CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues
Total revenues	$ 124,699	$ 45,482	$ 213,254	$ 136,861
Operating expenses
Lease operating	9,728	9,094	18,553	19,626
Gathering, processing and transportation	5,173	5,593	9,847	11,037
Production and ad valorem taxes	6,721	2,630	12,234	8,784
General and administrative	6,985	7,986	20,162	15,216
Depreciation, depletion and amortization	28,795	37,135	52,679	77,853
Impairments of oil and gas properties	0	35,509	1,811	35,509
Total operating expenses	57,402	97,947	115,286	168,025
Operating income (loss)	67,297	(52,465)	97,968	(31,164)
Other income (expense)
Interest expense	(5,303)	(8,536)	(10,700)	(16,716)
Gain (Loss) on Extinguishment of Debt	0	0	(1,231)	0
Derivatives	(54,227)	(34,349)	(98,595)	116,770
Other, net	0	(55)	(6)	(63)
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax	7,767	(95,405)	(12,564)	68,827
Net income (loss)	7,596	(94,715)	(12,425)	68,379
Net (income) loss attributable to Noncontrolling interest	(4,551)	0	1,898	0
Net income (loss) attributable to common shareholders	$ 3,045	$ (94,715)	$ (10,527)	$ 68,379
Net income (loss) per share:
Basic (in dollars per share)	$ 0.20	$ (6.24)	$ (0.69)	$ 4.51
Diluted (in dollars per share)	$ 0.20	$ (6.24)	$ (0.69)	$ 4.48
Weighted average shares outstanding – basic (in shares)	15,311	15,167	15,287	15,159
Weighted average shares outstanding – diluted (in shares)	38,372	15,167	15,287	15,268
Current Federal, State and Local, Tax Expense (Benefit)	$ (171)	$ 690	$ 139	$ (448)
Oil and Gas, Exploration and Production [Member]
Revenues
Revenues and other	116,314	41,197	198,227	127,505
Oil and Condensate [Member]
Revenues
Revenues and other	4,388	1,578	7,950	3,471
Natural Gas, Production [Member]
Revenues
Revenues and other	3,087	2,020	5,920	4,710
Product and Service, Other [Member]
Revenues
Revenues and other	$ 910	$ 687	$ 1,157	$ 1,175