Consolidated Statements of Operations (unaudited) - USD ($) shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues:
Oil and gas sales	$ 28,184,000	$ 17,094,000	$ 73,207,000	$ 50,238,000
Expenses:
Lease operating expenses	8,863,000	6,857,000	23,052,000	21,898,000
Production taxes	1,112,000	319,000	1,990,000	609,000
Depreciation, depletion and amortization	8,795,000	6,030,000	21,753,000	23,361,000
Ceiling test write-down	0	8,665,000	0	40,304,000
General and administrative	3,341,000	8,827,000	10,808,000	21,297,000
Accretion of asset retirement obligation	571,000	670,000	1,671,000	1,896,000
Interest expense	7,371,000	7,737,000	21,776,000	22,497,000
Expenses	30,053,000	39,105,000	81,050,000	131,862,000
Other income:
Other income (expense)	(16,000)	(28,000)	36,000	(355,000)
Loss from operations	(1,885,000)	(22,039,000)	(7,807,000)	(81,979,000)
Income tax expense (benefit)	(84,000)	(18,000)	(274,000)	543,000
Net loss	(1,801,000)	(22,021,000)	(7,533,000)	(82,522,000)
Preferred stock dividend	1,284,000	1,285,000	3,854,000	4,064,000
Loss available to common stockholders	$ (3,085,000)	$ (23,306,000)	$ (11,387,000)	$ (86,586,000)
Basic
Net loss per share (in usd per share)	$ (0.15)	$ (1.31)	$ (0.54)	$ (4.97)
Diluted
Net loss per share (in usd per share)	$ (0.15)	$ (1.31)	$ (0.54)	$ (4.97)
Weighted average number of common shares:
Basic (shares)	21,230	17,736	21,222	17,412
Diluted (shares)	21,230	17,736	21,222	17,412