CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents		$ 464	$ 458
Accounts receivable, less allowance for doubtful accounts of $393 and $3,004		299,590	252,642
Derivative assets		25,865	23,332
Other current assets		13,793	13,408
Total current assets		339,712	289,840
Derivative assets		21,483	16,680
Natural gas properties, successful efforts method	[1]	9,973,112	9,751,114
Accumulated depletion and depreciation	[1]	(4,239,713)	(4,064,305)
Natural gas and oil properties, successful efforts method, net	[1]	5,733,399	5,686,809
Other property and equipment		80,503	79,878
Accumulated depreciation and amortization		(76,677)	(75,717)
Other Property and equipment, net		3,826	4,161
Operating lease right-of-use assets		52,291	63,581
Other assets		78,722	75,865
Total assets		6,229,433	6,136,936
Current liabilities:
Accounts payable		144,454	132,421
Asset retirement obligations		6,689	6,689
Accrued liabilities		358,640	348,333
Accrued interest		76,909	54,742
Derivative liabilities		249,277	26,707
Divestiture contract obligation		89,950	92,593
Current maturities of long-term debt		0	45,356
Total current liabilities		925,919	706,841
Bank debt		114,025	693,123
Senior notes		2,922,632	2,329,745
Senior subordinated notes		0	17,384
Deferred tax liabilities		134,000	135,267
Derivative liabilities		22,367	9,746
Deferred compensation liabilities		121,010	81,481
Operating lease liabilities		32,770	43,155
Asset retirement obligations and other liabilities		87,336	91,157
Divestiture contract obligation		346,113	391,502
Total liabilities		4,706,172	4,499,401
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, 259,595,233 issued at March 31, 2021 and 256,353,887 issued at December 31, 2020		2,598	2,563
Common stock held in treasury, 10,004,683 shares at June 30, 2021 and 10,005,795 shares at December 31, 2020		(30,085)	(30,132)
Additional paid-in capital		5,699,240	5,684,268
Accumulated other comprehensive loss		(338)	(479)
Retained deficit		(4,148,154)	(4,018,685)
Total stockholders’ equity		1,523,261	1,637,535
Total liabilities and stockholders’ equity		$ 6,229,433	$ 6,136,936

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