Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Operating activities:    
Net income $ 56,785 $ 73,824
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, depletion, amortization and accretion 174,432 157,462
Amortization of debt issuance costs 1,287 815
Loss on extinguishment of debt   20,663
Share-based compensation 5,818 3,662
Derivative (gain) loss (10,238) 6,508
Cash payments on derivative settlements (6,084) (8,322)
Deferred income taxes 48,120 35,726
Changes in operating assets and liabilities:    
Oil and natural gas receivables 26,121 (11,606)
Joint interest and other receivables 3,630 14,107
Insurance receivables 500 12,583
Income taxes (22,062) (14,957)
Prepaid expenses and other assets (14,110) (24,650)
Asset retirement obligations (29,228) (29,703)
Accounts payable and accrued liabilities 5,439 (6,382)
Other liabilities 915 115
Net cash provided by operating activities 241,325 229,845
Investing activities:    
Acquisitions of property interests in oil and natural gas properties   (396,976)
Investment in oil and natural gas properties and equipment (187,284) (85,801)
Proceeds from sales of oil and natural gas properties and equipment 30,453  
Change in restricted cash (30,763)  
Purchases of furniture, fixtures and other (668) (178)
Net cash used in investing activities (188,262) (482,955)
Financing activities:    
Issuance of 8.5% Senior Notes   600,000
Repurchase of 8.25% Senior Notes   (406,150)
Borrowings of long-term debt - revolving bank credit facility 197,000 310,000
Repayments of long-term debt - revolving bank credit facility (234,000) (235,000)
Repurchase premium and debt issuance costs   (29,728)
Dividends to shareholders (11,898) (5,957)
Other (124)  
Net cash (used in) provided by financing activities (49,022) 233,165
Increase (decrease) in cash and cash equivalents 4,041 (19,945)
Cash and cash equivalents, beginning of period 4,512 28,655
Cash and cash equivalents, end of period $ 8,553 $ 8,710