DISCONTINUED OPERATIONS - Non-Cash Items Related to Discontinued Operations (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Discontinued Operation, Alternative Cash Flow Information [Abstract]
Stock-based compensation (income) expense*	$ 3,305,000	$ 4,297,000
Gain on the sale of the MST Franchise	0	(12,918,000)
Supplemental disclosure of cash flow information:
Amount due from sale of MST Franchise	0	5,000,000
Discontinued Operations, Disposed of by Sale | MST Franchise
Discontinued Operation, Alternative Cash Flow Information [Abstract]
Stock-based compensation (income) expense*		(352,000)
Gain on the sale of the MST Franchise		(12,918,000)
Total non-cash items of discontinued operations	$ 0	(13,270,000)
Supplemental disclosure of cash flow information:
Amount due from sale of MST Franchise		$ 5,000,000