Summary of Significant Accounting Policies (Details 9) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Aug. 01, 2015	Aug. 02, 2014	Aug. 01, 2015	Aug. 02, 2014	Jan. 31, 2015
Income Taxes
Income tax provision	$ 1,045	$ 1,249	$ 3,087	$ 2,583
Effective tax rate (as a percent)	35.10%	35.70%			32.40%
Amount of unrecognized tax benefits	$ 449		449		$ 449
Amount of unrecognized tax benefit that, if recognized, would affect the effective tax rate	296		296
Total amount of interest and penalties recognized	5	$ 1
Total amount of accrued interest and penalties	94		94		$ 84
Total amount of anticipated decrease in unrecognized tax benefits in the next 12 months	$ 449		$ 449
Federal tax
Income Taxes
Period of statute of limitations			3 years
State tax
Income Taxes
Period of statute of limitations			4 years