Components of Net Pension Expense for Pension Plan (Detail) (Pension Plans, Defined Benefit, USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 29, 2011	Oct. 30, 2010	Oct. 29, 2011	Oct. 30, 2010
Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Interest expense on projected benefit obligation	$ 2,513	$ 2,371	$ 7,454	$ 7,049
Expected return on plan assets	(2,435)	(2,394)	(7,319)	(7,194)
Net amortization and deferral	206	139	623	383
Net expense (credit)	$ 284	$ 116	$ 758	$ 238