SEGMENT INFORMATION (Capital expenditures and depreciation expense by segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 28, 2015	Mar. 29, 2014	Mar. 28, 2015	Mar. 29, 2014
Capital expenditures:
Property, Plant and Equipment, Additions	$ 1,191	$ 3,145	$ 3,444	$ 8,574
Depreciation expense:
Depreciation expense	2,261	2,164	4,488	3,827
Equipment [Member]
Capital expenditures:
Property, Plant and Equipment, Additions	776	2,359	2,512	6,591
Depreciation expense:
Depreciation expense	1,662	1,514	3,247	2,612
Expendable Tools [Member]
Capital expenditures:
Property, Plant and Equipment, Additions	415	786	932	1,983
Depreciation expense:
Depreciation expense	$ 599	$ 650	$ 1,241	$ 1,215