Earnings Per Share (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 per common share
Net income	$ 9,090	$ 7,669	$ 20,693	$ 17,289
Weighted average basic common shares outstanding	24,420	24,415	24,458	24,394
Impact of dilutive securities	602	665	621	672
Weighted average diluted common shares outstanding	25,022	25,080	25,079	25,066
Per common share:
Basic income per common share	$ 0.37	$ 0.31	$ 0.85	$ 0.71
Diluted income per common share	$ 0.36	$ 0.31	$ 0.83	$ 0.69