Quarterly report pursuant to Section 13 or 15(d)

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

v3.8.0.1
Supplemental Guarantor Information - Condensed Consolidating Statement of Operations (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Condensed Income Statements Captions [Line Items]        
Revenues $ 110,281 $ 107,403 $ 357,997 $ 284,773
Operating costs and expenses:        
Lease operating expenses 35,134 37,520 106,817 118,611
Production taxes 340 482 1,304 1,378
Gathering and transportation 4,108 5,161 15,635 16,651
Depreciation, depletion, amortization and accretion 36,489 51,500 116,843 172,726
Ceiling test write-down of oil and natural gas properties   57,912   279,063
General and administrative expenses 15,631 12,692 45,379 45,370
Derivative (gain) loss 2,879 412 (4,765) 2,861
Total costs and expenses 94,581 165,679 281,213 636,660
Operating income (loss) 15,700 (58,276) 76,784 (351,887)
Interest expense:        
Incurred 11,554 23,693 34,284 81,280
Capitalized   (75)   (520)
Gain on exchange of debt   123,960 7,811 123,960
Other expense, net (41) (73) 5,073 1,209
Income (loss) before income tax expense (benefit) 4,187 42,139 45,238 (309,896)
Income tax expense (benefit) 5,484 (3,789) (11,079) (44,393)
Net income (loss) (1,297) 45,928 56,317 (265,503)
Parent Company        
Condensed Income Statements Captions [Line Items]        
Revenues 51,981 44,585 163,105 119,011
Operating costs and expenses:        
Lease operating expenses 18,796 22,624 59,823 66,823
Production taxes 340 482 1,304 1,378
Gathering and transportation 1,804 2,103 6,948 6,125
Depreciation, depletion, amortization and accretion 18,804 21,959 59,391 65,230
Ceiling test write-down of oil and natural gas properties   28,305   28,305
General and administrative expenses 7,131 5,417 20,569 19,390
Derivative (gain) loss 2,879 412 (4,765) 2,861
Total costs and expenses 49,754 81,302 143,270 190,112
Operating income (loss) 2,227 (36,717) 19,835 (71,101)
Earnings (loss) of affiliates 13,251 (16,925) 49,719 (130,719)
Interest expense:        
Incurred 11,554 23,666 34,284 81,096
Capitalized   (48)   (336)
Gain on exchange of debt   123,960 7,811 123,960
Other expense, net (41) (73) 5,073 1,209
Income (loss) before income tax expense (benefit) 3,965 46,773 38,008 (159,829)
Income tax expense (benefit) 4,432 (3,125) (20,658) (41,915)
Net income (loss) (467) 49,898 58,666 (117,914)
Guarantor Subsidiaries        
Condensed Income Statements Captions [Line Items]        
Revenues 58,300 62,818 194,892 165,762
Operating costs and expenses:        
Lease operating expenses 16,338 14,896 46,994 51,788
Gathering and transportation 2,304 3,058 8,687 10,526
Depreciation, depletion, amortization and accretion 16,855 29,861 55,103 99,956
Ceiling test write-down of oil and natural gas properties   25,317   110,709
General and administrative expenses 8,500 7,275 24,810 25,980
Total costs and expenses 43,997 80,407 135,594 298,959
Operating income (loss) 14,303 (17,589) 59,298 (133,197)
Interest expense:        
Incurred   27   184
Capitalized   (27)   (184)
Income (loss) before income tax expense (benefit) 14,303 (17,589) 59,298 (133,197)
Income tax expense (benefit) 1,052 (664) 9,579 (2,478)
Net income (loss) 13,251 (16,925) 49,719 (130,719)
Eliminations        
Operating costs and expenses:        
Depreciation, depletion, amortization and accretion 830 (320) 2,349 7,540
Ceiling test write-down of oil and natural gas properties   4,290   140,049
Total costs and expenses 830 3,970 2,349 147,589
Operating income (loss) (830) (3,970) (2,349) (147,589)
Earnings (loss) of affiliates (13,251) 16,925 (49,719) 130,719
Interest expense:        
Income (loss) before income tax expense (benefit) (14,081) 12,955 (52,068) (16,870)
Net income (loss) $ (14,081) $ 12,955 $ (52,068) $ (16,870)