CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 468	$ 348
Accounts receivable, less allowance for doubtful accounts of $2,704 and $2,494	172,429	179,667
Derivative assets	44,774	4,421
Deferred tax asset	2,010	51,414
Inventory and other	16,961	12,451
Total current assets	236,642	248,301
Derivative assets	17,034	9,233
Equity method investments		129,034
Natural gas and oil properties, successful efforts method	10,102,115	9,032,881
Accumulated depletion and depreciation	(2,472,030)	(2,274,444)
Natural gas and oil properties, successful efforts method, net	7,630,085	6,758,437
Transportation and field assets	125,638	118,625
Accumulated depreciation and amortization	(87,083)	(85,841)
Transportation and field assets, net	38,555	32,784
Other assets	112,134	121,297
Total assets	8,034,450	7,299,086
Current liabilities:
Accounts payable	266,702	258,431
Asset retirement obligations	5,037	5,037
Accrued liabilities	171,345	161,520
Accrued interest	23,328	44,375
Derivative liabilities		26,198
Total current liabilities	466,412	495,561
Bank debt	649,000	500,000
Subordinated notes	2,350,000	2,640,516
Deferred tax liability	948,904	771,980
Derivative liabilities		25
Deferred compensation liability	197,277	247,537
Asset retirement obligations and other liabilities	253,940	229,015
Total liabilities	4,865,533	4,884,634
Commitments and contingencies
Stockholders’ Equity
Preferred stock, $1 par, 10,000,000 shares authorized, none issued and outstanding
Common stock, $0.01 par, 475,000,000 shares authorized, 168,700,022 issued at September 30, 2014 and 163,441,414 issued at December 31, 2013	1,687	1,634
Common stock held in treasury, 82,954 shares at September 30, 2014 and 98,520 shares at December 31, 2013	(3,088)	(3,637)
Additional paid-in capital	2,389,491	1,959,636
Retained earnings	781,049	450,583
Accumulated other comprehensive (loss) income	(222)	6,236
Total stockholders’ equity	3,168,917	2,414,452
Total liabilities and stockholders’ equity	$ 8,034,450	$ 7,299,086