Restructuring - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended	9 Months Ended
	Jun. 23, 2012	Mar. 24, 2012	Mar. 24, 2012	Jun. 23, 2012
Restructuring Cost and Reserve [Line Items]
Divestiture charges	$ 1,700,000	$ 18,300,000
Restructuring charges - cost of product sales	1,500,000
Severance charges	(69,000)	207,000	200,000	138,000
Other contractual charges			200,000
Impairment charges related to inventory and equipment	1,100,000
Charges related to purchase orders and other contractual obligations	400,000
Restructuring charges for contractual obligations	200,000
Charges related to termination of lease		400,000
Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges - cost of product sales			17,900,000
Lease termination charge			400,000
Impairment charges related to inventory			9,200,000
Impairment charges related to manufacturing equipment			6,100,000
Impairment charges related to outstanding purchase orders of raw materials			$ 2,600,000