CONSOLIDATED STATEMENTS OF OPERATIONS (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 and other income:
Natural gas, NGLs and oil sales	$ 446,067	$ 431,214	$ 1,495,601	$ 1,267,131
Derivative fair value income (loss)	142,057	(40,355)	(28,902)	(2,470)
Gain on the sale of assets	167	6,008	281,878	89,129
Brokered natural gas, marketing and other	28,324	45,171	90,904	80,843
Total revenues and other income	616,615	442,038	1,839,481	1,434,633
Costs and expenses:
Direct operating	37,792	30,907	112,522	93,731
Transportation, gathering and compression	84,777	60,958	235,747	189,422
Production and ad valorem taxes	10,110	11,454	32,632	33,950
Brokered natural gas and marketing	28,706	51,117	97,610	90,094
Exploration	11,443	20,496	39,910	50,344
Abandonment and impairment of unproved properties	13,444	11,692	32,771	46,066
General and administrative	54,963	44,919	161,063	230,964
Deferred compensation plan	(46,198)	(2,225)	(37,714)	33,257
Interest expense	39,188	44,321	130,077	131,602
Loss on early extinguishment of debt			24,596	12,280
Depletion, depreciation and amortization	142,450	130,343	404,493	365,439
Impairment of proved properties and other assets		7,012	24,991	7,753
Total costs and expenses	376,675	410,994	1,258,698	1,284,902
Income from operations before income taxes	239,940	31,044	580,783	149,731
Income tax expense
Current			5
Deferred	93,522	11,866	230,450	62,180
Total income tax expense	93,522	11,866	230,455	62,180
Net income	$ 146,418	$ 19,178	$ 350,328	$ 87,551
Net income per common share:
Basic	$ 0.87	$ 0.12	$ 2.11	$ 0.54
Diluted	$ 0.86	$ 0.12	$ 2.10	$ 0.53
Dividends paid per common share	$ 0.04	$ 0.04	$ 0.12	$ 0.12
Weighted average common shares outstanding:
Basic	165,841	160,500	162,866	160,398
Diluted	166,460	161,374	163,685	161,321