Consolidated statements of operations (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
Revenues:
Oil and natural gas sales	$ 182,872	$ 177,048	$ 356,086	$ 340,673
Midstream service revenue	172	248	268	328
Total revenues	183,044	177,296	356,354	341,001
Costs and expenses:
Lease operating expenses	20,179	22,185	41,964	44,627
Production and ad valorem taxes	13,160	9,722	25,610	21,167
Midstream service expense	1,526	697	2,371	1,479
Natural gas volume commitment - affiliates	588	139	1,104	139
General and administrative	29,552	20,495	57,206	40,129
Accretion of asset retirement obligations	422	410	837	804
Depletion, depreciation and amortization	53,056	66,234	102,663	130,737
Total costs and expenses	118,483	119,882	231,755	239,082
Operating income	64,561	57,414	124,599	101,919
Non-operating income (expense):
Commodity derivatives, net	(63,125)	23,975	(94,237)	7,121
Interest rate derivatives, net	0	(9)	0	(15)
Loss from equity method investee	(41)	(49)	(25)	(113)
Interest expense	(30,657)	(25,943)	(59,643)	(51,292)
Interest and other income	194	12	277	27
Write-off of deferred loan costs	0	0	(124)	0
Loss on disposal of assets, net	(205)	(59)	(226)	(59)
Non-operating expense, net	(93,834)	(2,073)	(153,978)	(44,331)
Income (loss) from continuing operations before income taxes	(29,273)	55,341	(29,379)	57,588
Income tax benefit (expense):
Deferred	10,374	(20,047)	10,267	(21,157)
Total income tax benefit (expense)	10,374	(20,047)	10,267	(21,157)
Income (loss) from continuing operations	(18,899)	35,294	(19,112)	36,431
Income from discontinued operations, net of tax	0	518	0	790
Net income (loss)	$ (18,899)	$ 35,812	$ (19,112)	$ 37,221
Basic net income per share:
Income (loss) from continuing operations, per basic share	$ (0.13)	$ 0.28	$ (0.14)	$ 0.29
Income from discontinued operations, net of tax, per basic share	$ 0.00	$ 0.00	$ 0.00	$ 0.01
Net income (loss), basic (in dollars per share)	$ (0.13)	$ 0.28	$ (0.14)	$ 0.30
Diluted net income per share
Income (loss) from continuing operations, per diluted share	$ (0.13)	$ 0.27	$ (0.14)	$ 0.28
Income from discontinued operations, net of tax, per diluted share	$ 0.00	$ 0.00	$ 0.00	$ 0.01
Net income (loss), diluted (in dollars per share)	$ (0.13)	$ 0.27	$ (0.14)	$ 0.29
Weighted average common shares outstanding:
Basic (in shares)	141,298	127,362	141,183	127,281
Diluted (in shares)	141,298	129,384	141,183	129,119