CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Operating revenues
Oil and gas sales	$ 26,893	$ 20,982	$ 50,073	$ 42,571
Operating expenses
Lease operating expense and taxes	8,706	6,734	16,441	13,966
Depreciation, depletion and amortization	6,849	5,141	12,978	9,923
General and administrative	3,599	4,161	7,163	7,613
Total operating expenses	19,154	16,036	36,582	31,502
Income from operations	7,739	4,946	13,491	11,069
Other income (expense)
Interest and other income	16	90	35	128
Interest expense	(774)	(881)	(1,344)	(1,753)
Gain (loss) on derivative financial instruments	2,037	4,368	(3,735)	6,262
Total other income (expense)	1,279	3,577	(5,044)	4,637
Income before taxes	9,018	8,523	8,447	15,706
Deferred income tax benefit	(12)	(40)	(7)	(43)
Net income	9,030	8,563	8,454	15,749
Less dividends and accretion on preferred shares	3	3	5	14
Net income applicable to common stockholders	$ 9,027	$ 8,560	$ 8,449	$ 15,735
Earnings per share - Basic (in dollars per share)	$ 0.13	$ 0.12	$ 0.12	$ 0.22
Earnings per share - Diluted (in dollars per share)	$ 0.13	$ 0.12	$ 0.12	$ 0.22
Weighted average common shares outstanding - Basic (in shares)	70,815,871	70,364,154	70,779,033	70,224,672
Weighted average common shares outstanding - Diluted (in shares)	72,041,688	71,468,623	72,107,056	71,293,378