Stockholders' Equity (2008 Equity Incentive Plan) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015	Jan. 31, 2009
Number of shares
Granted (in shares)	0	0	0
Employee Stock Option [Member]
Number of shares
Outstanding at beginning of period (in shares)	310,066
Granted (in shares)	0
Exercised (in shares)	(261,502)
Forfeited (in shares)	0
Outstanding at end of period (in shares)	48,564	310,066
Weighted average exercise price
Outstanding at beginning of period, Weighted average exercise price (in dollars per share)	$ 7.34
Granted (in dollars per share)	0.00
Exercised (in dollars per share)	7.18
Forfeited (in dollars per share)	0.00
Outstanding at end of period, all vested, Weighted average exercise price (in dollars per share)	$ 8.19	$ 7.34
Weighted average remaining contractual term	3 months 25 days
Aggregate intrinsic value	$ 2,775
2008 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Initial share reserve (in shares)				33,000,000
Full value awards (in shares)				24,000,000
Shares available for new restricted stock awards (in shares)	12,100,000