INCOME TAXES - Tax Provision/Benefit (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jul. 02, 2021	Jun. 26, 2020	Jul. 02, 2021	Jun. 26, 2020
INCOME TAXES
Provision for income taxes	$ 265	$ 550	$ 121	$ 1,253

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Name:	us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration