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Long-term Debt - Gold Notes Narrative (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
USD ($)
oz
$ / Ounce
$ / Unit
Dec. 31, 2023
USD ($)
oz
Dec. 31, 2022
USD ($)
Disclosure of detailed information about borrowings [line items]      
Amount of Gold held in trust (in ounces) | oz 880 880  
Gold in trust $ 1,704 $ 1,704 $ 907
Gold Notes      
Disclosure of detailed information about borrowings [line items]      
Principal value $ 43,800    
Gold notes, price per unit | $ / Unit 1.00    
Borrowings, term 7 years    
Borrowings, interest rate 7.50%    
Covenant required floor price (USD per ounce) | $ / Ounce 1,400