Quarterly report pursuant to Section 13 or 15(d)

Supplemental Guarantor Information (Condensed Consolidating Statement of Income) (Detail)

v2.4.0.6
Supplemental Guarantor Information (Condensed Consolidating Statement of Income) (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Revenues $ 215,513 $ 252,922 $ 451,399 $ 463,777
Operating costs and expenses:        
Lease operating expenses 60,276 48,597 116,938 101,002
Production taxes 1,335 845 2,821 1,133
Gathering and transportation 4,110 3,797 8,330 8,350
Depreciation, depletion and amortization 85,941 83,370 174,432 157,462
General and administrative expenses 14,623 18,002 44,102 36,131
Derivative gain (49,872) (17,332) (10,238) 6,508
Total costs and expenses 116,413 137,279 336,385 310,586
Operating income 99,100 115,643 115,014 153,191
Interest expense:        
Incurred 14,706 12,047 28,612 22,176
Capitalized (3,326) (2,079) (6,517) (3,491)
Loss on extinguishment of debt   20,663   20,663
Income before income tax expense 87,720 85,012 92,919 113,843
Income tax expense 34,153 29,837 36,134 40,019
Net income 53,567 55,175 56,785 73,824
Parent Company
        
Revenues 155,595 192,527 332,157 332,753
Operating costs and expenses:        
Lease operating expenses 53,490 38,066 103,507 80,147
Production taxes 1,335 845 2,821 1,133
Gathering and transportation 3,221 3,249 6,704 6,321
Depreciation, depletion and amortization 63,459 63,216 131,082 114,627
General and administrative expenses 14,623 16,892 41,510 33,549
Derivative gain (49,872) (17,332) (10,238) 6,508
Total costs and expenses 86,256 104,936 275,386 242,285
Operating income 69,339 87,591 56,771 90,468
Earnings of affiliates 19,328 18,234 37,844 40,770
Interest expense:        
Incurred 14,706 12,047 28,612 22,176
Capitalized (3,326) (2,079) (6,517) (3,491)
Loss on extinguishment of debt   20,663   20,663
Income before income tax expense 77,287 75,194 72,520 91,890
Income tax expense 23,720 20,019 15,735 18,066
Net income 53,567 55,175 56,785 73,824
Guarantor Subsidiaries
        
Revenues 59,918 60,395 119,242 131,024
Operating costs and expenses:        
Lease operating expenses 6,786 10,531 13,431 20,855
Gathering and transportation 889 548 1,626 2,029
Depreciation, depletion and amortization 22,482 20,154 43,350 42,835
General and administrative expenses   1,110 2,592 2,582
Total costs and expenses 30,157 32,343 60,999 68,301
Operating income 29,761 28,052 58,243 62,723
Interest expense:        
Income before income tax expense 29,761 28,052 58,243 62,723
Income tax expense 10,433 9,818 20,399 21,953
Net income 19,328 18,234 37,844 40,770
Eliminations
        
Operating costs and expenses:        
Earnings of affiliates (19,328) (18,234) (37,844) (40,770)
Interest expense:        
Income before income tax expense (19,328) (18,234) (37,844) (40,770)
Net income $ (19,328) $ (18,234) $ (37,844) $ (40,770)