Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidating Statement of Cash Flows (Detail)

v2.4.0.6
Condensed Consolidating Statement of Cash Flows (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Operating activities:    
Net income $ 26,618 $ 3,218
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, depletion, amortization and accretion 108,872 88,491
Amortization of debt issuance costs 447 586
Share-based compensation 2,255 2,659
Derivative loss 3,368 39,634
Cash payments on derivative settlements (4,271) (5,800)
Deferred income taxes 12,507 2,550
Earnings of affiliates      
Changes in operating assets and liabilities:    
Oil and natural gas receivables 423 9,516
Joint interest and other receivables 25,875 (2,170)
Insurance receivables   715
Income taxes 2,372 (10,386)
Prepaid expenses and other assets 4,911 3,884
Asset retirement obligation settlements (23,464) (5,384)
Accounts payable, accrued liabilities and other 9,921 644
Net cash provided by operating activities 169,834 128,157
Investing activities:    
Investment in oil and natural gas properties and equipment (136,626) (84,626)
Purchases of furniture, fixtures and other (114) (500)
Net cash used in investing activities (136,740) (85,126)
Financing activities:    
Borrowings of long-term debt - revolving bank credit facility 112,000 84,000
Repayments of long-term debt - revolving bank credit facility (139,000) (117,000)
Dividends to shareholders (6,020) (5,948)
Other (42) (87)
Net cash used in financing activities (33,062) (39,035)
Increase in cash and cash equivalents 32 3,996
Cash and cash equivalents, beginning of period 12,245 4,512
Cash and cash equivalents, end of period 12,277 8,508
Parent Company
   
Operating activities:    
Net income 26,618 3,218
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, depletion, amortization and accretion 86,416 67,623
Amortization of debt issuance costs 447 586
Share-based compensation 2,255 2,659
Derivative loss 3,368 39,634
Cash payments on derivative settlements (4,271) (5,800)
Deferred income taxes 11,774 2,963
Earnings of affiliates (13,100) (18,516)
Changes in operating assets and liabilities:    
Oil and natural gas receivables 172 8,187
Joint interest and other receivables 25,875 (2,170)
Insurance receivables   715
Income taxes (3,957) (20,766)
Prepaid expenses and other assets 4,911 3,735
Asset retirement obligation settlements (23,311) (5,384)
Accounts payable, accrued liabilities and other 34,191 40,556
Net cash provided by operating activities 151,388 117,240
Investing activities:    
Investment in oil and natural gas properties and equipment (118,180) (73,709)
Purchases of furniture, fixtures and other (114) (500)
Net cash used in investing activities (118,294) (74,209)
Financing activities:    
Borrowings of long-term debt - revolving bank credit facility 112,000 84,000
Repayments of long-term debt - revolving bank credit facility (139,000) (117,000)
Dividends to shareholders (6,020) (5,948)
Other (42) (87)
Net cash used in financing activities (33,062) (39,035)
Increase in cash and cash equivalents 32 3,996
Cash and cash equivalents, beginning of period 12,245 4,512
Cash and cash equivalents, end of period 12,277 8,508
Guarantor Subsidiaries
   
Operating activities:    
Net income 13,100 18,516
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, depletion, amortization and accretion 22,456 20,868
Amortization of debt issuance costs      
Share-based compensation      
Derivative loss      
Cash payments on derivative settlements      
Deferred income taxes 733 (413)
Earnings of affiliates      
Changes in operating assets and liabilities:    
Oil and natural gas receivables 251 1,329
Joint interest and other receivables      
Insurance receivables     
Income taxes 6,329 10,380
Prepaid expenses and other assets (24,155) (37,855)
Asset retirement obligation settlements (153)   
Accounts payable, accrued liabilities and other (115) (1,908)
Net cash provided by operating activities 18,446 10,917
Investing activities:    
Investment in oil and natural gas properties and equipment (18,446) (10,917)
Purchases of furniture, fixtures and other      
Net cash used in investing activities (18,446) (10,917)
Financing activities:    
Borrowings of long-term debt - revolving bank credit facility      
Repayments of long-term debt - revolving bank credit facility      
Dividends to shareholders      
Other      
Net cash used in financing activities      
Increase in cash and cash equivalents      
Cash and cash equivalents, beginning of period      
Cash and cash equivalents, end of period      
Eliminations
   
Operating activities:    
Net income (13,100) (18,516)
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation, depletion, amortization and accretion      
Amortization of debt issuance costs      
Share-based compensation      
Derivative loss      
Cash payments on derivative settlements      
Deferred income taxes      
Earnings of affiliates 13,100 18,516
Changes in operating assets and liabilities:    
Oil and natural gas receivables      
Joint interest and other receivables      
Insurance receivables     
Income taxes      
Prepaid expenses and other assets 24,155 38,004
Asset retirement obligation settlements      
Accounts payable, accrued liabilities and other (24,155) (38,004)
Net cash provided by operating activities      
Investing activities:    
Investment in oil and natural gas properties and equipment      
Purchases of furniture, fixtures and other      
Net cash used in investing activities      
Financing activities:    
Borrowings of long-term debt - revolving bank credit facility      
Repayments of long-term debt - revolving bank credit facility      
Dividends to shareholders      
Other      
Net cash used in financing activities      
Increase in cash and cash equivalents      
Cash and cash equivalents, beginning of period      
Cash and cash equivalents, end of period