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
Basic EPS:
Net income	$ 11,662	$ 10,013	$ 11,244	$ 9,552
Less: Allocation of earnings to participating securities	(173)	(133)	(151)	(85)
Net income allocated to common shares	11,489	9,880	11,093	9,467
Basic weighted average shares outstanding (in shares)	31,010	34,236	30,773	35,258
Basic EPS (in dollars per share)	$ 0.37	$ 0.29	$ 0.36	$ 0.27
Diluted EPS:
Net income	11,662	10,013	11,244	9,552
Less: Allocation of earnings to participating securities	(172)	(132)	(150)	(85)
Net income allocated to common shares	$ 11,490	$ 9,881	$ 11,094	$ 9,467
Basic weighted average shares outstanding (in shares)	31,010	34,236	30,773	35,258
Add: Dilutive effect of stock awards	215	399	215	467
Diluted weighted average shares outstanding (in shares)	31,225	34,635	30,988	35,725
Diluted EPS (in dollars per share)	$ 0.37	$ 0.29	$ 0.36	$ 0.27
Stock option and SARs [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of anti-dilutive stock options and SARs outstanding (in shares)	1,341	1,801	1,472	1,787