REVENUE AND CONTRACT LIABILITIES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Mar. 28, 2020	Mar. 30, 2019
Change in Contract with Customer, Liability [Roll Forward]
Contract liabilities, beginning of period	$ 2,588	$ 548	$ 1,896	$ 997
Revenue recognized	2,459	2,339	5,817	5,517
Additions	10,229	2,372	14,279	5,101
Contract liabilities, end of period	$ 10,358	$ 581	$ 10,358	$ 581