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	$ 210,418	$ 445,969	$ 123,920
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	794,740	584,857	352,247
Leasehold abandonments and impairments	99,225	160,834	32,872
Accretion of asset retirement obligations	1,465	1,422	971
(Gain) loss on sale of property	(2,095)	(6,454)	14,332
Loss on early extinguishment of debt	0	0	3,891
Amortization of bond premium	(516)	(516)	(516)
Deferred income tax expense	61,437	105,475	5,752
Change in TRA liability	0	437	(35,847)
Stock-based compensation expense	20,682	19,877	19,619
Loss (gain) on derivatives	131,212	(50,342)	66,135
Net cash (paid) received for derivative settlements	(10,022)	6,279	16,172
Net cash paid for option premiums	(46,242)	(47,644)	(28,426)
Other	9,028	7,762	6,111
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	(64,570)	(12,956)	(95,239)
Accounts receivable—related parties	(89)	294	(98)
Other current assets	3,690	(689)	45,417
Other noncurrent assets	524	(100)	(536)
Accounts payable and accrued expenses	49,466	(13,395)	122,992
Revenue and severance taxes payable	27,291	17,348	40,465
Increase (Decrease) in Other Noncurrent Liabilities	119	0	0
Net cash provided by operating activities	1,286,279	1,218,974	690,750
CASH FLOWS FROM INVESTING ACTIVITIES:
Development of oil and natural gas properties	(1,373,095)	(1,787,673)	(1,089,256)
Acquisitions of oil and natural gas properties	(52,020)	(136,972)	(2,192,093)
Additions to other property and equipment	(22,915)	(93,457)	(54,896)
Proceeds from sales of property, plant and equipment	41,326	233,647	30,537
Maturity of short-term investments	0	149,331	0
Purchases of short-term investments	0	0	(149,283)
Other	5,905	41,088	(1,869)
Net cash used in investing activities	(1,400,799)	(1,594,036)	(3,456,860)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings under long-term debt	617,000	0	1,152,780
Payments on long-term debt	(617,000)	(2,888)	(74,769)
Finance Lease, Principal Payments	(2,746)	0	0
Debt issuance costs	0	(47)	(17,371)
Proceeds from issuance of common stock, net	0	0	2,123,344
Purchases of common stock	(5,679)	(11,014)	(354)
Payments of Dividends	(18,929)	0	0
Distributions to owner of consolidated subsidiary	(603)	(1,962)	0
Net cash (used in) provided by financing activities	(27,957)	(15,911)	3,183,630
Net (decrease) increase in cash and cash equivalents	(142,477)	(390,973)	417,520
Cash, cash equivalents, and restricted cash at beginning of year	163,216	554,189	136,669
Cash, cash equivalents, and restricted cash at end of year	20,739	163,216	554,189
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid for interest	(129,387)	(127,668)	(63,170)
Cash received (paid) for income taxes	302	0	(350)
SUPPLEMENTAL DISCLOSURE OF NON-CASH ACTIVITIES:
Asset retirement obligations incurred, including changes in estimate	(4,087)	2,111	15,428
(Reductions) additions to oil and natural gas properties - change in capital accruals	(176)	(25,455)	118,145
Net premiums paid on options that settled during the period	(43,278)	(71,566)	(37,103)
Common stock issued for oil and natural gas properties	0	0	1,183,501
Gain (Loss) on Contract Termination	(13,250)	0	0
Gain (Loss) on Sale of Properties	$ 2,095	$ 6,454	$ (14,332)