v3.26.1
Commitments and Contingencies - Contract Liability (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Business Combination [Line Items]    
Revenue Recognized $ 160 $ 42,316
Franco-Nevada    
Business Combination [Line Items]    
Opening Balance 5,722 6,382
Revenue Recognized (160) (152)
Closing Balance 5,562 6,230
Kensington    
Business Combination [Line Items]    
Opening Balance 0 42,164
Additions 0 0
Revenue Recognized 0 (42,164)
Closing Balance $ 0 $ 0