Provisions (Tables)

12 Months Ended

Dec. 31, 2025

Disclosure of provision [Abstract]

Disclosure of reconciliation of provision for closure and reclamation [Table Text Block]

		Maracás Menchen Mine			Currais Novos Tungsten			Total
Balance at December 31, 2023	$	5,712		$	571		$	6,283
Changes in estimated cash flows and discount rates		(3,891	)		(38	)		(3,929	)
Accretion		284			30			314
Effect of foreign exchange		(967	)		(124	)		(1,091	)
Balance at December 31, 2024	$	1,138		$	439		$	1,577
Changes in estimated cash flows and discount rates		226			(12	)		214
Accretion		94			36			130
Effect of foreign exchange		77			34			111
Balance at December 31, 2025	$	1,535		$	497		$	2,032