Related Party Transactions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Ausenco Engineering USA South | Acid POX milling technical study
Related Party Transaction [Line Items]
Related party transaction, amount	$ 0.4	$ 0.3
AMC | Director Compensation
Related Party Transaction [Line Items]
Related party transaction, amount	0.2	0.2
AMC | Director Compensation, Restricted Stock Fair Value
Related Party Transaction [Line Items]
Related party transaction, amount	$ 0.1	$ 0.1
Shares of common stock (in shares)	12,393	18,007