Consolidated Statement of Operations (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues:
Natural gas sales	$ 969,850	$ 824,266	$ 695,733
Oil sales	260,170	109,138	114,241
Total operating revenues	1,230,020	933,404	809,974
Expenses:
Lease operating expenses	96,496	68,106	63,823
Liquids gathering system operating lease expense	20,306	20,000	645
Production taxes	103,898	72,398	60,757
Gathering fees	59,931	52,074	59,004
Transportation charges	77,780	82,797	84,470
Depletion and depreciation	292,951	243,390	388,985
Ceiling test and other impairments	0	0	2,972,464
General and Administrative Expense	19,069	22,373	25,104
Total operating expenses	670,431	561,138	3,655,252
Operating income (loss)	559,589	372,266	(2,845,278)
Other income (expense), net:
Interest expense	(126,157)	(101,486)	(88,180)
Gain (loss) on commodity derivatives	82,402	(46,754)	73,581
Deferred gain on sale of liquids gathering system	10,553	10,553	0
Contract Cancellation Fees	0	0	(15,469)
Gain on sale of property	8,022	0	0
Other income (expense) net	2,618	(357)	(1,765)
Total other income (expense), net	(22,562)	(138,044)	(31,833)
Income (loss) before income tax (benefit)	537,027	234,222	(2,877,111)
Income tax (benefit)	(5,824)	(3,616)	(700,213)
Net income (loss)	$ 542,851	$ 237,838	$ (2,176,898)
Basic Earnings (Loss) per Share:
Earnings Per Share, Basic	$ 3.54	$ 1.55	$ (14.24)
Fully Diluted Earnings (Loss) per Share:
Earnings Per Share, Diluted	$ 3.51	$ 1.54	$ (14.24)
Weighted average common shares outstanding - basic	153,136,000	152,963,000	152,845,000
Weighted average common shares outstanding - fully diluted	154,694,000	154,426,000	152,845,000