Business Segment Information (Geographical Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Sep. 28, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 563,934	$ 564,328	$ 569,439
Property and Equipment, Net	80,454	81,575	78,399
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	151,288	144,239	137,750
Property and Equipment, Net	59,312	58,911	55,509
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	149,308	179,043	178,610
Property and Equipment, Net	13,071	13,573	13,838
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	131,727	117,952	127,368
Property and Equipment, Net	6,260	7,034	7,661
Asia, Excluding China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	107,887	90,242	96,653
Property and Equipment, Net	1,811	2,057	1,391
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 23,724	$ 32,852	$ 29,058