Annual report pursuant to Section 13 and 15(d)

Supplemental Guarantor Information (Condensed Consolidating Statement Of Cash Flows) (Details)

v2.4.0.6
Supplemental Guarantor Information (Condensed Consolidating Statement Of Cash Flows) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Net income (loss) $ 172,817 $ 117,892 $ (187,919)
Depreciation, depletion, amortization and accretion 328,786 294,100 345,637
Amortization of debt issuance costs 2,010 1,338 1,838
Loss on extinguishment of debt 22,694    2,817
Share-based compensation 9,710 5,533 6,380
Derivative (gain) loss (1,896) 4,256 7,372
Cash payments on derivative settlements (9,873) 874 (6,679)
Deferred income taxes 61,835 (8,266) (346)
Earnings of affiliates       
Oil and natural gas receivables (18,639) (24,933) (18,509)
Joint interest and other receivables 375 25,897 31,866
Insurance receivables 20,771 54,873 23,235
Income taxes (7,124) 104,067 (52,100)
Prepaid expenses and other assets (7,809) 4,536 (749)
Asset retirement obligations (59,958) (87,166) (99,069)
Accounts payable and accrued liabilities 7,881 (31,885) (117,230)
Other liabilities (102) 3,656 (147)
Net cash provided by operating activities 521,478 464,772 156,266
Acquisition of property interest in oil and natural gas properties (437,247) (236,944) (2,421)
Investment in oil and natural gas properties and equipment (281,779) (178,709) (273,713)
Proceeds from sales of oil and natural gas properties and equipment 15 1,420 32,226
Investment in subsidiary       
Purchases of furniture, fixtures, misc. sales and other (3,645) (760)  
Net cash used in investing activities (722,671) (414,993) (237,697)
Issuance of 8.5% Senior Notes 600,000     
Repurchase of 8.25% Senior Notes (450,000)     
Borrowings of long-term debt - revolving bank credit facility 623,000 627,500 205,441
Repayments of long-term debt - revolving bank credit facility (506,000) (627,500) (410,941)
Repurchase premium and debt issuance costs (32,288)     
Dividends to shareholders (58,756) (59,609) (9,158)
Other 1,094 298 891
Investment from parent       
Net cash provided by (used in) financing activities 177,050 (59,311) (237,934)
Decrease in cash and cash equivalents (24,143) (9,532) (319,365)
Cash and cash equivalents, beginning of period 28,655 38,187 357,552
Cash and cash equivalents, end of period 4,512 28,655 38,187
Parent Company [Member]
     
Net income (loss) 172,817 117,892  
Depreciation, depletion, amortization and accretion 241,687 266,227  
Amortization of debt issuance costs 2,010 1,338  
Loss on extinguishment of debt 22,694    
Share-based compensation 9,710 5,533  
Derivative (gain) loss (1,896) 4,256  
Cash payments on derivative settlements (9,873) 874  
Deferred income taxes 76,717 (5,511)  
Earnings of affiliates (92,533) (32,110)  
Oil and natural gas receivables (27,709) 4,556  
Joint interest and other receivables 375 25,897  
Insurance receivables 20,771 54,873  
Income taxes (71,655) 84,023  
Prepaid expenses and other assets (8,003) 4,536  
Asset retirement obligations (59,958) (87,166)  
Accounts payable and accrued liabilities 8,589 (35,278)  
Other liabilities 227,918 50,816  
Net cash provided by operating activities 511,661 460,756  
Acquisition of property interest in oil and natural gas properties (437,247)    
Investment in oil and natural gas properties and equipment (277,147) (174,693)  
Proceeds from sales of oil and natural gas properties and equipment   1,420  
Investment in subsidiary 5,185 (236,944)  
Purchases of furniture, fixtures, misc. sales and other (3,645) (760)  
Net cash used in investing activities (712,854) (410,977)  
Issuance of 8.5% Senior Notes 600,000    
Repurchase of 8.25% Senior Notes (450,000)    
Borrowings of long-term debt - revolving bank credit facility 623,000 627,500  
Repayments of long-term debt - revolving bank credit facility (506,000) (627,500)  
Repurchase premium and debt issuance costs (32,288)    
Dividends to shareholders (58,756) (59,609)  
Other 1,094 298  
Investment from parent       
Net cash provided by (used in) financing activities 177,050 (59,311)  
Decrease in cash and cash equivalents (24,143) (9,532)  
Cash and cash equivalents, beginning of period 28,655 38,187  
Cash and cash equivalents, end of period 4,512 28,655  
Guarantor Subsidiaries [Member]
     
Net income (loss) 92,533 32,110 [1]  
Depreciation, depletion, amortization and accretion 87,099 27,873 [1]  
Amortization of debt issuance costs      [1]  
Share-based compensation      [1]  
Derivative (gain) loss       [1]  
Cash payments on derivative settlements      [1]  
Deferred income taxes (14,882) (2,755) [1]  
Earnings of affiliates       [1]  
Oil and natural gas receivables 9,070 (29,489) [1]  
Joint interest and other receivables      [1]  
Insurance receivables      [1]  
Income taxes 64,531 20,044 [1]  
Prepaid expenses and other assets (228,020) (47,160) [1]  
Asset retirement obligations      [1]  
Accounts payable and accrued liabilities (514) 3,393 [1]  
Other liabilities      [1]  
Net cash provided by operating activities 9,817 4,016 [1]  
Acquisition of property interest in oil and natural gas properties   (236,944) [1]  
Investment in oil and natural gas properties and equipment (4,632) (4,016) [1]  
Proceeds from sales of oil and natural gas properties and equipment      [1]  
Investment in subsidiary       [1]  
Purchases of furniture, fixtures, misc. sales and other      [1]  
Net cash used in investing activities (4,632) (240,960) [1]  
Borrowings of long-term debt - revolving bank credit facility      [1]  
Repayments of long-term debt - revolving bank credit facility      [1]  
Dividends to shareholders      [1]  
Other      [1]  
Investment from parent (5,185) 236,944 [1]  
Net cash provided by (used in) financing activities (5,185) 236,944 [1]  
Decrease in cash and cash equivalents      [1]  
Cash and cash equivalents, beginning of period    [1]    [1]  
Cash and cash equivalents, end of period      [1]  
Eliminations [Member]
     
Net income (loss) (92,533) (32,110)  
Derivative (gain) loss       
Earnings of affiliates 92,533 32,110  
Prepaid expenses and other assets 228,214 47,160  
Accounts payable and accrued liabilities (194)    
Other liabilities (228,020) (47,160)  
Investment in subsidiary (5,185) 236,944  
Net cash used in investing activities (5,185) 236,944  
Investment from parent 5,185 (236,944)  
Net cash provided by (used in) financing activities $ 5,185 $ (236,944)  
[1] Began operations on May 1, 2010.