Accrued Costs Expected to be Incurred in Liquidation (Detail) (USD $) In Thousands, unless otherwise specified	Apr. 27, 2013	Mar. 23, 2013
Accrued Expenses [Line Items]
Restructuring	$ 297	$ 3,309
Compensation	3,111	3,539
Professional fees	3,400	3,672
Other expenses associated with wind down activities	2,620	2,725
Insurance	1,500	1,500
Reserve for estimated costs during the liquidation period	$ 10,631	$ 14,745