Earnings Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								11 Months Ended	12 Months Ended
	Feb. 01, 2014	Nov. 02, 2013	Aug. 03, 2013	May 04, 2013	Feb. 02, 2013	Oct. 27, 2012	Jul. 28, 2012	Apr. 28, 2012	Jan. 28, 2012	Feb. 01, 2014	Feb. 02, 2013
Numerator (in thousands):
Net income (loss) attributable to Christopher & Banks Corporation	$ (286)	$ 8,612	$ (265)	$ 629	$ (4,050)	$ 3,583	$ (2,197)	$ (13,412)	$ (71,062)	$ 8,690	$ (16,076)
Income allocated to participating securities									(41)	(32)	0
Net income (loss) available to common shareholders									$ (71,103)	$ 8,658	$ (16,076)
Weighted average number of common shares outstanding:
Weighted Average Number of Shares Outstanding, basic									35,554,000	36,246,000	35,694,000
Dilutive shares									0	898,000	0
Weighted Average Number of Shares Outstanding, diluted									35,554,000	37,144,000	35,694,000
Net income (loss) per common share:
Earnings per share, basic	$ (0.01)	$ 0.24	$ (0.01)	$ 0.02	$ (0.11)	$ 0.10	$ (0.06)	$ (0.38)	$ (2.00)	$ 0.24	$ (0.45)
Earnings per share, diluted	$ (0.01)	$ 0.23	$ (0.01)	$ 0.02	$ (0.11)	$ 0.10	$ (0.06)	$ (0.38)	$ (2.00)	$ 0.23	$ (0.45)
Stock options excluded from the shares used in the computation of diluted earnings per share									2,800,000	500,000	3,700,000