Net (Loss) Income Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 28, 2012	Jul. 30, 2011	Jul. 28, 2012	Jul. 30, 2011
Net (loss) income per share, basic:
Net (loss) income	$ (12,369)	$ 2,198	$ (12,642)	$ 10,211
Less: Undistributed earnings allocable to participating securities		(59)		(249)
Net (loss) income per share, basic	(12,369)	2,139	(12,642)	9,962
Net (loss) income per share, basic shares	88,585,063	95,731,926	88,536,020	97,324,336
Net (loss) income per share, basic per share	$ (0.14)	$ 0.02	$ (0.14)	$ 0.10
Net (loss) income per share, diluted:
Net (loss) income	(12,369)	2,198	(12,642)	10,211
Less: Undistributed earnings allocable to participating securities diluted		(59)		(249)
Effect of Dilutive Securities		103,118		75,013
Net (loss) income per share, diluted	$ (12,369)	$ 2,139	$ (12,642)	$ 9,962
Net (loss) income per share, diluted shares	88,585,063	95,835,044	88,536,020	97,399,349
Net (loss) income per share, diluted per share	$ (0.14)	$ 0.02	$ (0.14)	$ 0.10