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CASH, CASH EQUIVALENTS, AND MARKETABLE SECURITIES - Narrative (Details) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Mar. 29, 2024 | Mar. 31, 2023 | Mar. 29, 2024 | Mar. 31, 2023 | Sep. 29, 2023
Investments, Debt and Equity Securities [Abstract] |  |  |  |  |
Available-for-sale |  |  |  | $ 0 |
Proceeds from sale of debt securities |  |  | $ 0 | 0 |
Payments to acquire debt securities |  |  | 0 | 0 |
Unrealized (loss) gain on available-for-sale securities, net of tax | $ 0 | $ 0 |  |  |
Short term investments | 23,914,000 | 0 | 23,914,000 | 0 | $ 26,764,000
Investments | $ 2,157,000 | $ 0 | $ 2,157,000 | $ 0 | $ 13,943,000

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