CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents		$ 357	$ 448
Accounts receivable, less allowance for doubtful accounts of $5,862 and $7,111		397,536	348,833
Derivative assets		103	58,607
Inventory and other		24,488	21,346
Total current assets		422,484	429,234
Derivative assets		1,114	273
Goodwill		1,641,197	1,641,197
Natural gas and oil properties, successful efforts method	[1]	13,643,196	13,216,453
Accumulated depletion and depreciation	[1]	(3,929,060)	(3,649,716)
Natural gas and oil properties, successful efforts method, net	[1]	9,714,136	9,566,737
Other property and equipment		112,404	114,361
Accumulated depreciation and amortization		(101,402)	(99,695)
Other Property and equipment, net		11,002	14,666
Other assets		76,203	76,734
Total assets		11,866,136	11,728,841
Current liabilities:
Accounts payable		225,874	343,871
Asset retirement obligations		6,327	6,327
Accrued liabilities		386,671	317,531
Accrued interest		37,739	43,511
Derivative liabilities		97,256	44,233
Total current liabilities		753,867	755,473
Bank debt		1,257,199	1,208,467
Senior notes		2,855,048	2,851,754
Senior subordinated notes		48,653	48,585
Deferred tax liabilities		731,723	693,356
Derivative liabilities		11,751	9,789
Deferred compensation liabilities		86,794	101,102
Asset retirement obligations and other liabilities		303,813	286,043
Total liabilities		6,048,848	5,954,569
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, 249,504,124 issued at September 30, 2018 and 248,144,397 issued at December 31, 2017		2,495	2,481
Common stock held in treasury, 10,067 shares at September 30, 2018 and 14,967 shares at December 31, 2017		(404)	(599)
Additional paid-in capital		5,617,371	5,577,732
Accumulated other comprehensive loss		(1,124)	(1,332)
Retained earnings		198,950	195,990
Total stockholders’ equity		5,817,288	5,774,272
Total liabilities and stockholders’ equity		$ 11,866,136	$ 11,728,841

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