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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

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