Stock-Based Compensation (Stock Option Activity) (Details) - Stock Options [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended
	Oct. 31, 2015	Nov. 01, 2014
Number of shares
Outstanding at January 31, 2015	1,038
Granted	0	0
Exercised	(657)
Forfeited	0
Outstanding at October 31, 2015, all vested	381
Weighted average exercise price
Outstanding at January 31, 2015 (in dollars per share)	$ 7.05
Granted (in dollars per share)	0.00
Exercised (in dollars per share)	6.92
Forfeited (in dollars per share)	0.00
Outstanding at October 31, 2015 (in dollars per share)	$ 7.27
Weighted average remaining contractual term	8 months 19 days
Aggregate intrinsic value	$ 16,485