Quarterly report pursuant to Section 13 or 15(d)

Supplemental Guarantor Information - Condensed Consolidating Statement of Income (Details)

v2.4.0.8
Supplemental Guarantor Information - Condensed Consolidating Statement of Income (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Condensed Financial Statements Captions [Line Items]        
Revenues $ 234,521 $ 244,555 $ 752,031 $ 739,160
Operating costs and expenses:        
Lease operating expenses 71,732 67,346 189,116 194,935
Production taxes 1,794 1,807 5,628 5,375
Gathering and transportation 4,115 3,611 13,396 12,663
Depreciation, depletion, amortization and accretion 128,671 104,143 380,213 312,911
General and administrative expenses 21,007 20,024 64,277 60,979
Derivative (gain) loss (13,781) 15,659 6,790 6,186
Total costs and expenses 213,538 212,590 659,420 593,049
Operating income 20,983 31,965 92,611 146,111
Interest expense:        
Incurred 21,783 21,373 64,703 64,157
Capitalized (2,191) (2,573) (6,422) (7,537)
Other income 197 9,062 205 9,075
Income before income tax expense 1,588 22,227 34,535 98,566
Income tax expense 904 8,033 12,825 35,358
Net income 684 14,194 21,710 63,208
Eliminations
        
Operating costs and expenses:        
Earnings of affiliates 9,652 (6,171) (10,738) (27,812)
Interest expense:        
Income before income tax expense 9,652 (6,171) (10,738) (27,812)
Net income 9,652 (6,171) (10,738) (27,812)
Parent Company
        
Condensed Financial Statements Captions [Line Items]        
Revenues 155,109 161,927 461,167 479,537
Operating costs and expenses:        
Lease operating expenses 46,698 51,028 126,423 145,703
Production taxes 1,794 1,807 5,628 5,375
Gathering and transportation 2,831 1,479 8,387 6,590
Depreciation, depletion, amortization and accretion 74,512 58,014 208,271 176,922
General and administrative expenses 12,083 11,337 34,165 35,222
Derivative (gain) loss (13,781) 15,659 6,790 6,186
Total costs and expenses 124,137 139,324 389,664 375,998
Operating income 30,972 22,603 71,503 103,539
Earnings of affiliates (9,652) 6,171 10,738 27,812
Interest expense:        
Incurred 20,932 20,611 63,078 61,932
Capitalized (1,340) (1,811) (4,797) (5,312)
Other income 197 9,062 205 9,075
Income before income tax expense 1,925 19,036 24,165 83,806
Income tax expense 1,241 4,842 2,455 20,598
Net income 684 14,194 21,710 63,208
Guarantor Subsidiaries
        
Condensed Financial Statements Captions [Line Items]        
Revenues 79,412 82,628 290,864 259,623
Operating costs and expenses:        
Lease operating expenses 25,034 16,318 62,693 49,232
Gathering and transportation 1,284 2,132 5,009 6,073
Depreciation, depletion, amortization and accretion 54,159 46,129 171,942 135,989
General and administrative expenses 8,924 8,687 30,112 25,757
Total costs and expenses 89,401 73,266 269,756 217,051
Operating income (9,989) 9,362 21,108 42,572
Interest expense:        
Incurred 851 762 1,625 2,225
Capitalized (851) (762) (1,625) (2,225)
Income before income tax expense (9,989) 9,362 21,108 42,572
Income tax expense (337) 3,191 10,370 14,760
Net income $ (9,652) $ 6,171 $ 10,738 $ 27,812