CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents		$ 521	$ 448
Accounts receivable, less allowance for doubtful accounts of $2,961 and $2,719		115,006	188,941
Derivative assets		237,167	363,049
Inventory and other		20,914	17,854
Total current assets		373,608	570,292
Derivative assets		31,654	40,314
Natural gas and oil properties, successful efforts method	[1]	10,966,160	10,567,971
Accumulated depletion and depreciation	[1]	(2,725,802)	(2,590,398)
Natural gas and oil properties, successful efforts method, net	[1]	8,240,358	7,977,573
Other property and equipment		128,198	127,808
Accumulated depreciation and amortization		(95,584)	(90,227)
Other Property and equipment, net		32,614	37,581
Other assets		127,697	121,020
Total assets		8,805,931	8,746,780
Current liabilities:
Accounts payable		206,748	396,942
Asset retirement obligations		17,689	15,067
Accrued liabilities		162,724	187,973
Accrued interest		45,650	39,695
Deferred tax liabilities		73,941	115,587
Total current liabilities		506,752	755,264
Bank debt		364,000	723,000
Senior notes		750,000	0
Subordinated notes		2,350,000	2,350,000
Deferred tax liabilities		999,532	997,494
Derivative liabilities		125
Deferred compensation liabilities		156,460	178,599
Asset retirement obligations and other liabilities		297,648	284,994
Total liabilities		$ 5,424,517	$ 5,289,351
Commitments and contingencies
Stockholders’ Equity
Preferred stock, $1 par, 10,000,000 shares authorized, none issued and outstanding		$ 0	$ 0
Common stock, $0.01 par, 475,000,000 shares authorized, 169,356,015 issued at June 30, 2015 and 168,711,131 issued at December 31, 2014		1,693	1,687
Common stock held in treasury, 62,511 shares at June 30, 2015 and 82,954 shares at December 31, 2014		(2,358)	(3,088)
Additional paid-in capital		2,428,168	2,400,475
Retained earnings		953,911	1,058,355
Total stockholders’ equity		3,381,414	3,457,429
Total liabilities and stockholders’ equity		$ 8,805,931	$ 8,746,780

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