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CONDENSED CONSOLIDATED BALANCE SHEET (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Current assets    
Cash and cash equivalents $ 25,431 $ 23,400
Restricted cash 19,713 28,094
Accounts receivable, net 245,073 222,476
Inventories 10,392 17,468
Deferred income taxes 71,806 81,855
Other current assets 1,415 5,606
Total current assets 373,830 378,899
Properties and equipment, net (Successful efforts method) 4,710,569 4,546,227
Other assets 61,376 55,954
TOTAL ASSETS 5,145,775 4,981,080
Current liabilities    
Accounts payable 297,685 288,801
Accrued liabilities 47,203 73,601
Derivative instruments 73,428 13,912
Income taxes payable 14,312 31,591
Total current liabilities 432,628 407,905
Postretirement benefits 34,373 33,554
Long-term debt 1,222,000 1,147,000
Deferred income taxes 1,074,497 1,067,912
Asset retirement obligation 75,604 73,853
Other liabilities 37,882 46,254
Total liabilities 2,876,984 2,776,478
Commitments and contingencies      
Stockholders' equity    
Common stock: Authorized -- 480,000,000 shares of $0.10 par value in 2014 and 2013, respectively Issued--422,906,452 shares and 422,014,681 shares in 2014 and 2013, respectively 42,291 42,201
Additional paid-in capital 713,950 710,940
Retained earnings 1,726,504 1,627,805
Accumulated other comprehensive income / (loss) (45,971) (8,361)
Less treasury stock, at cost: 5,618,166 shares in 2014 and 2013, respectively (167,983) (167,983)
Total stockholders' equity 2,268,791 2,204,602
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY $ 5,145,775 $ 4,981,080