Net Sales by Originating Geographic Area and Estimated End Market (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 01, 2012	Apr. 03, 2011	Apr. 01, 2012	Apr. 03, 2011
Segment Reporting Disclosure [Line Items]
Net Sales	$ 249,306	$ 207,490	$ 490,226	$ 391,841
United States
Segment Reporting Disclosure [Line Items]
Net Sales	123,488	133,844	240,481	246,303
Europe
Segment Reporting Disclosure [Line Items]
Net Sales	65,656	32,416	135,079	63,105
Asia
Segment Reporting Disclosure [Line Items]
Net Sales	60,162	41,230	114,666	82,433
Defense And Security
Segment Reporting Disclosure [Line Items]
Net Sales	71,466	73,036	140,581	142,879
Aerospace
Segment Reporting Disclosure [Line Items]
Net Sales	52,879	53,533	102,002	98,604
Communications
Segment Reporting Disclosure [Line Items]
Net Sales	77,231	36,518	152,355	70,154
Industrial and Medical
Segment Reporting Disclosure [Line Items]
Net Sales	$ 47,730	$ 44,403	$ 95,288	$ 80,204