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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net loss including non-controlling interests	$ (4,334,275)	$ (107,978)
Adjustments to reconcile net loss including non-controlling interests to net cash provided by operating activities:
Depreciation, depletion and amortization	203,755	189,833
Gain on extinguishment of debt	(83,887)	0
(Gain) loss on sale of properties	(11,226)	2,922
Impairment	4,823,678	629
Deferred income taxes	(254,677)	(3,547)
Derivative instruments	(285,322)	117,611
Equity-based compensation expenses	6,807	9,013
Deferred financing costs amortization and other	6,188	6,930
Working capital and other changes:
Change in accounts receivable, net	149,819	(71,083)
Change in inventory	(4,300)	(3,184)
Change in prepaid expenses	635	1,505
Change in accounts payable, interest payable and accrued liabilities	(106,145)	36,666
Change in other assets and liabilities, net	(3,275)	(4,391)
Net cash provided by operating activities	107,775	174,926
Cash flows from investing activities:
Capital expenditures	(147,601)	(237,448)
Proceeds from sale of properties	11,813	0
Derivative settlements	5,020	13,446
Net cash used in investing activities	(130,768)	(224,002)
Cash flows from financing activities:
Proceeds from Revolving Credit Facilities	545,000	420,000
Principal payments on Revolving Credit Facilities	(331,000)	(368,000)
Repurchase of senior unsecured notes	(68,040)	0
Deferred financing costs	0	(43)
Purchases of treasury stock	(2,308)	(4,261)
Distributions to non-controlling interests	(6,028)	(4,937)
Payments on finance lease liabilities	(648)	(256)
Other	0	(175)
Net cash provided by financing activities	136,976	42,328
Increase (decrease) in cash and cash equivalents	113,983	(6,748)
Cash and cash equivalents:
Beginning of period	20,019	22,190
End of period	134,002	15,442
Supplemental non-cash transactions:
Change in accrued capital expenditures	25,333	(23,686)
Change in asset retirement obligations	$ 1,084	$ 2,016

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