Annual report pursuant to Section 13 and 15(d)

Consolidated Statements Of Cash Flows

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Consolidated Statements Of Cash Flows (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Operating activities:      
Net income $ 71,984 $ 172,817 $ 117,892
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation, depletion, amortization and accretion 356,232 328,786 294,100
Amortization of debt issuance costs and premium 2,575 2,010 1,338
Loss on extinguishment of debt    22,694   
Share-based compensation 12,398 9,710 5,533
Derivative (gain) loss 13,954 (1,896) 4,256
Cash payments on derivative settlements (7,664) (9,873) 874
Deferred income taxes 88,109 61,835 (8,266)
Changes in operating assets and liabilities:      
Oil and natural gas receivables 818 (18,639) (24,933)
Joint interest and other receivables (31,399) 375 25,897
Insurance receivables 2,576 20,771 54,873
Income taxes (58,011) (7,124) 104,067
Prepaid expenses and other assets 7,440 (7,809) 4,536
Asset retirement obligations (112,827) (59,958) (87,166)
Accounts payable and accrued liabilities 38,026 7,881 (31,885)
Other liabilities 926 (102) 3,656
Net cash provided by operating activities 385,137 521,478 464,772
Investing activities:      
Acquisition of property interest in oil and natural gas properties (205,550) (437,247) (236,944)
Investment in oil and natural gas properties and equipment (479,313) (281,779) (178,709)
Proceeds from sales of oil and natural gas properties and equipment 30,453 15 1,420
Purchases of furniture, fixtures and other, net (3,031) (3,660) (760)
Net cash used in investing activities (657,441) (722,671) (414,993)
Financing activities:      
Issuance of 8.50% Senior Notes 318,000 600,000   
Repurchase of 8.25% Senior Notes    (450,000)   
Borrowings of long-term debt - revolving bank credit facility 732,000 623,000 627,500
Repayments of long-term debt - revolving bank credit facility (679,000) (506,000) (627,500)
Repurchase premium and debt issuance costs (8,510) (32,288)   
Dividends to shareholders (82,832) (58,756) (59,609)
Other 379 1,094 298
Net cash provided by (used in) financing activities 280,037 177,050 (59,311)
Increase (decrease) in cash and cash equivalents 7,733 (24,143) (9,532)
Cash and cash equivalents, beginning of period 4,512 28,655 38,187
Cash and cash equivalents, end of period $ 12,245 $ 4,512 $ 28,655