Summary of Significant Accounting Policies (Details 5) (Stock Options, USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended
	May 02, 2015	Jan. 31, 2015
Stock Options
Shares
Outstanding at the beginning of the period (in shares)	1,185,767
Granted (in shares)	15,000
Exercised/cancellations for net settlements (in shares)	(115,932)
Expired/forfeited (in shares)	(46,167)
Outstanding at the end of the period (in shares)	1,038,668	1,185,767
Vested and Exercisable at the end of the period (in shares)	680,833
Weighted Average Price
Outstanding at the beginning of the period (in dollars per share)	$ 15.89
Granted (in dollars per share)	$ 19.64
Exercised (in dollars per share)	$ 14.74
Canceled/forfeited (in dollars per share)	$ 14.84
Outstanding at the end of the period (in dollars per share)	$ 16.12	$ 15.89
Vested and Exercisable at the end of the period (in dollars per share)	$ 16.96
Weighted Average Remaining Contractual Term (in years)
Outstanding	3 years 3 months 15 days	3 years 5 months 27 days
Vested and Exercisable at the end of the period	2 years 5 months 5 days
Aggregate Intrinsic Value
Outstanding at the end of the period (in dollars)	$ 5,826	$ 2,910
Vested and Exercisable at the end of the period (in dollars)	3,256
Unrecognized stock-based compensation
Unrecognized stock-based compensation expense (in dollars)	899
Weighted average period for recognition of unrecognized stock-based compensation expense	1 year 7 months 21 days
Total fair value of vested options (in dollars)	$ 204