Condensed Statements of Operations (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 Successor	Mar. 31, 2013 Predecessor
Revenues and other
Oil, natural gas and natural gas liquids sales	$ 333,116	$ 266,772
Electricity sales	9,969	7,589
Gains (losses) on oil and natural gas derivatives	3,465	(737)
Marketing revenues	4,846	2,027
Other revenues	(16)	472
Total revenues	351,380	276,123
Expenses
Lease operating expenses	90,031	75,268
Electricity generation expenses	8,383	5,296
Transportation expenses	7,993	7,694
Marketing expenses	2,598	1,878
General and administrative expenses	43,491	22,226
Exploration costs	0	3,429
Depreciation, depletion and amortization	68,631	68,478
Taxes, other than income taxes	23,029	13,970
Losses (gains) on sale of assets and other, net	3,367	(23)
Total expenses	247,523	198,216
Other income and (expenses)
Interest expense, net of amounts capitalized	(24,001)	(24,687)
Other, net	(189)	(49)
Total other income (expenses)	(24,190)	(24,736)
Income before income taxes	79,667	53,171
Income tax expense (benefit)	(31)	20,737
Net income	$ 79,698	$ 32,434