CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents		$ 382	$ 471
Accounts receivable, less allowance for doubtful accounts of $4,722 and $4,994		81,418	123,842
Derivative assets		43,250	281,544
Inventory and other		20,662	33,217
Total current assets		145,712	439,074
Derivative assets		813	7,218
Natural gas and oil properties, successful efforts method	[1]	9,005,011	8,996,336
Accumulated depletion and depreciation	[1]	(2,864,358)	(2,635,031)
Natural gas and oil properties, successful efforts method, net	[1]	6,140,653	6,361,305
Other property and equipment		111,095	110,013
Accumulated depreciation and amortization		(94,606)	(90,558)
Other Property and equipment, net		16,489	19,455
Other assets		76,512	72,979
Total assets		6,380,179	6,900,031
Current liabilities:
Accounts payable		92,081	117,346
Asset retirement obligations		15,071	15,071
Accrued liabilities		179,812	188,028
Accrued interest		32,000	30,139
Derivative liabilities		20,649	1,136
Total current liabilities		339,613	351,720
Bank debt			86,427
Senior notes		738,616	738,101
Senior subordinated notes		1,828,345	1,826,775
Deferred tax liabilities		606,482	777,947
Derivative liabilities		19,243	21
Deferred compensation liabilities		127,090	104,792
Asset retirement obligations and other liabilities		255,863	254,590
Total liabilities		3,915,252	4,140,373
Commitments and contingencies			0
Stockholders’ Equity
Preferred stock, $1 par, 10,000,000 shares authorized, none issued and outstanding			0
Common stock, $0.01 par, 475,000,000 shares authorized, 170,081,406 issued at June 30, 2016 and 169,375,743 issued at December 31, 2015		1,701	1,693
Common stock held in treasury, 45,511 shares at June 30, 2016 and 59,283 shares at December 31, 2015		(1,733)	(2,245)
Additional paid-in capital		2,470,814	2,442,623
Retained earnings (deficit)		(5,855)	317,587
Total stockholders’ equity		2,464,927	2,759,658
Total liabilities and stockholders’ equity		$ 6,380,179	$ 6,900,031

[1] Includes capitalized asset retirement costs and the associated accumulated amortization.