SEGMENT INFORMATION (Capital expenditures and depreciation expense by segment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Capital expenditures:
Property, Plant and Equipment, Additions	$ 6,301	$ 9,519	$ 12,401
Depreciation expense:
Depreciation expense	9,569	9,089	8,202
Equipment [Member]
Capital expenditures:
Property, Plant and Equipment, Additions	4,400	7,288	9,560
Depreciation expense:
Depreciation expense	7,336	6,685	5,662
Expendable Tools [Member]
Capital expenditures:
Property, Plant and Equipment, Additions	1,901	2,231	2,841
Depreciation expense:
Depreciation expense	$ 2,233	$ 2,404	$ 2,540