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EQUITY AND LONG-TERM INVESTMENTS AND FAIR VALUE MEASUREMENTS - Equity Investment in InCarda (Details)
3 Months Ended 12 Months Ended
Jun. 15, 2022
USD ($)
$ / shares
shares
Mar. 09, 2022
USD ($)
Sep. 30, 2020
USD ($)
shares
Dec. 31, 2022
USD ($)
Director
$ / shares
Dec. 31, 2021
USD ($)
Mar. 30, 2022
InCarda            
Equity Investment            
Number of Investee's Board members currently representing the Company | Director       1    
Number of the Investee's Board members | Director       8    
Equity investment ownership percentage       9.00% 13.00%  
Unrealized loss from fair value changes in equity investments       $ 8,700,000 $ 700,000  
InCarda Convertible Note            
Equity Investment            
Debt Instrument, annual interest rate           6.00%
Debt instrument principal amount percentage       100.00%    
InCarda Convertible Note | Qualified Financing            
Equity Investment            
Gross Proceeds from sale of equity   $ 10,000,000.0        
Series C preferred stock and warrants | InCarda            
Equity Investment            
Amount of securities purchase agreement     $ 15,800,000      
Incarda 2020 Warrants [Member] | InCarda            
Equity Investment            
Maximum number of additional shares into which warrants may be converted under the securities purchase agreement | shares     5,117,358      
Equity and long-term investments at fair value         400,000  
Exercise price of warrants | $ / shares       $ 0.7328    
Extended expiration date       Mar. 31, 2023    
Convertible note and warrants | InCarda            
Equity Investment            
Amount of securities purchase agreement   $ 700,000        
Common stock | InCarda            
Equity Investment            
Debt Conversion, Converted Instrument, Shares Issued | shares 4,093,886          
Series A1 preferred stock | InCarda            
Equity Investment            
Debt Conversion, Converted Instrument, Shares Issued | shares 37,350          
Series D 1 Preferred Stock | InCarda            
Equity Investment            
Debt Conversion, Converted Instrument, Shares Issued | shares 8,771,780          
Series D 2 Preferred Stock | InCarda            
Equity Investment            
Debt Conversion, Converted Instrument, Shares Issued | shares 3,369,802          
Series D1 Warrant | InCarda            
Equity Investment            
Debt Conversion, Converted Instrument, Shares Issued | shares 2,490,033          
Exercise price of warrants | $ / shares $ 0.20          
Series C preferred stock | InCarda            
Equity Investment            
Number of shares to be purchased under the securities purchase agreement | shares     20,469,432      
Debt Conversion, Converted Instrument, Shares Issued | shares 5,117,358          
Transaction cost     $ 800,000      
Equity and long-term investments at fair value       $ 6,800,000 15,800,000  
Impairment of equity investments       9,000,000.0 $ 0  
Exercise price of warrants | $ / shares $ 0.73          
Series C Warrants and Series D Warrants | InCarda            
Equity Investment            
Equity and long-term investments at fair value       600,000    
Series D Preferred Stock | InCarda            
Equity Investment            
Payments to acquire equity securities $ 2,300,000          
Series D 1 And D 2 Preferred Stock And Common Stock | InCarda            
Equity Investment            
Equity and long-term investments at fair value       $ 3,200,000    
Significant Unobservable Inputs, Level 3 | Backsolve Valuation | InCarda            
Equity Investment            
Expected Holding Period       2 years    
Risk Free Interest Rate       3.20%    
Dividend Yield       0.00%    
Estimated volatility       122.00%