Effect of Recording Stock-Based Compensation (Detail) (USD $)	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$ 4,244,000	$ 4,373,000	$ 4,235,000
Tax effect on stock-based compensation expense	(1,522,000)	(1,594,000)	(1,555,000)
Net effect on net income or loss	2,722,000	2,779,000	2,680,000
Employee and director stock options and awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	4,003,000	4,205,000	4,060,000
Non-employee stock award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	25,000
Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation expense	$ 216,000	$ 168,000	$ 175,000