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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Total equity-based compensation expense) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Jun. 28, 2025 | Jun. 29, 2024 | Jun. 28, 2025 | Jun. 29, 2024
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Total equity-based compensation expense | $ 7,092 | $ 6,363 | $ 20,726 | $ 20,452
Time-based RSUs |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Total equity-based compensation expense | 5,003 | 4,327 | 15,369 | 13,340
Relative TSR PSUs |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Total equity-based compensation expense | 1,705 | 1,484 | 5,320 | 4,317
Growth PSUs |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Total equity-based compensation expense | 113 | 237 | (863) | 1,850
Common stock |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Total equity-based compensation expense | 271 | 315 | 900 | 945
Cost of sales |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Total equity-based compensation expense | 376 | 315 | 1,146 | 1,037
Selling, general and administrative |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Total equity-based compensation expense | 4,527 | 4,300 | 13,186 | 14,083
Research and development |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Total equity-based compensation expense | $ 2,189 | $ 1,748 | $ 6,394 | $ 5,332

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