CONDENSED CONSOLIDATED BALANCE SHEET (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets
Cash and cash equivalents	$ 309,987	$ 23,400
Restricted cash	0	28,094
Accounts receivable, net	191,270	222,476
Inventories	13,731	17,468
Deferred income taxes	53,725	81,855
Other current assets	19,233	5,606
Total current assets	587,946	378,899
Properties and equipment, net (Successful efforts method)	5,130,213	4,546,227
Equity method investments	57,495	26,892
Other assets	31,610	29,062
TOTAL ASSETS	5,807,264	4,981,080
Current liabilities
Accounts payable	379,787	288,801
Accrued liabilities	44,843	87,513
Income taxes payable	8,161	31,591
Total current liabilities	432,791	407,905
Postretirement benefits	35,936	33,554
Long-term debt	1,612,000	1,147,000
Deferred income taxes	1,208,036	1,067,912
Asset retirement obligation	114,241	73,853
Other liabilities	37,789	46,254
Total liabilities	3,440,793	2,776,478
Commitments and contingencies
Stockholders’ equity
Common stock: Authorized -- 960,000,000 and 480,000,000 shares of $0.10 par value in 2014 and 2013, respectively Issued--422,912,560 and 422,014,681 shares in 2014 and 2013, respectively	42,291	42,201
Additional paid-in capital	713,087	710,940
Retained earnings	1,929,026	1,627,805
Accumulated other comprehensive income (loss)	(19,199)	(8,361)
Less treasury stock, at cost: 9,638,980 and 5,618,166 shares in 2014 and 2013, respectively	(298,734)	(167,983)
Total stockholders’ equity	2,366,471	2,204,602
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 5,807,264	$ 4,981,080