Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 30, 2016	May. 02, 2015
Numerator (in thousands):
Net loss attributable to Christopher & Banks Corporation	$ (167)	$ (1,442)
Denominator (in thousands):
Weighted average common shares outstanding - basic	36,922	36,845
Weighted average common and common equivalent shares outstanding - diluted	36,922	36,845
Net loss per common share:
Basic	$ 0.00	$ (0.04)
Diluted	$ 0.00	$ (0.04)
Stock options excluded from the shares used in the computation of diluted earnings per share because they were anti-dilutive	2,200	700