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FAIR VALUE ACCOUNTING - Narrative (Details)
$ in Thousands
 3 Months Ended 5 Months Ended 6 Months Ended
Mar. 31, 2023
mi
Feb. 14, 2023
mi
Jan. 24, 2023
shares
Jun. 30, 2023
USD ($)
Mar. 31, 2023
Jun. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
Jun. 30, 2023
USD ($)
Jun. 30, 2022
USD ($)
Dec. 31, 2022
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Change In Value Of Investments Accounted At Fair Value       $ 770   $ (13,419)   $ (2,189) $ (16,837)  
Convertible Note, decrease in fair value             $ 790      
Measurement Input, Price Volatility                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Notes Receivable, Fair Value Measurement Input | mi 0.60 0.60                
Measurement Input, Yield                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Notes Receivable, Fair Value Measurement Input | mi 0.100 0.095                
Virginia Energy Resources Inc. | CUR                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Business Acquisition, Percentage of Voting Interests Acquired     100.00%              
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Entity Shares Issued Per Acquiree Share | shares     0.26              
Business Combination, Number of Common Stock Shares Acquired | shares     9,439,857              
Business Combination, Acquired Shares Converted To Common Stock | shares     2,454,362              
Virginia Energy Resources Inc. | Energy Fuels                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Business Combination, Shares Converted Into Common Stock | shares     16,189,548              
CUR | Energy Fuels                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Business Acquisition, Percentage of Voting Interests Acquired     16.70%              
Virginia Energy Resources Inc.                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Percentage Of Fair Value Investment         13.50%          
Virginia Energy Resources Inc. | Level 1                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Investments accounted for at fair value                   $ 2,830
Consolidated Uranium Inc.                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Percentage Of Fair Value Investment         17.40%     16.30%    
Investments accounted for at fair value       $ 17,370     $ 17,370 $ 17,370    
Consolidated Uranium Inc. | Level 1                    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                    
Investments accounted for at fair value                   $ 16,500