CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents		$ 529	$ 471
Accounts receivable, less allowance for doubtful accounts of $4,477 and $4,994		104,894	123,842
Derivative assets		261,079	281,544
Inventory and other		25,224	33,217
Total current assets		391,726	439,074
Derivative assets		5,430	7,218
Natural gas and oil properties, successful efforts method	[1]	8,965,379	8,996,336
Accumulated depletion and depreciation	[1]	(2,748,635)	(2,635,031)
Natural gas and oil properties, successful efforts method, net	[1]	6,216,744	6,361,305
Other property and equipment		110,444	110,013
Accumulated depreciation and amortization		(92,572)	(90,558)
Other Property and equipment, net		17,872	19,455
Other assets		73,378	72,979
Total assets		6,705,150	6,900,031
Current liabilities:
Accounts payable		133,853	117,346
Asset retirement obligations		15,071	15,071
Accrued liabilities		160,165	188,028
Accrued interest		28,953	30,139
Derivative liabilities		192	1,136
Total current liabilities		338,234	351,720
Bank debt		23,149	86,427
Senior notes		738,362	738,101
Senior subordinated notes		1,827,554	1,826,775
Deferred tax liabilities		735,971	777,947
Derivative liabilities		1,270	21
Deferred compensation liabilities		115,152	104,792
Asset retirement obligations and other liabilities		254,114	254,590
Total liabilities		$ 4,033,806	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, 169,746,218 issued at March 31, 2016 and 169,375,743 issued at December 31, 2015		$ 1,698	1,693
Common stock held in treasury, 49,563 shares at March 31, 2016 and 59,283 shares at December 31, 2015		(1,871)	(2,245)
Additional paid-in capital		2,449,035	2,442,623
Retained earnings		222,482	317,587
Total stockholders’ equity		2,671,344	2,759,658
Total liabilities and stockholders’ equity		$ 6,705,150	$ 6,900,031

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