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SEGMENT INFORMATION (Capital expenditures and depreciation expense by segment) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Dec. 28, 2013
Dec. 29, 2012
Capital expenditures:    
Capital expenditures $ 5,429 $ 1,616
Depreciation expense:    
Depreciation expense 1,663 2,507
Equipment [Member]
    
Capital expenditures:    
Capital expenditures 4,232 779
Depreciation expense:    
Depreciation expense 1,098 1,896
Expendable Tools [Member]
    
Capital expenditures:    
Capital expenditures 1,197 837
Depreciation expense:    
Depreciation expense $ 565 $ 611