Annual report pursuant to Section 13 and 15(d)

Condensed Consolidating Financial Information - Condensed Consolidating Statement of Operations (Details)

v3.8.0.1
Condensed Consolidating Financial Information - Condensed Consolidating Statement of Operations (Details) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Revenues:                      
Total revenues $ 397,848,000 $ 265,498,000 $ 323,953,000 $ 333,004,000 $ 63,416,000 $ 193,691,000 $ (28,158,000) $ 156,961,000 $ 1,320,303,000 $ 385,910,000 $ 708,990,000
Costs and expenses:                      
Lease operating expenses                 80,246,000 68,877,000 69,475,000
Production taxes                 21,126,000 13,276,000 14,740,000
Midstream gathering and processing                 248,995,000 165,972,000 138,590,000
Depreciation, depletion and amortization                 364,629,000 245,974,000 337,694,000
Impairment of oil and natural gas properties                 0 715,495,000 1,440,418,000
General and administrative                 52,938,000 43,409,000 41,967,000
Accretion expense                 1,611,000 1,057,000 820,000
Acquisition expense                 2,392,000 0 0
Total costs and expenses                 771,937,000 1,254,060,000 2,043,704,000
INCOME (LOSS) FROM OPERATIONS 173,025,000 50,483,000 143,175,000 181,683,000 (190,949,000) (157,995,000) (323,412,000) (195,794,000) 548,366,000 (868,150,000) (1,334,714,000)
OTHER (INCOME) EXPENSE:                      
Interest expense                 108,198,000 63,530,000 51,221,000
Interest income                 (1,009,000) (1,230,000) (643,000)
Insurance proceeds                 0 (5,718,000) (10,015,000)
Loss (income) from equity method investments                 5,257,000 33,985,000 106,093,000
Other (income) expense                 (1,041,000) 129,000 (485,000)
Total Other (Income) Expense                 111,405,000 114,472,000 146,171,000
INCOME (LOSS) BEFORE INCOME TAXES                 436,961,000 (982,622,000) (1,480,885,000)
INCOME TAX EXPENSE (BENEFIT) (954,000) 2,763,000 0 0 842,000 (3,407,000) (157,000) (191,000) 1,809,000 (2,913,000) (256,001,000)
NET INCOME (LOSS) $ 156,526,000 $ 18,235,000 $ 105,936,000 $ 154,455,000 $ (240,370,000) $ (157,296,000) $ (339,776,000) $ (242,267,000) 435,152,000 (979,709,000) (1,224,884,000)
Gain (Loss) on Extinguishment of Debt                 0 (23,776,000) 0
Parent                      
Revenues:                      
Total revenues                 1,010,989,000 381,931,000 707,868,000
Costs and expenses:                      
Lease operating expenses                 65,793,000 68,034,000 68,632,000
Production taxes                 15,100,000 13,121,000 14,618,000
Midstream gathering and processing                 187,678,000 165,400,000 138,526,000
Depreciation, depletion and amortization                 364,625,000 245,970,000 337,689,000
Impairment of oil and natural gas properties                   715,495,000 1,440,418,000
General and administrative                 55,589,000 43,896,000 41,892,000
Accretion expense                 1,246,000 1,057,000 820,000
Acquisition expense                 0    
Total costs and expenses                 690,031,000 1,252,973,000 2,042,595,000
INCOME (LOSS) FROM OPERATIONS                 320,958,000 (871,042,000) (1,334,727,000)
OTHER (INCOME) EXPENSE:                      
Interest expense                 112,732,000 63,529,000 51,221,000
Interest income                 (988,000) (1,230,000) (643,000)
Insurance proceeds                   (5,718,000) (10,015,000)
Loss (income) from equity method investments                 (226,130,000) 31,078,000 107,252,000
Other (income) expense                 (1,617,000) 145,000 (1,657,000)
Total Other (Income) Expense                 (116,003,000) 111,580,000 146,158,000
INCOME (LOSS) BEFORE INCOME TAXES                 436,961,000 (982,622,000) (1,480,885,000)
INCOME TAX EXPENSE (BENEFIT)                 1,809,000 (2,913,000) (256,001,000)
NET INCOME (LOSS)                 435,152,000 (979,709,000) (1,224,884,000)
Gain (Loss) on Extinguishment of Debt                   (23,776,000)  
Guarantors                      
