Components of Basic and Diluted Earnings (Loss) Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Aug. 03, 2013	Jul. 28, 2012	Aug. 03, 2013	Jul. 28, 2012
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Net income (loss)	$ 4,267	$ (1,156)	$ 6,575	$ 4,757
Weighted average basic shares outstanding	27,727	27,280	27,710	23,640
Dilutive effect of stock options and restricted stock	353		343	457
Weighted average common shares for diluted earnings (loss) per share	28,080	27,280	28,053	24,097
Basic earnings (loss) per share	$ 0.15	$ (0.04)	$ 0.24	$ 0.20
Diluted earnings (loss) per share	$ 0.15	$ (0.04)	$ 0.23	$ 0.20