CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating revenues
Oil and gas sales	$ 30,819	$ 28,354
Operating expenses
Lease operating expense and taxes	9,796	8,500
Depreciation, depletion and amortization	11,570	10,105
General and administrative	4,317	4,293
Total operating expenses	25,683	22,898
Income from operations	5,136	5,456
Other income (expense)
Interest and other income	15	25
Interest expense	(750)	(775)
Loss on derivative financial instruments	(1,565)	(878)
Total other expense	(2,300)	(1,628)
Income before taxes	2,836	3,828
Deferred income tax expense	7	17
Net income	2,829	3,811
Less dividends and accretion on preferred shares	3	3
Net income applicable to common stockholders	$ 2,826	$ 3,808
Earnings per share - Basic (in dollars per share)	$ 0.04	$ 0.05
Earnings per share - Diluted (in dollars per share)	$ 0.04	$ 0.05
Weighted average common shares outstanding - Basic (in shares)	71,991,863	71,025,089
Weighted average common shares outstanding - Diluted (in shares)	72,685,439	72,194,300