XML 73 R63.htm IDEA: XBRL DOCUMENT v3.23.3
COMMITMENTS AND CONTINGENCIES - Prepayment Agreement (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Other commitments          
Revenue $ 38,404,000 $ 25,988,000 $ 107,551,000 $ 82,177,000  
Remaining net proceeds recorded as deferred revenue 10,187,000   10,187,000   $ 6,155,000
Gold and silver sales          
Other commitments          
Revenue 38,404,000 25,988,000 107,551,000 82,177,000  
Prepayment Agreement | Auramet International LLC guarantee obligation          
Other commitments          
Remaining net proceeds recorded as deferred revenue $ 10,200,000   $ 10,200,000    
Number of ounces of gold pledged but not delivered 5,330   5,330    
Prepayment Agreement | Auramet International LLC guarantee obligation | Auramet Revolving Facility          
Other commitments          
Net proceeds from Auramet Facility $ 41,200,000 $ 20,500,000 $ 93,400,000 $ 20,500,000  
Prepayment Agreement | Auramet International LLC guarantee obligation | Gold and silver sales          
Other commitments          
Revenue     $ 83,200,000