CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 98,918,000	$ (310,557,000)	$ 70,589,000
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Loss on extinguishment of debt	8,860,000	0	0
Depreciation, depletion and amortization	131,657,000	140,673,000	174,569,000
Impairments of oil and gas properties	1,811,000	391,849,000	0
Derivative contracts:
Net (gains) losses	136,999,000	(88,422,000)	68,131,000
Cash settlements and premiums received (paid), net	(130,475,000)	78,087,000	(4,136,000)
Deferred income tax expense (benefit)	1,249,000	(1,424,000)	3,373,000
Non-cash interest expense	2,735,000	4,150,000	3,354,000
Share-based compensation	15,589,000	3,284,000	4,082,000
Other, net	19,000	13,000	47,000
Changes in operating assets and liabilities:
Accounts receivable, net	(38,676,000)	28,078,000	(5,079,000)
Accounts payable and accrued expenses	60,338,000	(24,244,000)	5,736,000
Other assets and liabilities	1,000	778,000	574,000
Net cash provided by operating activities	289,025,000	222,265,000	321,240,000
CASH FLOWS FROM INVESTING ACTIVITIES
Acquisitions, net of cash acquired (paid)	11,009,000	0	(6,516,000)
Capital expenditures	(256,343,000)	(168,565,000)	(362,743,000)
Proceeds from sales of assets, net	160,000	87,000	215,000
Net cash used in investing activities	(245,174,000)	(168,478,000)	(369,044,000)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from credit facility borrowings	70,000,000	51,000,000	76,400,000
Repayments of credit facility borrowings	(176,400,000)	(99,000,000)	(35,000,000)
Repayments of second lien term loan	(200,000,000)	0	0
Proceeds from 9.25% Senior Notes due 2026, net of discount	396,072,000	0	0
Repayments of acquired and other debt	(249,700,000)	0	0
Proceeds from redeemable common units	151,160,000	0	0
Proceeds from redeemable preferred stock	2,000	0	0
Transaction costs paid on behalf of Noncontrolling interest	(5,543,000)	0	0
Issuance costs paid for Noncontrolling interest securities	(3,758,000)	0	0
Withholding taxes for share-based compensation	(656,000)	(487,000)	(1,046,000)
Debt issuance costs paid	(14,367,000)	(78,000)	(2,616,000)
Net cash provided by (used in) financing activities	(33,190,000)	(48,565,000)	37,738,000
Net increase (decrease) in cash and cash equivalents	10,661,000	5,222,000	(10,066,000)
Cash and cash equivalents – beginning of period	13,020,000	7,798,000	17,864,000
Cash and cash equivalents – end of period	23,681,000	13,020,000	7,798,000
Cash paid for:
Interest, net of amounts capitalized	15,609,000	27,333,000	32,398,000
Income tax refunds, net of payments	288,000	(2,471,000)	(2,471,000)
Non-cash investing and financing activities:
Changes in property and equipment related to capital contributions	(38,561,000)	0	0
Changes in accrued liabilities related to capital expenditures	16,726,000	(18,671,000)	(3,602,000)
Change in property and equipment related to acquisitions	(480,563,000)	0	(6,211,000)
Equity and replacement awards issued as consideration in the Lonestar Acquisition	$ 173,576,000	$ 0	$ 0