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DISCONTINUED OPERATIONS - Schedule of Discontinued Operations of the MST Franchise (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]     (Loss) income from discontinued operations, net of income taxes  
Discontinued Operations, Disposed of by Sale | MST Franchise        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Cost of goods sold $ 0 $ 0 $ 0 $ 80
Research and development 0 0 0 0
Selling, general and administrative 15   46 25
Total operating expenses 15 117 46 25
(Loss) income from discontinued operations (513) (117) (544) 1
Gain on the sale of the MST Franchise 0 (87) 0 12,918
(Loss) income from discontinued operations, before income taxes (513) (204) (544) 12,919
Income tax expense 0 0 0 0
Net (loss) income from discontinued operations (513) (204) (544) 12,919
Discontinued Operations, Disposed of by Sale, Netting | MST Franchise        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Selling, general and administrative   117    
Product sales, net | Discontinued Operations, Disposed of by Sale | MST Franchise        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Total revenues $ (498) $ 0 $ (498) $ 106