Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Condensed Consolidated Statements Of Operations [Abstract]
Revenues	$ 5,230	$ 4,785	$ 10,196	$ 8,447
Cost and expenses
Production costs and taxes	2,006	1,678	3,768	3,202
Depreciation, depletion, and amortization	904	666	1,657	1,237
General and administrative	600	719	1,359	1,242
Total cost and expenses	3,510	3,063	6,784	5,681
Net income from operations	1,720	1,722	3,412	2,766
Other income (expense)
Interest expense	(206)	(164)	(394)	(309)
Gain (loss) on derivatives	15	60	(105)	(306)
Gain on sale of assets	33	8	67	11
Total other income (expenses)	(158)	(96)	(432)	(604)
Income before income tax	1,562	1,626	2,980	2,162
Income tax expense	(475)	(649)	(1,020)	(831)
Net income	$ 1,087	$ 977	$ 1,960	$ 1,331
Net income per share
Basic and diluted	$ 0.02	$ 0.02	$ 0.03	$ 0.02
Shares used in computing earnings per share
Basic	60,763,237	60,687,413	60,750,325	60,687,413
Diluted	61,214,257	60,761,140	61,236,066	60,761,881