Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Other	$ 8	$ 4
Total revenue	15,726	34,514
Operating costs and expenses:
Lease operating	5,286	7,734
Production and ad valorem taxes	1,537	3,098
Rig expense	299	672
Depreciation, depletion, amortization and accretion	9,279	13,574
Proved property impairment	26,659
General and administrative (including stock-based compensation of $230 and $373)	2,447	2,728
Total operating cost and expenses	45,507	27,806
Operating (loss) income	(29,781)	6,708
Other (income) expense:
Interest income	(9)
Interest expense	4,386	2,967
Amortization of deferred financing fees	129	121
(Gain) 1oss on derivative contracts	(75,730)	29,075
Total other (income) expense	(71,224)	32,163
Income (loss) before income tax	41,443	(25,455)
Income tax (expense) benefit	0	0
Net income (loss)	$ 41,443	$ (25,455)
Net income (loss) per common share - basic (in dollars per share)	$ 0.24	$ (0.15)
Net income (loss) per common share - diluted (in dollars per share)	$ 0.24	$ (0.15)
Weighted average shares outstanding:
Basic (in shares)	169,723	166,041
Diluted (in shares)	169,723	166,041
Oil Revenues [Member]
Revenues:
Revenues	$ 15,535	$ 31,981
Gas Revenues [Member]
Revenues:
Revenues	86	1,473
Natural Gas Liquids Revenues [Member]
Revenues:
Revenues	$ 97	$ 1,056