DISCONTINUED OPERATIONS - Schedule of Non-Cash Items Related to Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Cash Flows From Operating Activities:
Stock-based compensation (income) expense*	$ 856	$ 893
Gain on the sale of the MST Franchise	0	(13,005)
Supplemental disclosure of cash flow information:
Amount due from sale of MST Franchise	$ 0	5,000
Discontinued Operations, Disposed of by Sale \| MST Franchise
Cash Flows From Operating Activities:
Stock-based compensation (income) expense*		(352)
Gain on the sale of the MST Franchise		(13,005)
Total non-cash items of discontinued operations		$ (13,357)

Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1B
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=109239629&loc=SL4582445-111684

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration