Earnings per Share, Basic and Diluted - Computation of Basic and Diluted Earnings per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Aug. 02, 2014	Aug. 03, 2013	Aug. 02, 2014	Aug. 03, 2013
Earnings Per Share [Abstract]
Net income	$ 7,456	$ 4,739	$ 9,952	$ 7,237
Weighted average common shares for basic earnings per share	28,776	29,842	28,819	29,770
Dilutive effect of stock options and restricted stock	281	390	363	451
Weighted average common shares for diluted earnings per share	29,057	30,232	29,182	30,221
Basic earnings per share	$ 0.26	$ 0.16	$ 0.35	$ 0.24
Diluted earnings per share	$ 0.26	$ 0.16	$ 0.34	$ 0.24