Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Revenues:
Oil and natural gas sales	$ 113,766	$ 43,663	$ 283,455	$ 113,157
Gain (loss) on derivatives, net	53,094	(7,057)	50,557	939
Support infrastructure	1,242		2,726
Other revenue	3	4	8	17
Total revenues	168,105	36,610	336,746	114,113
Costs and expenses:
Lease operating	13,595	3,964	30,039	12,684
Production taxes	11,483	4,250	28,632	10,658
Support infrastructure	610		1,329
General and administrative	3,359	3,255	9,906	9,052
Depletion of oil and natural gas properties	28,953	15,312	71,424	38,770
Depreciation and amortization	1,722	362	3,937	856
Accretion of discount on asset retirement obligations	127	103	350	312
Total costs and expenses	59,849	27,246	145,617	72,332
Operating income (loss)	108,256	9,364	191,129	41,781
Other income (expense):
Interest income	240	1,716	949	3,056
Interest expense, net	(7,472)	(2,058)	(16,644)	(7,893)
Loss on redemption of Senior Notes		(10,948)		(10,948)
Other income (expense)	(2,333)	1,250	4,755	3,116
Total other income (expense)	(9,565)	(10,040)	(10,940)	(12,669)
Income (loss) before income taxes	98,691	(676)	180,189	29,112
Income tax benefit (expense):
Current
Deferred	3,822		(5,287)
Total income tax expense	3,822		(5,287)
Net income (loss)	$ 102,513	$ (676)	$ 174,902	$ 29,112
Net income (loss) per share available to common stockholders:
Basic	$ 0.88	$ (0.01)	$ 1.50	$ 0.27
Diluted	$ 0.86	$ (0.01)	$ 1.48	$ 0.26
Weighted average shares outstanding:
Basic	116,459	115,921	116,409	109,657
Diluted	118,557	115,921	118,552	111,562