Consolidated Statements of Operations (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Consolidated Statements of Operations
Oil and gas production revenues	$ 172,883	$ 101,099	$ 339,383	$ 194,128
Costs, operating expenses and other:
Lease operating	41,640	32,295	74,047	61,930
Exploration	1,000	9	1,000	721
General and administrative	10,166	8,060	19,902	18,623
Depreciation, depletion and amortization	74,318	60,115	153,638	96,116
Impairment of oil and gas properties	45,704	3,853	45,704	12,090
Accretion of asset retirement obligation	3,771	3,463	7,435	6,853
Drilling interruption costs	1,193	8,714	19,691	8,714
Loss on abandonment	114	50	1,383	201
Gain on exchange/disposal of properties		(46)		(12,020)
Total operating expenses	177,906	116,513	322,800	193,228
Income (loss) from operations	(5,023)	(15,414)	16,583	900
Other income (expense):
Interest income	59	154	116	298
Interest expense, net	(97,043)	(64,645)	(172,528)	(76,864)
Derivative income (expense)	35,918	23,929	(14,344)	27,464
Gain (loss) on debt extinguishment	1,091	(78,171)	1,091	(78,171)
Total other non operating income (expenses)	(59,975)	(118,733)	(185,665)	(127,273)
Loss before income taxes	(64,998)	(134,147)	(169,082)	(126,373)
Income tax benefit (expense):
Current		326		(227)
Deferred	14,494	57,473	5,352	56,621
Total	14,494	57,799	5,352	56,394
Net loss	(50,504)	(76,348)	(163,730)	(69,979)
Less income attributable to the redeemable noncontrolling interest	(3,562)	(3,771)	(7,125)	(8,226)
Less convertible preferred stock dividends	(2,786)	(2,800)	(5,544)	(5,600)
Net loss attributable to common shareholders	$ (56,852)	$ (82,919)	$ (176,399)	$ (83,805)
Net loss per share attributable to common shareholders:
Basic	$ (1.11)	$ (1.63)	$ (3.46)	$ (1.66)
Diluted	$ (1.11)	$ (1.63)	$ (3.46)	$ (1.66)
Weighted average number of common shares:
Basic	51,048	50,767	51,034	50,609
Diluted	51,048	50,767	51,034	50,609