Summary of Significant Accounting Policies (Earnings Per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Feb. 02, 2013	Oct. 27, 2012	Jul. 28, 2012	Apr. 28, 2012	Jan. 28, 2012	Oct. 29, 2011	Jul. 30, 2011	Apr. 30, 2011	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Summary of Significant Accounting Policies [Abstract]
Net income, Basic EPS	$ 20,432	$ 22,602	$ (12,297)	$ 32,145	$ 36,979	$ 17,771	$ (8,369)	$ 28,409	$ 62,882	$ 74,790	$ 47,846
Net income, Effect of dilutive potential common shares									8,485	16,204	0
Net income, Diluted EPS									$ 71,367	$ 90,994	$ 47,846
Weighted-average shares, Basic EPS									149,689	155,149	154,325
Weighted-average shares, Effect of dilutive potential common shares									24,005	45,088	4,088
Weighted-average shares, Diluted EPS									173,694	200,237	158,413
Per share amount, Basic EPS	$ 0.14	$ 0.15	$ (0.08)	$ 0.21	$ 0.24	$ 0.12	$ (0.05)	$ 0.18	$ 0.42	$ 0.48	$ 0.31
Per share amount, Effect of dilutive potential common shares									$ (0.01)	$ (0.03)	$ (0.01)
Per share amount, Diluted EPS	$ 0.13	$ 0.14	$ (0.08)	$ 0.18	$ 0.21	$ 0.11	$ (0.05)	$ 0.16	$ 0.41	$ 0.45	$ 0.30