Business Segment Information (Geographical Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 650,147	$ 563,934	$ 564,328
Property and Equipment, Net	100,789	80,454	81,575
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	154,707	151,288	144,239
Property and Equipment, Net	79,794	59,312	58,911
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	163,944	149,308	179,043
Property and Equipment, Net	13,695	13,071	13,573
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	152,264	131,727	117,952
Property and Equipment, Net	5,630	6,260	7,034
Asia, Excluding China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	148,056	109,376	90,242
Property and Equipment, Net	1,670	1,811	2,057
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 31,176	$ 22,235	$ 32,852