REVENUE - Revenue by Customer And Geography (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Revenue, Major Customer [Line Items]
Revenue	$ 14,048	$ 8,413
Gold and silver
Revenue, Major Customer [Line Items]
Revenue	7,860	5,215
Mineralized material
Revenue, Major Customer [Line Items]
Revenue	6,188	3,198
Customer 1 | Revenue from Contract with Customer Benchmark | Customer Concentration Risk
Revenue, Major Customer [Line Items]
Revenue	$ 6,500	800
Customer 1 | Accounts Receivable | Customer Concentration Risk
Revenue, Major Customer [Line Items]
Concentration risk percentage	96.00%		92.00%
Customer 2 | Revenue from Contract with Customer Benchmark | Customer Concentration Risk
Revenue, Major Customer [Line Items]
Revenue	$ 6,200	3,300
Customer 3 | Revenue from Contract with Customer Benchmark | Customer Concentration Risk
Revenue, Major Customer [Line Items]
Revenue	$ 1,300	$ 4,300