Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Revenues:
Oil and gas sales	$ 177,386	$ 288,631
Costs and Expenses:
General and administrative, net	22,608	24,851
Depreciation, depletion, and amortization	64,564	95,915
Accretion of asset retirement obligation	354	329
Lease operating cost	21,360	20,763
Results of Operations, Expense, Other	8	628
Results of Operations, Transportation Costs	20,649	26,968
Severance and other taxes	10,514	13,874
Write-down of oil and gas properties	355,948	0
Total Operating Expenses	496,005	183,328
Operating Income (Loss)	(318,619)	105,303
Net gain (loss) on commodity derivatives	61,304	24,242
Interest expense, net	(31,228)	(36,561)
Other income (expense), net	72	90
Income (Loss) Before Income Taxes	(288,471)	93,074
Provision (Benefit) for Income Taxes	20,911	(21,582)
Net Income (Loss)	$ (309,382)	$ 114,656
Per Share Amounts-
Earnings (Loss) Per Share, Basic	$ (25.99)	$ 9.76
Earnings (Loss) Per Share, Diluted	$ (25.99)	$ 9.74
Weighted Average Shares Outstanding - Basic	11,902	11,753
Weighted Average Shares Outstanding - Diluted	11,902	11,778