CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenues and other income:
Natural gas, NGLs and oil sales	$ 572,017	$ 398,239
Derivative fair value loss	(146,850)	(99,875)
Loss on the sale of assets	(353)	(166)
Brokered natural gas, marketing and other	32,528	21,041
Total revenues and other income	457,342	319,239
Costs and expenses:
Direct operating	39,795	30,188
Transportation, gathering and compression	74,161	62,416
Production and ad valorem taxes	11,678	11,383
Brokered natural gas and marketing	34,129	22,315
Exploration	14,846	16,780
Abandonment and impairment of unproved properties	9,995	15,218
General and administrative	49,212	84,058
Deferred compensation plan	(2,035)	42,360
Interest expense	45,401	42,210
Depletion, depreciation and amortization	128,682	115,101
Total costs and expenses	405,864	442,029
Income (loss) from operations before income taxes	51,478	(122,790)
Income tax expense (benefit)
Current	6	25
Deferred	18,951	(47,205)
Total income tax expense (benefit)	18,957	(47,180)
Net income (loss)	$ 32,521	$ (75,610)
Net income (loss) per common share:
Basic	$ 0.20	$ (0.47)
Diluted	$ 0.20	$ (0.47)
Dividends paid per common share	$ 0.04	$ 0.04
Weighted average common shares outstanding:
Basic	160,794	160,125
Diluted	161,825	160,125