CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues
Crude oil	$ 100,564	$ 56,995	$ 250,489	$ 174,100
Natural gas liquids (NGLs)	8,212	6,671	22,652	23,298
Natural gas	12,872	11,909	40,465	37,098
(Loss) gain on sales of property and equipment, net	(186)	1,573	(479)	2,407
Other	151	551	1,339	2,052
Total revenues	121,613	77,699	314,466	238,955
Operating expenses
Lease operating	8,457	6,206	24,891	24,613
Gathering, processing and transportation	3,039	3,127	9,598	11,672
Production and ad valorem taxes	6,597	4,589	19,532	7,915
General and administrative	12,677	11,634	39,276	35,522
Exploration	3,957	9,265	18,097	26,647
Depreciation, depletion and amortization	62,450	49,331	178,355	151,888
Impairments	132,224	700	132,224	29,316
Loss on long-term purchase commitment	0	17,332	0	17,332
Total operating expenses	229,401	102,184	421,973	304,905
Operating loss	(107,788)	(24,485)	(107,507)	(65,950)
Other income (expense)
Interest expense	(20,218)	(14,979)	(56,505)	(44,837)
Gains (Losses) on Extinguishment of Debt	0	(3,144)	(29,157)	(3,144)
Derivatives	(24,035)	(12,271)	(23,208)	31,250
Other	35	60	79	89
Loss from operations before income taxes	(152,006)	(54,819)	(216,298)	(82,592)
Income tax benefit	53,106	22,208	75,577	32,444
Net loss	(98,900)	(32,611)	(140,721)	(50,148)
Preferred stock dividends	(1,725)	0	(5,175)	0
Loss attributable to common shareholders - Basic and Diluted	$ (100,625)	$ (32,611)	$ (145,896)	$ (50,148)
Net loss per share:
Basic (in dollars per share)	$ (1.54)	$ (0.71)	$ (2.38)	$ (1.09)
Diluted (in dollars per share)	$ (1.54)	$ (0.71)	$ (2.38)	$ (1.09)
Weighted average shares outstanding - basic	65,465	46,050	61,272	46,009
Weighted average shares outstanding - diluted	65,465	46,050	61,272	46,009