Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ (1,895,299)	$ 22,713
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, depletion and amortization	142,671	115,946
Amortization of intangible assets	3,626	3,626
Exploration expense, non-cash	555,189	483
Impairment of oil and natural gas properties	1,381,258	0
Asset retirement obligations accretion expense	1,438	1,328
Amortization of deferred financing costs	896	871
Deferred tax expense (benefit)	(74,654)	3,415
Stock based compensation	2,879	2,432
Other	(447)	(393)
Changes in operating assets and liabilities:
Accounts receivable	28,031	5,012
Accrued liabilities	(16,547)	(29,955)
Accounts payable	6,726	(6,729)
Drilling advances	(563)	(599)
Other assets and liabilities, net	(326)	(1,588)
Net cash provided by operating activities	134,878	116,562
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisition of EnerVest properties	0	4,250
Acquisitions, other	(69,390)	(53,326)
Additions to oil and natural gas properties	(94,210)	(134,435)
Other investing	(200)	197
Net cash used in investing activities	(163,800)	(183,314)
CASH FLOW FROM FINANCING ACTIVITIES
Contributions from noncontrolling interest owners	0	7,301
Distributions to noncontrolling interest owners	(284)	0
Class A Common Stock repurchase	(6,483)	0
Other financing activities	(452)	0
Net cash provided by (used in) financing activities	(7,219)	7,301
NET CHANGE IN CASH AND CASH EQUIVALENTS	(36,141)	(59,451)
Cash and cash equivalents – Beginning of period	182,633	135,758
Cash and cash equivalents – End of period	146,492	76,307
Supplemental non-cash operating activity:
Cash paid for interest	12,540	12,571
Supplemental non-cash investing and financing activity:
Accruals or liabilities for capital expenditures	47,903	61,778
Supplemental non-cash lease operating activity:
Right-of-use assets obtained in exchange for operating lease obligations	$ 0	$ 2,516