Revenues:                      
Total revenues                 309,314,000 3,979,000 1,122,000
Costs and expenses:                      
Lease operating expenses                 14,453,000 843,000 843,000
Production taxes                 6,026,000 155,000 122,000
Midstream gathering and processing                 61,317,000 572,000 64,000
Depreciation, depletion and amortization                 4,000 4,000 5,000
Impairment of oil and natural gas properties                   0 0
General and administrative                 (2,654,000) (490,000) 55,000
Accretion expense                 365,000 0 0
Acquisition expense                 2,392,000    
Total costs and expenses                 81,903,000 1,084,000 1,089,000
INCOME (LOSS) FROM OPERATIONS                 227,411,000 2,895,000 33,000
OTHER (INCOME) EXPENSE:                      
Interest expense                 (4,534,000) 1,000 0
Interest income                 (21,000) 0 0
Insurance proceeds                   0 0
Loss (income) from equity method investments                 1,955,000 (89,000) 0
Other (income) expense                 (324,000) (16,000) (346,000)
Total Other (Income) Expense                 (2,924,000) (104,000) (346,000)
INCOME (LOSS) BEFORE INCOME TAXES                 230,335,000 2,999,000 379,000
INCOME TAX EXPENSE (BENEFIT)                 0 0 0
NET INCOME (LOSS)                 230,335,000 2,999,000 379,000
Gain (Loss) on Extinguishment of Debt                   0  
Non-Guarantor                      
Revenues:                      
Total revenues                 0 0 0
Costs and expenses:                      
Lease operating expenses                 0 0 0
Production taxes                 0 0 0
Midstream gathering and processing                 0 0 0
Depreciation, depletion and amortization                 0 0 0
Impairment of oil and natural gas properties                   0 0
General and administrative                 3,000 3,000 20,000
Accretion expense                 0 0 0
Acquisition expense                 0    
Total costs and expenses                 3,000 3,000 20,000
INCOME (LOSS) FROM OPERATIONS                 (3,000) (3,000) (20,000)
OTHER (INCOME) EXPENSE:                      
Interest expense                 0 0 0
Interest income                 0 0 0
Insurance proceeds                   0 0
Loss (income) from equity method investments                 2,189,000 25,150,000 115,544,000
Other (income) expense                 0 0 0
Total Other (Income) Expense                 2,189,000 25,150,000 115,544,000
INCOME (LOSS) BEFORE INCOME TAXES                 (2,192,000) (25,153,000) (115,564,000)
INCOME TAX EXPENSE (BENEFIT)                 0 0 0
NET INCOME (LOSS)                 (2,192,000) (25,153,000) (115,564,000)
Gain (Loss) on Extinguishment of Debt                   0  
Eliminations                      
Revenues:                      
Total revenues                 0 0 0
Costs and expenses:                      
Lease operating expenses                 0 0 0
Production taxes                 0 0 0
Midstream gathering and processing                 0 0 0
Depreciation, depletion and amortization                 0 0 0
Impairment of oil and natural gas properties                   0 0
General and administrative                 0 0 0
Accretion expense                 0 0 0
Acquisition expense                 0    
Total costs and expenses                 0 0 0
INCOME (LOSS) FROM OPERATIONS                 0 0 0
OTHER (INCOME) EXPENSE:                      
Interest expense                 0 0 0
Interest income                 0 0 0
Insurance proceeds                   0 0
Loss (income) from equity method investments                 227,243,000 (22,154,000) (116,703,000)
Other (income) expense                 900,000 0 1,518,000
Total Other (Income) Expense                 228,143,000 (22,154,000) (115,185,000)
INCOME (LOSS) BEFORE INCOME TAXES                 (228,143,000) 22,154,000 115,185,000
INCOME TAX EXPENSE (BENEFIT)                 0 0 0
NET INCOME (LOSS)                 $ (228,143,000) 22,154,000 $ 115,185,000
Gain (Loss) on Extinguishment of Debt                   $ 0