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SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Total equity-based compensation expense) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Sep. 28, 2024 | Sep. 30, 2023 | Oct. 01, 2022
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |
Total equity-based compensation expense (reversal) | $ 26,891 | $ 22,744 | $ 18,986
Relative TSR PSUs |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |
Total equity-based compensation expense (reversal) | 5,856 | 4,949 | 4,255
Time-based RSUs |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |
Total equity-based compensation expense (reversal) | 17,683 | 14,304 | 11,655
Growth PSUs |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |
Total equity-based compensation expense (reversal) | 2,093 | 2,491 | 2,127
Common Stock |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |
Total equity-based compensation expense (reversal) | 1,259 | 1,000 | 949
Cost of sales |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |
Total equity-based compensation expense (reversal) | 1,277 | 1,192 | 960
Selling, general and administrative |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |
Total equity-based compensation expense (reversal) | 18,524 | 16,239 | 13,911
Research and development |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |
Total equity-based compensation expense (reversal) | $ 7,090 | $ 5,313 | $ 4,115

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