Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues
Oil, natural gas liquids and natural gas sales	$ 350,773	$ 360,507	$ 1,057,447	$ 927,746
Gain (loss) on derivative instruments, net	147,735	(88,192)	9,498	(51,904)
Loss on sale of assets and other	(747)	(277)	(1,809)	(492)
Total revenues	497,761	272,038	1,065,136	875,350
Operating Costs and Expenses
Oil, natural gas liquids and natural gas production	67,720	65,795	199,861	190,944
Production and ad valorem taxes	25,729	22,230	81,102	69,109
Depreciation, depletion and amortization	139,104	124,911	399,568	332,247
Asset impairment	179,074	0	179,074	0
Exploration	8,255	8,949	23,644	13,902
General and administrative	27,784	30,947	93,499	86,699
Accretion of discount on asset retirement obligations	1,924	1,771	5,650	5,187
Total costs and expenses	449,590	254,603	982,398	698,088
Operating Income	48,171	17,435	82,738	177,262
Other Income (Expense)
Interest expense	(11,522)	(10,149)	(27,374)	(30,232)
Other income	37	1,249	1,047	2,619
Total other expense	(11,485)	(8,900)	(26,327)	(27,613)
Income From Continuing Operations Before Income Taxes	36,686	8,535	56,411	149,649
Income tax expense	16,055	3,128	23,287	53,401
Income From Continuing Operations	20,631	5,407	33,124	96,248
Discontinued Operations, net of tax
Income (loss) from discontinued operations	(3,485)	(9,027)	30,435	39,891
Gain (loss) on disposal of discontinued operations	440,105	(15,678)	439,055	(15,678)
Income (Loss) From Discontinued Operations	436,620	(24,705)	469,490	24,213
Net Income (Loss)	$ 457,251	$ (19,298)	$ 502,614	$ 120,461
Diluted Earnings Per Average Common Share
Continuing operations (in dollars per share)	$ 0.28	$ 0.07	$ 0.45	$ 1.33
Discontinued operations (in dollars per share)	$ 5.94	$ (0.34)	$ 6.41	$ 0.34
Net Income (Loss) (in dollars per share)	$ 6.22	$ (0.27)	$ 6.86	$ 1.67
Basic Earnings Per Average Common Share
Continuing Operations (in dollars per share)	$ 0.28	$ 0.07	$ 0.45	$ 1.33
Discontinued operations (in dollars per share)	$ 5.98	$ (0.34)	$ 6.45	$ 0.34
Net Income (Loss) (in dollars per share)	$ 6.26	$ (0.27)	$ 6.90	$ 1.67
Dividends Per Common (In dollar per shares)	$ 0.15	$ 0.145	$ 0.45	$ 0.435
Diluted Shares Outstanding (in shares)	73,507	72,346	73,238	72,272
Basic Shares Outstanding (in shares)	73,093	72,346	72,861	72,220