Fair Value Measurments - Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) (Fair Value, Measurements, Recurring, USD $) In Thousands, unless otherwise specified	Oct. 27, 2012		Jan. 28, 2012		Oct. 29, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	$ 6,463		$ 4,149		$ 3,796
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	2,578		1,309		1,123
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	3,885		2,840		2,673
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	0		0		0
Non-qualified deferred compensation plan assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	6,463	[1]	4,149	[1]	3,796	[1]
Non-qualified deferred compensation plan assets | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	2,578	[1]	1,309	[1]	1,123	[1]
Non-qualified deferred compensation plan assets | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	3,885	[1]	2,840	[1]	2,673	[1]
Non-qualified deferred compensation plan assets | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	$ 0	[1]	$ 0	[1]	$ 0	[1]

[1] The Company maintains a self-directed, non-qualified deferred compensation plan structured as a rabbi trust for certain executives at the vice-president level and above. Certain of the investment assets of the rabbi trust are valued based on quoted market prices, which are considered Level 1 inputs, with the remainder valued based on quoted prices for identical securities in markets that are not active, which are considered Level 2 inputs.