REVENUE - Metal Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue
Revenue	$ 170,392	$ 162,355
Stream interests
Disaggregation of Revenue
Revenue	114,990	105,251
Stream interests \| Gold
Disaggregation of Revenue
Revenue	78,629	77,502
Stream interests \| Silver
Disaggregation of Revenue
Revenue	18,308	11,439
Stream interests \| Copper
Disaggregation of Revenue
Revenue	18,053	16,310
Royalty interests
Disaggregation of Revenue
Revenue	55,402	57,104
Royalty interests \| Gold
Disaggregation of Revenue
Revenue	42,868	37,917
Royalty interests \| Silver
Disaggregation of Revenue
Revenue	2,946	4,317
Royalty interests \| Copper
Disaggregation of Revenue
Revenue	5,058	6,705
Royalty interests \| Other
Disaggregation of Revenue
Revenue	$ 4,530	$ 8,165

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Name Accounting Standards Codification
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+ Details