Impairment of Long-Lived Assets - Long Lived Assets Tested for Impairment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 27, 2012	Oct. 29, 2011	Oct. 27, 2012	Oct. 29, 2011
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment charges from continuing operations	$ 533	$ 4,457	$ 3,164	$ 9,575
Impairment charges from discontinued operations		2,588		3,254
Total impairment charges	$ 533	$ 7,045	$ 3,164	$ 12,829