Charges Related to Strategic Business Changes and Cost Reduction Plan (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Oct. 27, 2012	Jul. 28, 2012		Apr. 28, 2012		Jan. 28, 2012		Oct. 29, 2011		Jul. 30, 2011		Apr. 30, 2011		Jan. 29, 2011
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ (140)	$ (498)		$ (1,157)		$ (1,934)		$ (3,085)		$ (6,316)		$ (1,352)
Cost Reduction Plan recovery										174		365
Cost Reduction Plan charges/ Strategic Business Changes charges										(4,317)		(12,794)		(9,757)
Cash payments	133	318		476		702		1,134		1,891		3,233		1,078
Non-cash adjustments	7	40		183		75		17		5,483		4,232		7,327
Ending Balance		(140)		(498)		(1,157)		(1,934)		(3,085)		(6,316)		(1,352)
Store Related Closure Costs
Restructuring Cost and Reserve [Line Items]
Beginning Balance								(219)	[1]	(82)	[1]	(487)	[1]
Cost Reduction Plan recovery										174	[1]	365	[1]
Cost Reduction Plan charges/ Strategic Business Changes charges														(7,077)	[1]
Cash payments								197	[1]	144	[1]	699	[1]	93	[1]
Non-cash adjustments								22	[1]	(455)	[1]	(659)	[1]	6,497	[1]
Ending Balance										(219)	[1]	(82)	[1]	(487)	[1]
Non-Store Related Severance and Outplacement Costs
Restructuring Cost and Reserve [Line Items]
Beginning Balance	(140)	(481)		(974)		(1,656)		(2,077)		(1,559)		(865)
Cost Reduction Plan charges/ Strategic Business Changes charges										(1,330)		(1,583)		(1,850)
Cash payments	133	318		476		682		464		812		889		985
Non-cash adjustments	7	23		17				(43)
Ending Balance		(140)		(481)		(974)		(1,656)		(2,077)		(1,559)		(865)
Inventory and Asset-Related Costs
Restructuring Cost and Reserve [Line Items]
Beginning Balance		(17)	[2]	(85)	[2]	(180)	[2]	(198)	[2]	(4,714)	[2]
Cost Reduction Plan charges/ Strategic Business Changes charges										(532)	[2]	(9,605)	[2]	(830)	[2]
Cash payments						20	[2]			182	[2]
Non-cash adjustments		17	[2]	68	[2]	75	[2]	18	[2]	4,866	[2]	4,891	[2]	830	[2]
Ending Balance				(17)	[2]	(85)	[2]	(180)	[2]	(198)	[2]	(4,714)	[2]
Consulting Fees
Restructuring Cost and Reserve [Line Items]
Beginning Balance				(98)		(98)		(591)		39
Cost Reduction Plan charges/ Strategic Business Changes charges										(1,383)		(1,606)
Cash payments								473		753		1,645
Non-cash adjustments				98				20
Ending Balance						(98)		(98)		(591)		39
Stock Option Expense
Restructuring Cost and Reserve [Line Items]
Cost Reduction Plan charges/ Strategic Business Changes charges										(1,072)
Non-cash adjustments										$ 1,072

[1] Store related closure costs represent charges for the closure of approximately 50 underperforming stores. Such charges include the write down and accelerated depreciation of store assets, the write down of inventory, early lease terminations and store severance, partially offset by certain credits and allowances.

[2] Inventory and asset-related costs represent charges related to the write down and impairment of inventory and non-critical property and equipment.