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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Cash, Cash Equivalents and Marketable Securities) (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 29, 2023
Sep. 30, 2022
Oct. 01, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Cash and cash equivalents $ 111,854 $ 129,803  
Maturities of the marketable securities 0 0 $ 0
Unrealized gain (loss) on available-for-sale securities, net of tax 0 0 $ 0
Short-term investments 26,764 0  
Long-term investments 13,943 $ 0  
Non-US      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Cash and cash equivalents $ 49,838