Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net income (loss)	$ 561,893	$ (96,057)
Adjustments to reconcile net income to cash and restricted cash provided by operating activities:
Depreciation, depletion and amortization	89,393	94,293
Amortization of right of use asset - operating leases	4,501	4,478
Amortization of deferred financing costs	968	2,491
Loss on debt extinguishment	0	5,744
Non-cash interest expense	15,622	13,544
Amortization of contract obligations	(21,947)	(16,747)
Loss on disposal of property, plant and equipment	257	529
Equity-based compensation expense	1,815	199
Deferred income taxes	42,061	(7,031)
Reclamation of asset retirement obligations	(3,601)	(1,562)
Increase (decrease) in provision for discounting and credit losses	584	(5,644)
Changes in operating assets and liabilities:
Accounts receivable - including related party receivables	(304,707)	45,205
Inventories	9,700	(10,630)
Other current assets	(18,460)	(3,601)
Accounts payable	(5,160)	32,979
Accrued expenses and other current liabilities	71,595	611
Operating lease liabilities	(4,163)	(5,509)
Income tax payable	73,114	0
Change in other liabilities	4,827	3,632
Net cash provided by operating activities	518,292	56,924
Cash flows from investing activities:
Capital expenditures	(87,875)	(58,307)
Purchase of restricted deposits	(6,251)	(84,342)
Redemption of restricted deposits	606	19,726
Net cash used in investing activities	(93,520)	(122,923)
Cash flows from financing activities:
Proceeds from interest bearing liabilities and other financial liabilities	0	411,524
Debt issuance costs and other financing costs	0	(15,143)
Principal payments on interest bearing liabilities and other financial liabilities	(7,085)	(365,413)
Principal payments on finance lease obligations	(61)	0
Premiums paid on early redemption of debt	(22)	0
Dividends paid	(348,423)	0
Proceeds from stock issuance, net	0	97,741
Net cash (used in) provided by financing activities	(355,591)	128,709
Net increase in cash and restricted cash	69,181	62,710
Effect of exchange rate changes on cash and restricted cash	(21,228)	5,215
Cash and restricted cash at beginning of period	437,931	45,736
Cash and restricted cash at end of period	485,884	113,661
Supplemental disclosure of cash flow information:
Cash payments for interest	18,338	13,006
Cash paid (refund) for taxes	69,388	(4,433)
Restricted cash	$ 251	$ 251