SEGMENT INFORMATION (Assets by segment) (Details) - USD ($) $ in Thousands	Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Segment assets:
Total assets	$ 982,444	$ 904,466	$ 944,448
Equipment [Member]
Segment assets:
Total assets	901,316	828,471	839,847
Expendable Tools [Member]
Segment assets:
Total assets	$ 81,128	$ 75,995	$ 104,601