Goodwill and Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 02, 2016	Dec. 27, 2014	Oct. 03, 2015
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets, Gross Carrying Amount	$ 86,958		$ 88,238
Accumulated Amortization	(66,888)		(65,462)
Intangible Assets, Net	20,070		22,776
Amortization expense for intangible assets	2,092	$ 2,180
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
2016 (remainder)	5,892
2017	6,902
2018	4,247
2019	2,190
2020	684
2021	52
Thereafter	103
Intangible Assets, Net	20,070		22,776
Existing technology [Member]
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets, Gross Carrying Amount	70,402		71,365
Accumulated Amortization	(56,517)		(55,452)
Intangible Assets, Net	13,885		15,913
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Intangible Assets, Net	13,885		15,913
Customer Lists [Member]
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets, Gross Carrying Amount	15,803		16,099
Accumulated Amortization	(10,027)		(9,661)
Intangible Assets, Net	5,776		6,438
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Intangible Assets, Net	5,776		6,438
Trade Names [Member]
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets, Gross Carrying Amount	390		399
Accumulated Amortization	(344)		(349)
Intangible Assets, Net	46		50
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Intangible Assets, Net	46		50
In-process research and development
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets, Gross Carrying Amount	363		375
Accumulated Amortization	0		0
Intangible Assets, Net	363		375
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Intangible Assets, Net	363		$ 375
Existing Technology and Production Know-how [Member]
Finite-Lived Intangible Assets, Net [Abstract]
Amortization expense for intangible assets	1,600	1,700
Foreign Exchange [Member]
Finite-Lived Intangible Assets, Net [Abstract]
Amortization expense for intangible assets	$ 700	$ 900