Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Oil and gas sales	$ 53,377	$ 72,064
Costs and Expenses [Abstract]
General and administrative, net	5,913	6,276
Depreciation, depletion, and amortization	23,439	21,805
Accretion of asset retirement obligation	86	83
Lease operating costs	5,812	4,531
Workovers	0	646
Transportation and gas processing	6,643	6,406
Severance and other taxes	2,964	3,316
Write-down of oil and gas properties	95,606	0
Operating Expenses	140,463	43,063
Operating Income (Loss)	(87,086)	29,001
Net gain (loss) on commodity derivatives	88,287	(4,022)
Interest expense, net	(8,407)	(8,759)
Other Nonoperating Income (Expense)	107	65
Income (Loss) Before Income Taxes	(7,099)	16,285
Provision (Benefit) for Income Taxes	(1,241)	232
Net Income (Loss)	$ (5,858)	$ 16,053
Per Share Amounts-
Earnings Per Share, Basic	$ (0.50)	$ 1.37
Earnings Per Share, Diluted	$ (0.50)	$ 1.36
Weighted Average Shares Outstanding - Basic	11,825	11,708
Weighted Average Shares Outstanding - Diluted	11,825	11,788