Net Income (Loss) Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Aug. 03, 2013	Jul. 28, 2012	Aug. 03, 2013	Jul. 28, 2012
Net income (loss) per share, basic:
Net income (loss)	$ 958	$ (12,369)	$ 4,068	$ (12,642)
Less: Undistributed earnings allocable to participating securities	(12)	0	(46)	0
Net income (loss) per share, basic	946	(12,369)	4,022	(12,642)
Net income (loss) per share, basic shares	85,800,626	88,585,063	87,178,655	88,536,020
Net income (loss) per share, basic	$ 0.01	$ (0.14)	$ 0.05	$ (0.14)
Net income (loss) per share, diluted:
Net income (loss)	958	(12,369)	4,068	(12,642)
Less: Undistributed earnings allocable to participating securities	(12)	0	(46)	0
Net income (loss) per share, diluted	$ 946	$ (12,369)	$ 4,022	$ (12,642)
Effect of dilutive securities, shares	174,403	0	64,757	0
Net income (loss) per share, diluted shares	85,975,029	88,585,063	87,243,412	88,536,020
Net income (loss) per share, diluted	$ 0.01	$ (0.14)	$ 0.05	$ (0.14)