Goodwill and Intangible Assets (Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jun. 29, 2013		Jun. 30, 2012	Sep. 29, 2012
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets, Gross Carrying Amount	$ 104,118			$ 63,844
Intangible Assets, Accumulated Amortization	(60,010)			(54,371)
Intangible Assets, Net	44,108			9,473
Amortization expense for intangible assets	7,313		4,970
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
2013 (remainder)	2,439
2014	9,536
2015	9,029
2016	8,629
2017	7,664
2018	4,427
Thereafter	2,384
Intangible Assets, Net	44,108			9,473
Existing technology
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets, Gross Carrying Amount	80,702			51,346
Intangible Assets, Accumulated Amortization	(49,155)			(44,457)
Intangible Assets, Net	31,547			6,889
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Intangible Assets, Net	31,547			6,889
Customer lists
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets, Gross Carrying Amount	17,135			7,849
Intangible Assets, Accumulated Amortization	(6,947)			(5,666)
Intangible Assets, Net	10,188			2,183
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Intangible Assets, Net	10,188			2,183
Trade name
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets, Gross Carrying Amount	3,375			3,050
Intangible Assets, Accumulated Amortization	(3,234)			(2,749)
Intangible Assets, Net	141			301
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Intangible Assets, Net	141			301
Non-compete agreements
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets, Gross Carrying Amount	690			689
Intangible Assets, Accumulated Amortization	(674)			(661)
Intangible Assets, Net	16			28
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Intangible Assets, Net	16			28
Production know-how
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets, Gross Carrying Amount	0	[1]		910	[1]
Intangible Assets, Accumulated Amortization	0	[1]		(838)	[1]
Intangible Assets, Net	0	[1]		72	[1]
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Intangible Assets, Net	0	[1]		72	[1]
In-process research and development
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets, Gross Carrying Amount	2,216			0
Intangible Assets, Accumulated Amortization	0			0
Intangible Assets, Net	2,216			0
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Intangible Assets, Net	2,216			0
Existing Technology and Production Know-how
Finite-Lived Intangible Assets, Net [Abstract]
Amortization expense for intangible assets	$ 4,700		$ 3,700

[1] For accounting purposes, when an intangible asset is fully amortized, it is removed from the disclosure schedule. Amortization expense for intangible assets for the nine months ended June 29, 2013 and June 30, 2012 was $7.3 million and $5.0 million, respectively, which includes $4.7 million and $3.7 million, respectively, for amortization of existing technology and production know-how.