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SEGMENT INFORMATION (Capital expenditures and depreciation expense by segment) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Oct. 03, 2015
Sep. 27, 2014
Sep. 28, 2013
Capital expenditures:      
Property, Plant and Equipment, Additions $ 9,519 $ 12,401 $ 17,172
Depreciation expense:      
Depreciation expense 9,089 8,202 9,311
Equipment [Member]      
Capital expenditures:      
Property, Plant and Equipment, Additions 7,288 9,560 11,704
Depreciation expense:      
Depreciation expense 6,685 5,662 6,936
Expendable Tools [Member]      
Capital expenditures:      
Property, Plant and Equipment, Additions 2,231 2,841 5,468
Depreciation expense:      
Depreciation expense $ 2,404 $ 2,540 $ 2,375