Consolidated Statements Of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Crude oil revenues	$ 165,962	$ 105,805	$ 296,324	$ 193,287
Natural gas liquids revenues	5,983	2,766	11,871	5,507
Natural gas revenues	21,530	25,653	42,492	47,331
Total revenues	193,475	134,224	350,687	246,125
Costs and Expenses
Lease operating	17,378	11,797	29,983	21,992
Production taxes	8,182	4,584	14,273	9,097
Ad valorem taxes	1,906	2,863	3,334	4,723
Depreciation, depletion and amortization	80,746	50,528	145,340	96,225
General and administrative	27,682	17,834	55,943	34,007
Loss on derivative instruments, net	39,950	(25,726)	60,630	(11,172)
Interest expense, net	11,931	13,989	24,356	28,965
Other (income) expense, net	413	(27)	987	(67)
Total Costs and Expenses	188,188	75,842	334,846	183,770
Income From Continuing Operations Before Income Taxes	5,287	58,382	15,841	62,355
Income tax expense	(2,073)	(22,545)	(6,006)	(23,994)
Income From Continuing Operations	3,214	35,837	9,835	38,361
Income (Loss) From Discontinued Operations, Net of Income Taxes	(895)	1,132	(1,540)	24,790
Net Income (loss)	$ 2,319	$ 36,969	$ 8,295	$ 63,151
Net Income (Loss) Per Common Share - Basic
Net income from continuing operations - basic (in dollars per share)	$ 0.07	$ 0.89	$ 0.22	$ 0.96
Net income from discontinued operations - basic (in dollars per share)	$ (0.02)	$ 0.03	$ (0.04)	$ 0.62
Net income per share, basic (in dollars per share)	$ 0.05	$ 0.92	$ 0.18	$ 1.58
Net Income (Loss) Per Common Share - Diluted
Net income from continuing operations - diluted (in dollars per share)	$ 0.07	$ 0.88	$ 0.21	$ 0.95
Net income from discontinued operations - diluted (in dollars per share)	$ (0.02)	$ 0.03	$ (0.03)	$ 0.61
Net income per share, diluted (in dollars per share)	$ 0.05	$ 0.91	$ 0.18	$ 1.56
Weighted Average Common Shares Outstanding
Basic (in shares)	45,213	40,078	45,109	39,928
Diluted (in shares)	46,158	40,610	45,988	40,469