Earnings Per Share Data (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
Basic:
Net income	$ 36,491	$ 31,022	$ 153,701	$ 126,005
Weighted average shares of common stock outstanding	46,327,000	48,288,000	46,632,000	48,834,000
Basic earnings per share (in dollars per share)	$ 0.79	$ 0.64	$ 3.30	$ 2.58
Diluted:
Net income	$ 36,491	$ 31,022	$ 153,701	$ 126,005
Weighted average shares of common stock outstanding	46,327,000	48,288,000	46,632,000	48,834,000
Dilutive effect of stock-based compensation (in shares)		944,000		937,000
Total weighted average equivalent shares	46,327,000	49,232,000	46,632,000	49,771,000
Diluted earnings per share (in dollars per share)	$ 0.79	$ 0.63	$ 3.30	$ 2.53
Total stock options outstanding (in shares)	0	2,100,000	0	2,100,000