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SHAREHOLDERS' EQUITY - Flow-Through Shares Issuance (Details) - USD ($) $ / shares in Units, $ in Thousands			9 Months Ended		12 Months Ended
	Mar. 10, 2025	Jun. 14, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award
Shares issued		1,533,000
Gross proceeds		$ 21,800
Issuance costs		1,500
Net proceeds		20,400		$ 14,374
Net proceeds allocated to the sale of tax benefits		6,000
Proceeds from issuance of common stock		$ 14,400
Canadian Exploration Expenditures
Share-based Compensation Arrangement by Share-based Payment Award
Shares issued		643,000
Share price		$ 15.45
Exploration expenditures			$ 7,800		$ 500
Canadian Development Expenses
Share-based Compensation Arrangement by Share-based Payment Award
Shares issued		890,000
Share price		$ 13.4
Exploration expenditures			$ 11,200		$ 800
Goliath Resources Limited | Private placement
Share-based Compensation Arrangement by Share-based Payment Award
Shares issued for acquisition of mineral property interests (in shares)	868,056
Number of units company acquired	5,181,347
Number of common shares	1
Share purchase warrant	0.5

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