Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenues
Revenues	$ 195,152	$ 201,169
Expenses
Lease operating and gas gathering	36,581	26,008
Production and ad valorem taxes	11,169	11,029
Depreciation, depletion and amortization	88,618	83,582
Loss on sale of oil and gas properties	33,508	0
Impairment of oil and gas properties	48,412	12,169
General and administrative	16,489	16,017
Acquisition costs and other	1,840	1,821
Total expenses	236,617	150,626
(Loss) income from operations	(41,465)	50,543
Other income (expense)
Interest expense	(43,879)	(38,943)
Unrealized gain on warrants	691	416
(Loss) gain on derivative financial instruments	(30,861)	22,744
Loss on extinguishment of debt	0	(8,620)
Total other expense, net	(74,049)	(24,403)
(Loss) income before income taxes	(115,514)	26,140
Income tax benefit (expense)	12,495	(6,792)
Net (loss) income	(103,019)	19,348
Preferred stock dividends	(8,544)	(7,816)
Net (loss) income attributable to common stockholders	$ (111,563)	$ 11,532
Net (loss) income per common share attributable to common stockholders
Basic (in dollars per share)	$ (4.48)	$ 0.29
Diluted (in dollars per share)	$ (4.48)	$ 0.28
Weighted Average Shares Outstanding
Basic (in shares)	24,875,793	24,619,730
Diluted (in shares)	24,875,793	24,801,143
Oil sales
Revenues
Revenues	$ 157,873	$ 167,743
Natural gas liquid sales
Revenues
Revenues	15,668	18,471
Natural gas sales
Revenues
Revenues	$ 21,611	$ 14,955