NET INCOME PER COMMON SHARE (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 30, 2011	Oct. 31, 2010	Oct. 30, 2011	Oct. 31, 2010
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income	$ 112,239	$ 99,848	$ 236,635	$ 1,611
Common stock dividends paid to holders of Series A convertible preferred stock	(157)	(157)	(471)	(314)
Allocation of income to Series A convertible preferred stock	(6,434)	(5,791)	(13,442)	0
Net income available to common stockholders for basic net income per common share	$ 105,648	$ 93,900	$ 222,722	$ 1,297
Weighted average common shares outstanding for basic net income per common share	67,225	66,140	67,051	61,431
Weighted average impact of dilutive securities	1,549	1,438	1,568	1,414
Weighted average impact of dilutive warrant	0	69	0	97
Weighted average impact of assumed convertible preferred stock conversion	4,189	4,189	4,189	0
Total shares for diluted net income per common share	72,963	71,836	72,808	62,942
Basic net income per common share (in dollars per share)	$ 1.57	$ 1.42	$ 3.32	$ 0.02
Diluted net income per common share (in dollars per share)	$ 1.54	$ 1.39	$ 3.25	$ 0.02
Weighted average antidilutive securities	426	376	356	437
Series A Convertible Preferred Stock [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted average antidilutive securities				2,747