Quarterly report pursuant to Section 13 or 15(d)

Supplemental Guarantor Information (Condensed Consolidating Statement of Cash Flows) (Detail)

v2.4.0.6
Supplemental Guarantor Information (Condensed Consolidating Statement of Cash Flows) (Detail) (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 (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:    
Acquisition of significant property interest 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 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 provided by financing activities (49,022) 233,165
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
Parent Company
    
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 131,082 114,627
Amortization of debt issuance costs 1,287 815
Loss on extinguishment of debt   20,663
Share-based compensation 5,818 3,662
Derivative gain (10,238) 6,508
Cash payments on derivative settlements (6,084) (8,322)
Deferred income taxes 46,010 42,154
Earnings of affiliates (37,844) (40,770)
Changes in operating assets and liabilities:    
Oil and natural gas receivables 22,750 (18,779)
Joint interest and other receivables 3,630 14,107
Insurance receivables 500 12,583
Income taxes (40,351) (43,339)
Prepaid expenses and other assets (14,110) (24,650)
Asset retirement obligations (29,228) (29,703)
Accounts payable and accrued liabilities 7,205 (4,665)
Other liabilities 72,334 108,758
Net cash provided by operating activities 209,546 227,473
Investing activities:    
Acquisition of significant property interest in oil and natural gas properties   (396,976)
Investment in oil and natural gas properties and equipment (155,505) (83,429)
Proceeds from sales of oil and 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 (156,483) (480,583)
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 provided by financing activities (49,022) 233,165
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
Guarantor Subsidiaries
    
Operating activities:    
Net income 37,844 40,770
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, depletion, amortization and accretion 43,350 42,835
Deferred income taxes 2,110 (6,428)
Changes in operating assets and liabilities:    
Oil and natural gas receivables 3,371 7,173
Income taxes 18,289 28,382
Prepaid expenses and other assets (71,419) (108,643)
Accounts payable and accrued liabilities (1,766) (1,717)
Net cash provided by operating activities 31,779 2,372
Investing activities:    
Investment in oil and natural gas properties and equipment (31,779) (2,372)
Net cash used in investing activities (31,779) (2,372)
Eliminations
    
Operating activities:    
Net income (37,844) (40,770)
Adjustments to reconcile net income to net cash provided by operating activities:    
Earnings of affiliates 37,844 40,770
Changes in operating assets and liabilities:    
Prepaid expenses and other assets 71,419 108,643
Other liabilities $ (71,419) $ (108,643)