EQUITY INVESTMENTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 28, 2019		Sep. 29, 2018		Sep. 30, 2017	Jan. 30, 2019
Schedule of Equity Method Investments [Line Items]
Equity Securities without Readily Determinable Fair Value, Amount	$ 5,000	[1]	$ 0	[1]		$ 5,000
Income (Loss) from Equity Method Investments	(124)		(129)		$ 190
Equity investments	6,250		1,373
Equity investments	$ 1,250		$ 1,373

[1] On January 30, 2019, the Company made a $5.0 million investment in one of our collaborative partners, over which the Company does not have significant influence. During the fiscal year ended September 28, 2019, there was no impairment or adjustment to the observable price.