Stock-Based Compensation - Additional Information (Detail) (USD $)	12 Months Ended										1 Months Ended		1 Months Ended			12 Months Ended			1 Months Ended	9 Months Ended	1 Months Ended	3 Months Ended	1 Months Ended		12 Months Ended		1 Months Ended		12 Months Ended		1 Months Ended		1 Months Ended	12 Months Ended				1 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011	Feb. 02, 2013 Cost of goods sold	Jan. 28, 2012 Cost of goods sold	Jan. 29, 2011 Cost of goods sold	Feb. 02, 2013 Selling, General and Administrative Expense	Jan. 28, 2012 Selling, General and Administrative Expense	Jan. 29, 2011 Selling, General and Administrative Expense	Jun. 14, 2006 1996 Equity Incentive Plan	Jun. 14, 2006 1996 Equity Incentive Plan Maximum	Jun. 05, 2012 2006 Equity Incentive Plan	Jun. 05, 2012 2006 Equity Incentive Plan Maximum	Mar. 31, 2012 2006 Equity Incentive Plan Chief Executive Officer	Mar. 31, 2011 2006 Equity Incentive Plan Chief Executive Officer	Feb. 02, 2013 2006 Equity Incentive Plan Chief Executive Officer	Feb. 02, 2013 2006 Equity Incentive Plan Restricted Stock	Jan. 28, 2012 2006 Equity Incentive Plan Restricted Stock	Apr. 30, 2012 2006 Equity Incentive Plan Restricted Stock Independent consultant	Oct. 27, 2012 2006 Equity Incentive Plan Restricted Stock Independent consultant	Feb. 28, 2011 2006 Equity Incentive Plan Restricted Stock Chief Executive Officer	Apr. 30, 2011 2006 Equity Incentive Plan Restricted Stock Chief Executive Officer	Mar. 31, 2012 2006 Equity Incentive Plan Restricted Stock Non Employee Director	Jun. 30, 2011 2006 Equity Incentive Plan Restricted Stock Non Employee Director	Jan. 28, 2012 2006 Equity Incentive Plan Restricted Stock Non Employee Director	Jan. 29, 2011 2006 Equity Incentive Plan Restricted Stock Non Employee Director	Mar. 31, 2009 2006 Equity Incentive Plan Performance Awards	Mar. 31, 2009 2006 Equity Incentive Plan Performance Awards Maximum	Feb. 02, 2013 2006 Equity Incentive Plan Employee Stock Option	Jan. 28, 2012 2006 Equity Incentive Plan Employee Stock Option	Mar. 31, 2011 2006 Equity Incentive Plan Employee Stock Option Employees	Jun. 05, 2012 1996 NEDSOP	Jun. 05, 2012 1996 NEDSOP Maximum	Feb. 02, 2013 2012 Equity Incentive Plan	Feb. 02, 2013 2012 Equity Incentive Plan Maximum	Feb. 02, 2013 2012 Equity Incentive Plan Minimum	Feb. 02, 2013 2012 Equity Incentive Plan Minimum Persons possessing 10% or more of voting power	Jun. 30, 2012 2012 Equity Incentive Plan Restricted Stock Non Employee Director	Feb. 02, 2013 2012 Equity Incentive Plan Restricted Stock Non Employee Director	Jun. 30, 1996 ESPP	Feb. 02, 2013 ESPP	Jan. 28, 2012 ESPP	Jan. 29, 2011 ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant										732,456		942,602																				34,976		4,210,795							652,254
Aggregate number of shares authorized for grant										18,300,000		3,082,456																				720,000								1,350,000
Options, expiration period											10 years		10 years																				10 years		8 years
Exercise price percentage on fair market value of common stock on date of grant																																				100.00%	110.00%
Number of additional shares authorized for grant																																		3,100,000
Stock Purchase Plan discount																																								15.00%
Share based compensation expense	$ 4,244,000	$ 4,373,000	$ 4,235,000	$ 600,000	$ 500,000	$ 600,000	$ 3,600,000	$ 3,900,000	$ 3,600,000											$ 25,000		$ 98,000			$ 189,000	$ 172,000													$ 199,000		$ 216,000	$ 168,000	$ 174,000
Award grants in period																			2,525		17,568		515	25,387				100,000										21,008
Vesting period																															4 years								1 year
Number of options granted	1,863,354													100,000	500,000																314,000
Market value common stock as of grant date																											$ 9.56
Unrecognized expense, weighted average recognition period	2 years 6 months 22 days	2 years 8 months 1 day														3 years 2 months 1 day	4 months 2 days	2 months 23 days									3 years		2 years 2 months 1 day	3 years 2 months 1 day
Intrinsic values of stock options outstanding	17,300,000	5,800,000
Intrinsic values of stock options exercisable	7,800,000	1,800,000
Total fair value of shares vested	3,000,000	3,700,000	4,400,000
Unrecognized expense	$ 6,100,000	$ 5,200,000														$ 200,000	$ 100,000	$ 100,000											$ 200,000	$ 600,000
Weighted average fair value at grant date																$ 3.44