Current Fiscal Year End Date	--01-28
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		36,983,679
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q3