Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating activities
Net income	$ 70,786	$ 275,461
Adjustments to reconcile to cash from operating activities:
Depreciation, depletion and amortization	77,259	71,556
Accretion on asset retirement obligations	11,739	10,585
Deferred income taxes	5,567	49,824
Employee stock-based compensation expense	10,445	13,206
Amortization relating to financing activities	1,441	884
Gain on disposals and divestitures, net	(150)	(393)
Reclamation work completed	(4,451)	(11,757)
Contribution to fund for asset retirement obligations	(3,745)	(2,664)
Changes in:
Receivables	39,306	(13,057)
Inventories	(5,604)	(40,295)
Accounts payable, accrued expenses and other current liabilities	(29,223)	(53,729)
Income taxes, net	(45)	(828)
Other	14,121	24,093
Cash provided by operating activities	187,446	322,886
Investing activities
Capital expenditures	(92,366)	(76,606)
Minimum royalty payments	(988)	(1,113)
Proceeds from disposals and divestitures	199	439
Purchases of short-term investments	(30,535)	(13,772)
Proceeds from sales of short-term investments	27,846	17,488
Investments in and advances to affiliates, net	(6,516)	(9,927)
Cash used in investing activities	(102,360)	(83,491)
Financing activities
Payments on convertible debt		(58,430)
Net payments on other debt	(21,992)	(24,849)
Debt financing costs	(1,516)
Purchases of treasury stock	(30,747)	(93,803)
Dividends paid	(63,757)	(111,913)
Payments for taxes related to net share settlement of equity awards	(24,339)	(27,217)
Proceeds from warrants exercised		43,750
Cash used in financing activities	(129,186)	(273,962)
Decrease in cash and cash equivalents, including restricted cash	(44,100)	(34,567)
Cash and cash equivalents, including restricted cash, beginning of period	288,907	237,159
Cash and cash equivalents, including restricted cash, end of period	244,807	202,592
SUPPLEMENTAL CASH FLOW INFORMATION
Cash and cash equivalents	243,707	201,492
Restricted Cash	1,100	1,100
Cash and cash equivalents, including restricted cash, end of period	244,807	202,592
Term loan due 2025
Financing activities
Proceeds from issuance of term loan due 2025	20,000
Payments on term loan	(3,333)
Term loan due 2024
Financing activities
Payments on term loan	$ (3,502)	$ (1,500)