Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income (loss) including non-controlling interests	$ (90,647)	$ (19,500)	$ 127,446
Adjustments to reconcile net income (loss) including non-controlling interests to net cash provided by operating activities:
Depreciation, depletion and amortization	787,192	636,296	530,802
(Gain) loss on extinguishment of debt	(4,312)	13,848	0
(Gain) loss on sale of properties	4,455	(28,587)	(1,774)
Impairment	10,257	384,228	6,887
Deferred income taxes	(32,699)	(5,866)	(202,884)
Derivative instruments	106,314	(28,457)	71,657
Equity-based compensation expenses	33,607	29,273	26,534
Deferred financing costs amortization and other	27,263	29,057	18,311
Working capital and other changes:
Change in accounts receivable, net	13,729	(23,508)	(166,386)
Change in inventory	(5,893)	(14,346)	(2,501)
Change in prepaid expenses	325	(2,354)	(838)
Change in accounts payable, interest payable and accrued liabilities	53,051	26,116	123,107
Change in other assets and liabilities, net	(9,789)	221	(22,485)
Net cash provided by operating activities	892,853	996,421	507,876
Cash flows from investing activities:
Capital expenditures	(869,221)	(1,148,961)	(647,349)
Acquisitions	(21,009)	(581,650)	(61,874)
Proceeds from sale of properties	42,376	333,229	5,774
Costs related to sale of properties	0	(2,850)	(366)
Derivative settlements	19,098	(213,528)	(8,264)
Other	0	224	(2,681)
Net cash used in investing activities	(828,756)	(1,613,536)	(714,760)
Cash flows from financing activities:
Proceeds from Revolving Credit Facilities	1,982,000	3,224,000	1,162,000
Principal payments on Revolving Credit Facilities	(1,972,500)	(2,586,000)	(1,377,000)
Repurchase of senior unsecured notes	(45,790)	(423,340)	0
Proceeds from issuance of senior unsecured notes	0	400,000	0
Deferred financing costs	(1,052)	(13,862)	(2,714)
Proceeds from sale of common stock, net of offering costs	0	0	302,191
Proceeds from sale of Oasis Midstream common units, net of offering costs	0	44,503	134,185
Purchases of treasury stock	(4,856)	(6,846)	(6,229)
Distributions to non-controlling interests	(21,270)	(14,114)	0
Payments on finance lease liabilities	(2,382)
Other	(418)	(1,756)	(55)
Net cash provided by (used in) financing activities	(66,268)	622,585	212,378
Increase (decrease) in cash and cash equivalents	(2,171)	5,470	5,494
Cash and cash equivalents:
Beginning of period	22,190	16,720	11,226
End of period	20,019	22,190	16,720
Supplemental cash flow information:
Cash paid for interest, net of capitalized interest	155,833	141,196	129,463
Cash paid for income taxes	111	38	12
Cash received for income tax refunds	146	25	281
Supplemental non-cash transactions:
Change in accrued capital expenditures	(82,414)	68,946	83,508
Change in asset retirement obligations	4,917	3,880	(789)
Installment notes from acquisition	0	0	4,875
Issuance of shares in connection with acquisition	$ 0	$ 371,220	$ 0