Consolidated Statements of Operations (unaudited) - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues:
Oil and gas sales	$ 24,251,000	$ 15,824,000	$ 45,023,000	$ 33,144,000
Expenses:
Lease operating expenses	7,113,000	6,864,000	14,189,000	15,041,000
Production taxes	570,000	(48,000)	878,000	290,000
Depreciation, depletion and amortization	6,841,000	7,193,000	12,958,000	17,331,000
Ceiling test write-down	0	12,782,000	0	31,639,000
General and administrative	4,314,000	3,871,000	7,467,000	12,470,000
Accretion of asset retirement obligation	553,000	618,000	1,100,000	1,226,000
Interest expense	7,147,000	6,503,000	14,405,000	14,760,000
Expenses	26,538,000	37,783,000	50,997,000	92,757,000
Other income:
Other income (expense)	(2,000)	(424,000)	52,000	(327,000)
Loss from operations	(2,289,000)	(22,383,000)	(5,922,000)	(59,940,000)
Income tax (benefit) expense	(189,000)	475,000	(189,000)	561,000
Net loss	(2,100,000)	(22,858,000)	(5,733,000)	(60,501,000)
Preferred stock dividend	1,285,000	1,285,000	2,570,000	2,779,000
Loss available to common stockholders	$ (3,385,000)	$ (24,143,000)	$ (8,303,000)	$ (63,280,000)
Basic
Net income (loss) per share (in usd per share)	$ (0.16)	$ (1.38)	$ (0.39)	$ (3.67)
Diluted
Net income (loss) per share (in usd per share)	$ (0.16)	$ (1.38)	$ (0.39)	$ (3.67)
Weighted average number of common shares:
Basic (shares)	21,215	17,539	21,212	17,248
Diluted (shares)	21,215	17,539	21,212	17,248