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FINANCIAL INSTRUMENTS - Valuation Inputs and Relationships to Fair Value (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]    
Total assets $ 641,959 $ 656,349
Total liabilities $ 308,547 249,371
Level 3 of fair value hierarchy | Change of control probability | Minimum    
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]    
Increase in input 15.00%  
Level 3 of fair value hierarchy | Change of control probability | Maximum    
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]    
Increase in input 35.00%  
Level 3 of fair value hierarchy | At fair value | Change of control probability    
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]    
Increase in input 25.00%  
Orion | Level 3 of fair value hierarchy | Silver Purchase Agreement - silver price derivative    
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]    
Total assets   0
Orion | Level 3 of fair value hierarchy | Gold Prepay Agreement - gold price derivative    
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]    
Total assets   $ 0
Orion | Level 3 of fair value hierarchy | Commodity Price    
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]    
Decrease in input (10.00%)  
Increase in input 10.00%  
Orion | Level 3 of fair value hierarchy | Commodity Price | Silver Purchase Agreement - silver price derivative    
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]    
Total assets $ 1,898  
Increase (decrease) due to possible decrease in input 4,638  
Increase (decrease) due to possible increase in input (4,638)  
Orion | Level 3 of fair value hierarchy | Commodity Price | Gold Prepay Agreement - gold price derivative    
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]    
Total assets 2,916  
Increase (decrease) due to possible decrease in input 4,208  
Increase (decrease) due to possible increase in input (4,208)  
Orion | Level 3 of fair value hierarchy | Change of control probability | Conversion and change of control rights    
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]    
Increase (decrease) due to increase in unobservable input 327  
Orion | Level 3 of fair value hierarchy | At fair value | Change of control probability | Conversion and change of control rights    
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]    
Total liabilities (27,029)  
Sprott | Level 3 of fair value hierarchy | Change of control probability | Conversion and change of control rights    
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]    
Increase (decrease) due to possible increase in input (62)  
Increase (decrease) due to increase in unobservable input 62  
Sprott | Level 3 of fair value hierarchy | At fair value | Change of control probability | Conversion and change of control rights    
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]    
Total liabilities $ (5,299)