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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Total equity-based compensation expense) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 30, 2023
Dec. 31, 2022
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total equity-based compensation expense $ 7,857 $ 6,521
Time-based RSUs    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total equity-based compensation expense 4,543 3,587
Relative TSR PSUs    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total equity-based compensation expense 1,560 1,252
Growth PSUs    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total equity-based compensation expense 1,439 1,445
Common Stock    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total equity-based compensation expense 315 237
Cost of sales    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total equity-based compensation expense 359 308
Selling, general and administrative    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total equity-based compensation expense 5,680 4,867
Research and development    
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]    
Total equity-based compensation expense $ 1,818 $ 1,346