Consolidated Statements Of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Crude oil revenues	$ 130,362	$ 87,482
Natural gas liquids revenues	5,888	2,741
Natural gas revenues	20,962	21,678
Total revenues	157,212	111,901
Costs and Expenses
Lease operating	12,605	10,195
Production taxes	6,091	4,513
Ad valorem taxes	1,428	1,860
Depreciation, depletion and amortization	64,594	45,697
General and administrative	28,261	16,173
Loss on derivative instruments, net	20,680	14,554
Interest expense, net	12,425	14,976
Other (income) expense, net	574	(40)
Total Costs and Expenses	146,658	107,928
Income From Continuing Operations Before Income Taxes	10,554	3,973
Income tax expense	(3,933)	(1,449)
Income From Continuing Operations	6,621	2,524
Income (Loss) From Discontinued Operations, Net of Income Taxes	(645)	23,658
Net Income (loss)	$ 5,976	$ 26,182
Net Income (Loss) Per Common Share - Basic
Net income from continuing operations - basic (in dollars per share)	$ 0.15	$ 0.06
Net income from discontinued operations - basic (in dollars per share)	$ (0.02)	$ 0.60
Net income per share, basic (in dollars per share)	$ 0.13	$ 0.66
Net Income (Loss) Per Common Share - Diluted
Net income from continuing operations - diluted (in dollars per share)	$ 0.14	$ 0.06
Net income from discontinued operations - diluted (in dollars per share)	$ (0.01)	$ 0.59
Net income per share, diluted (in dollars per share)	$ 0.13	$ 0.65
Weighted Average Common Shares Outstanding
Basic (in shares)	45,003	39,778
Diluted (in shares)	45,834	40,333