XML 108 R96.htm IDEA: XBRL DOCUMENT v3.8.0.1
COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS (Reserve for product warranty activity) (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2017
Oct. 01, 2016
Oct. 03, 2015
Commitments and Contingencies Disclosure [Abstract]      
Standard Product Warranty Accrual, Additions from Business Acquisition $ 0 $ 0 $ 547
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]      
Reserve for warranty, beginning of period 12,544 10,632 11,659
Provision for warranty 11,743 11,553 9,759
Utilization of reserve (10,491) (9,641) (11,333)
Reserve for warranty, end of period $ 13,796 $ 12,544 $ 10,632