Consolidated Statements Of Operations (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Consolidated Statements Of Operations [Abstract]
Revenues	$ 13,788	$ 15,700	$ 20,557
Cost and expenses
Production costs and taxes	5,994	5,524	7,182
Depreciation, depletion, and amortization	3,030	2,912	3,403
General and administrative	2,707	2,059	2,613
Impairment	2,796
Total cost and expenses	14,527	10,495	13,198
Income (loss) from operations	(739)	5,205	7,359
Other income (expense)
Net interest expense	(88)	(357)	(743)
(Loss) on derivatives			(142)
Gain on sale of assets	33	118	83
Total other (expense)	(55)	(239)	(802)
Income (loss) from continuing operations before income tax	(794)	4,966	6,557
Deferred income tax expense	12	(1,915)	(2,226)
Current income tax expense	(6)	(95)	(87)
Net income (loss) from continuing operations	(788)	2,956	4,244
(Loss) from discontinued operations, net of income tax benefit		(137)	(4,311)
Net income (loss)	$ (788)	$ 2,819	$ (67)
Net income (loss) per share - Basic
Net income (loss) from continuing operations	$ (0.01)	$ 0.05	$ 0.07
Net loss from discontinued operations		$ 0.00	$ (0.07)
Net income (loss) per share - Diluted
Net income (loss) from continuing operations	$ (0.01)	$ 0.05	$ 0.07
Net loss from discontinued operations		$ 0.00	$ (0.07)
Shares used in computing earnings per share
Basic	60,842,413	60,842,413	60,778,356
Diluted	60,849,931	60,919,878	61,154,631