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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Total equity-based compensation expense) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Dec. 28, 2024 | Dec. 30, 2023
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Total equity-based compensation expense | $ 6,141 | $ 7,857
Time-based RSUs |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Total equity-based compensation expense | 5,156 | 4,543
Relative TSR PSUs |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Total equity-based compensation expense | 1,778 | 1,560
Growth PSUs |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Total equity-based compensation expense | (1,108) | 1,439
Common Stock |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Total equity-based compensation expense | 315 | 315
Cost of sales |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Total equity-based compensation expense | 383 | 359
Selling, general and administrative |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Total equity-based compensation expense | 3,739 | 5,680
Research and development |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Total equity-based compensation expense | $ 2,019 | $ 1,818

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