Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net income and comprehensive income	$ 65,962	$ 54,193
Adjustments to reconcile net income and comprehensive income to net cash provided by operating activities:
Depreciation, depletion and amortization	47,988	41,296
Non-cash employee stock compensation expense	2,124	1,344
Fair value changes in equity securities	(613)	(1,902)
Deferred tax expense (benefit)	688	(645)
Other	245	286
Changes in assets and liabilities:
Royalty receivables	569	(1,111)
Stream inventory	3,118	(591)
Income tax receivable	518	(5,731)
Prepaid expenses and other assets	(7,309)	98
Accounts payable	(208)	1,793
Income tax payable	(10,910)	2,342
Uncertain tax positions		(310)
Other liabilities	(1,039)	1,171
Net cash provided by operating activities	101,133	92,233
Cash flows from investing activities:
Acquisition of stream and royalty interests	(37,800)	(33,656)
Other	(11)	(87)
Net cash used in investing activities	(37,811)	(33,743)
Cash flows from financing activities:
Repayment of debt		(50,000)
Net payments from issuance of common stock	141	(10)
Common stock dividends	(22,978)	(19,682)
Other	(329)	(397)
Net cash used in financing activities	(23,166)	(70,089)
Net increase (decrease) in cash and equivalents	40,156	(11,599)
Cash and equivalents at beginning of period	143,551	381,859
Cash and equivalents at end of period	$ 183,707	$ 370,260