Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 97,255	$ 87,231
Accumulated depreciation and amortization	(63,789)	(58,298)
Property, plant and equipment, net	33,466	28,933
Depreciation	6,100	6,900	$ 8,000
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,187	1,153
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	14,596	14,246
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	60,839	55,400
Office furniture, equipment and other
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	1,389	1,373
Computer equipment and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	14,591	14,232
Construction in process
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 4,653	$ 827