Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2023	Dec. 31, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net income and comprehensive income	$ 138,828	$ 240,132	$ 239,942	$ 302,776
Adjustments to reconcile net income and comprehensive income to net cash provided by operating activities:
Depreciation, depletion and amortization	99,685	164,937	178,935	183,569
Gain on sale of Peak Gold JV interest				(33,906)
Non-cash employee stock compensation expense	3,218	9,696	8,411	5,730
Fair value changes in equity securities	1,350	147	1,503	(6,017)
Deferred tax (benefit) expense	2,510	(6,469)	(19,836)	456
Impairment of royalty interests		0	4,287
Other	1,090	779	979	971
Changes in assets and liabilities:
Royalty receivables	(6,846)	521	4,683	(19,552)
Stream inventory	6,077	2,868	(1,049)	(6,014)
Income tax receivable	(396)	390	1,849	(2,085)
Prepaid expenses and other assets	(1,374)	(4,369)	(3,908)	318
Accounts payable	76	4,756	211	3,237
Income tax payable	4,591	(508)	(3,005)	1,156
Uncertain tax positions	(910)			(24,518)
Other liabilities	884	2,912	4,343	1,030
Net cash provided by operating activities	248,783	415,792	417,345	407,151
Cash flows from investing activities:
Acquisition of stream and royalty interests	(281,066)	(2,678)	(922,155)	(168,147)
Khoemacau subordinated debt facility	(7,000)			(18,000)
Proceeds from sale of Peak Gold JV interest				49,154
Proceeds from sale of Contango shares				12,146
Proceeds from sale of equity securities				8,651
Other	(64)	(151)	(721)	(541)
Net cash used in investing activities	(288,130)	(2,829)	(922,876)	(116,737)
Cash flows from financing activities:
Repayment of debt	(100,000)	(325,000)	(125,000)	(305,000)
Borrowings from revolving credit facility	100,000		700,000
Net payments from issuance of common stock	(921)	(1,383)	(1,447)	(1,465)
Common stock dividends	(39,374)	(98,567)	(91,925)	(76,099)
Other	(2,723)	(2,432)	(1,062)	(1,062)
Net cash (used in) provided by financing activities	(43,018)	(427,382)	480,566	(383,626)
Net decrease in cash and equivalents	(82,365)	(14,419)	(24,965)	(93,212)
Cash and equivalents at beginning of period	225,916	118,586	143,551	319,128
Cash and equivalents at end of period	$ 143,551	$ 104,167	$ 118,586	$ 225,916