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CONDENSED CONSOLIDATED BALANCE SHEET (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Current assets    
Cash and cash equivalents $ 45,610 $ 23,400
Restricted cash   28,094
Accounts receivable, net 212,100 222,476
Inventories 11,914 17,468
Deferred income taxes 32,947 81,855
Other current assets 3,525 5,606
Total current assets 306,096 378,899
Properties and equipment, net (Successful efforts method) 4,825,524 4,546,227
Equity method investments 49,854 26,892
Other assets 27,448 29,062
TOTAL ASSETS 5,208,922 4,981,080
Current liabilities    
Accounts payable 255,681 288,801
Accrued liabilities 59,734 73,601
Derivative instruments 38,493 13,912
Income taxes payable 8,239 31,591
Total current liabilities 362,147 407,905
Postretirement benefits 35,212 33,554
Long-term debt 1,193,000 1,147,000
Deferred income taxes 1,101,326 1,067,912
Asset retirement obligation 77,459 73,853
Other liabilities 37,839 46,254
Total liabilities 2,806,983 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--422,911,309 and 422,014,681 shares in 2014 and 2013, respectively 42,291 42,201
Additional paid-in capital 723,218 710,940
Retained earnings 1,836,577 1,627,805
Accumulated other comprehensive income (loss) (32,164) (8,361)
Less treasury stock, at cost: 5,618,166 shares in 2014 and 2013 (167,983) (167,983)
Total stockholders' equity 2,401,939 2,204,602
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY $ 5,208,922 $ 4,981,080