Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net income and comprehensive income	$ 137,308	$ 136,114
Adjustments to reconcile net income and comprehensive income to net cash provided by operating activities:
Depreciation, depletion and amortization	91,976	89,324
Non-cash employee stock compensation expense	4,542	2,837
Fair value changes in equity securities	1,577	(3,859)
Deferred tax (benefit) expense	(28,114)	8,861
Other	491	572
Changes in assets and liabilities:
Royalty receivables	17,220	(2,925)
Stream inventory	(1,564)	(3,785)
Income tax receivable	(2,797)	4,419
Prepaid expenses and other assets	(1,359)	(582)
Accounts payable	592	3,786
Income tax payable	4,976	(8,839)
Uncertain tax positions		(12,358)
Other liabilities	(3,519)	(479)
Net cash provided by operating activities	221,329	213,086
Cash flows from investing activities:
Acquisition of stream and royalty interests	(37,841)	(119,315)
Khoemacau subordinated debt facility		(18,000)
Proceeds from sale of equity securities		8,651
Other	(36)	(177)
Net cash used in investing activities	(37,877)	(128,841)
Cash flows from financing activities:
Repayment of debt		(200,000)
Net payments from issuance of common stock	108	(50)
Common stock dividends	(45,953)	(39,364)
Other	(541)	(774)
Net cash used in financing activities	(46,386)	(240,188)
Net increase (decrease) in cash and equivalents	137,066	(155,943)
Cash and equivalents at beginning of period	143,551	381,859
Cash and equivalents at end of period	$ 280,617	$ 225,916