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SEGMENT INFORMATION (Assets by segment) (Details) - USD ($)
$ in Thousands
Oct. 03, 2015
Sep. 27, 2014
Sep. 28, 2013
Segment assets:      
Total assets $ 904,466 $ 944,448 $ 862,994
Equipment [Member]      
Segment assets:      
Total assets 828,471 839,847 764,793
Expendable Tools [Member]      
Segment assets:      
Total assets $ 75,995 $ 104,601 $ 98,201