Document and Entity Information - shares
3 Months Ended
May 04, 2019
Jun. 07, 2019
Document And Entity Information    
Entity Registrant Name Christopher & Banks Corporation  
Entity Central Index Key 0000883943  
Current Fiscal Year End Date --02-01  
Entity Filer Category Non-accelerated Filer  
Document Type 10-Q  
Document Period End Date May 04, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Entity Emerging Growth Company false  
Entity Small Business true  
Entity Shell Company false  
Entity Current Reporting Status Yes  
Entity Common Stock, Shares Outstanding   38,191,291