Earnings (Loss) Per Share (Earnings (Loss) Per Share Reconciliation) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 28, 2012	Jul. 30, 2011	Jul. 28, 2012	Jul. 30, 2011
Earnings (Loss) Per Share
Net income (loss), Basic EPS	$ (12,297)	$ (8,369)	$ 19,848	$ 20,040
Net income (loss), Effect of dilutive potential common shares	0	0	0	0
Net income (loss), Diluted EPS	$ (12,297)	$ (8,369)	$ 19,848	$ 20,040
Weighted-average shares, Basic EPS	151,231	156,733	152,955	156,568
Weighted-average shares, Effect of dilutive potential common shares	0	0	2,981	4,114
Weighted-average shares, Diluted EPS	151,231	156,733	155,936	160,682
Per share amount, Basic EPS	$ (0.08)	$ (0.05)	$ 0.13	$ 0.13
Per share amount, Effect of dilutive potential common shares	$ 0	$ 0	$ 0	$ (0.01)
Per share amount, Diluted EPS	$ (0.08)	$ (0.05)	$ 0.13	$ 0.12