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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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The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

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Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount of cash outflow to acquire investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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