Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues:
Oil and gas sales	$ 52,752	$ 42,412
Costs and Expenses:
General and administrative, net	5,576	9,834
Depreciation, depletion, and amortization	13,131	9,715
Accretion of asset retirement obligation	159	564
Lease operating costs	4,961	5,773
Transportation and gas processing	5,025	4,385
Severance and other taxes	3,031	1,618
Total Operating Expenses	31,883	31,889
Operating Income (Loss)	20,869	10,523
Net gain (loss) on commodity derivatives	(6,355)	10,936
Interest expense, net	(5,890)	(3,607)
Other income (expense), net	(158)	(142)
Income (Loss) Before Income Taxes	8,466	17,710
Provision (Benefit) for Income Taxes	0	0
Net Income (Loss)	$ 8,466	$ 17,710
Per Share Amounts-
Earnings Per Share, Basic	$ 0.73	$ 1.58
Earnings Per Share, Diluted	$ 0.72	$ 1.57
Weighted Average Shares Outstanding - Basic	11,602	11,232
Weighted Average Shares Outstanding - Diluted	11,727	11,323