Restructuring Activities and Accrued Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jul. 01, 2012
Scottsdale Facility
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 7,683
Cash expenditures	(1,361)
Ending Balance	6,322
Scottsdale Facility | Employee Severance
Restructuring Cost and Reserve [Line Items]
Beginning Balance	355
Cash expenditures	(238)
Ending Balance	117
Scottsdale Facility | Other Associated Costs
Restructuring Cost and Reserve [Line Items]
Beginning Balance	7,328
Cash expenditures	(1,123)
Ending Balance	6,205
Other Facilities
Restructuring Cost and Reserve [Line Items]
Beginning Balance	2,724
Assumed from acquisition	9,797
Provisions	10,745
Reversal of prior provision	(1,662)
Cash expenditures	(17,991)
Other non-cash settlement	(123)
Ending Balance	3,490
Other Facilities | Employee Severance
Restructuring Cost and Reserve [Line Items]
Beginning Balance	2,382
Assumed from acquisition	8,215
Provisions	8,666
Reversal of prior provision	(402)
Cash expenditures	(16,003)
Other non-cash settlement	(25)
Ending Balance	2,833
Other Facilities | Other Associated Costs
Restructuring Cost and Reserve [Line Items]
Provisions	1,518
Cash expenditures	(1,518)
Other Facilities | Contract Termination Costs
Restructuring Cost and Reserve [Line Items]
Beginning Balance	342
Assumed from acquisition	1,582
Provisions	561
Reversal of prior provision	(1,260)
Cash expenditures	(470)
Other non-cash settlement	(98)
Ending Balance	$ 657