REVENUE - Metal Disaggregation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue
Revenue	$ 1,030,471	$ 719,395	$ 605,717
Stream interest
Disaggregation of Revenue
Revenue	686,472	483,294	418,280
Stream interest | Gold
Disaggregation of Revenue
Revenue	547,867	367,492	307,797
Stream interest | Silver
Disaggregation of Revenue
Revenue	92,383	66,812	64,851
Stream interest | Copper
Disaggregation of Revenue
Revenue	44,254	48,990	45,632
Stream interest | Other
Disaggregation of Revenue
Revenue	1,968	0	0
Royalty interest
Disaggregation of Revenue
Revenue	343,999	236,101	187,437
Royalty interest | Gold
Disaggregation of Revenue
Revenue	252,018	176,888	154,327
Royalty interest | Silver
Disaggregation of Revenue
Revenue	28,455	18,702	8,554
Royalty interest | Copper
Disaggregation of Revenue
Revenue	32,537	17,776	11,792
Royalty interest | Other
Disaggregation of Revenue
Revenue	$ 30,989	$ 22,735	$ 12,764