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COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS (Reserve for product warranty activity) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jul. 02, 2016
Jun. 27, 2015
Jul. 02, 2016
Jun. 27, 2015
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]        
Reserve for product warranty, beginning of period $ 1,871 $ 1,849 $ 1,856 $ 1,542
Addition from business combination 0 0 0 547
Provision for product warranty 2,882 828 4,240 2,065
Product warranty costs paid (649) (705) (1,992) (2,182)
Reserve for product warranty, end of period $ 4,104 $ 1,972 $ 4,104 $ 1,972