CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues:
Oil and gas production revenues	$ 133,701	$ 92,268	$ 65,590
Other	75	56	74
Total revenue	133,776	92,324	65,664
Operating costs and expenses:
Lease operating	25,875	23,205	22,578
Production taxes	11,462	8,437	6,588
Depreciation, depletion, and amortization	43,139	25,588	20,953
General and administrative (including stock-based compensation of $2,091, $2,114 and $2,703, respectively)	13,378	11,997	10,013
Operating expenses	93,854	69,227	60,132
Operating income	39,922	23,097	5,532
Other (income) expense:
Interest income	(2)	(3)	(4)
Interest expense	2,570	4,556	5,503
Amortization of deferred financing fees	934	1,367	937
Gain on sale of properties	0	(33,377)	0
Loss (gain) on derivative contracts - realized	(361)	5,035	459
Gain on derivative contracts - unrealized	(24,876)	(2,561)	(2,669)
Earnings from equity method investment	0	0	(2,207)
Other	(7)	539	97
Total other (income) expense	(21,742)	(24,444)	2,116
Income from continuing operations before income tax	61,664	47,541	3,416
Income tax (expense) benefit	287	(700)	(310)
Net income from continuing operations	61,951	46,841	3,106
Net (loss) income from discontinued operations - net of tax	1,318	(8,194)	(21,897)
Net income (loss)	$ 63,269	$ 38,647	$ (18,791)
Net income (loss) per common share - basic
Continuing operations (in dollars per share)	$ 0.63	$ 0.51	$ 0.04
Discontinued operations (in dollars per share)	$ 0.01	$ (0.09)	$ (0.24)
Total (in dollars per share)	$ 0.64	$ 0.42	$ (0.20)
Net income (loss) per common share - diluted
Continuing operations (in dollars per share)	$ 0.61	$ 0.50	$ 0.04
Discontinued operations (in dollars per share)	$ 0.01	$ (0.09)	$ (0.24)
Total (in dollars per share)	$ 0.62	$ 0.41	$ (0.20)