REVENUE - Metal Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue
Revenue	$ 174,431	$ 146,880
Stream interests
Disaggregation of Revenue
Revenue	115,921	106,503
Stream interests \| Gold
Disaggregation of Revenue
Revenue	83,318	83,597
Stream interests \| Silver
Disaggregation of Revenue
Revenue	13,877	10,898
Stream interests \| Copper
Disaggregation of Revenue
Revenue	18,726	12,008
Royalty interests
Disaggregation of Revenue
Revenue	58,510	40,377
Royalty interests \| Gold
Disaggregation of Revenue
Revenue	43,417	26,904
Royalty interests \| Silver
Disaggregation of Revenue
Revenue	3,952	3,441
Royalty interests \| Copper
Disaggregation of Revenue
Revenue	4,967	4,060
Royalty interests \| Other
Disaggregation of Revenue
Revenue	$ 6,174	$ 5,972

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
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+ Details