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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Total equity-based compensation expense) (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Jul. 02, 2016
Sep. 30, 2017
Oct. 01, 2016
Oct. 03, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Total equity-based compensation expense (reversal)   $ 11,722 $ 5,730 [1] $ 11,989
Market-based restricted stock [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Total equity-based compensation expense (reversal)   3,480 (33) 4,677
Time-based restricted stock [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Total equity-based compensation expense (reversal)   7,492 5,255 6,129
Performance-based restricted stock        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Total equity-based compensation expense (reversal)   0 (43) 131
Stock options [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Total equity-based compensation expense (reversal)   0 0 3
Common stock [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Total equity-based compensation expense (reversal)   750 551 1,049
Cost of sales [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Total equity-based compensation expense (reversal)   463 421 393
Selling, general and administrative (1) [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Total equity-based compensation expense (reversal)   9,015 3,244 [2] 9,127
Selling, general and administrative (1) [Member] | Forfeiture of Stock Awards [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Total equity-based compensation expense (reversal) $ (2,000)      
Research and development [Member]        
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]        
Total equity-based compensation expense (reversal)   $ 2,244 $ 2,065 $ 2,469
[1] The equity-based compensation expense for fiscal 2016, includes the reversal of a $2.0 million expense due to the forfeiture of stock awards in connection with the October 2015 retirement of the Company's CEO.
[2] The selling, general and administrative expense for fiscal 2016, includes the reversal of a $2.0 million expense due to the forfeiture of stock awards in connection with the October 2015 retirement of the Company's CEO.