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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. 31, 2022 | Jan. 01, 2022
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Total equity-based compensation expense | $ 6,521 | $ 5,312
Time-based RSUs |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Total equity-based compensation expense | 3,587 | 2,896
Relative TSR PSUs |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Total equity-based compensation expense | 1,252 | 913
Growth PSUs |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Total equity-based compensation expense | 1,445 | 1,265
Common Stock |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Total equity-based compensation expense | 237 | 238
Cost of sales |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Total equity-based compensation expense | 308 | 226
Selling, general and administrative |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Total equity-based compensation expense | 4,867 | 3,956
Research and development |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |
Total equity-based compensation expense | $ 1,346 | $ 1,130

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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