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Condensed Consolidating Financial Information - Condensed Consolidating Statement of Operations (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Revenues: |  |  |  |
Total revenues | $ (28,152,000) | $ 112,270,000 | $ 128,811,000 | $ 288,587,000
Costs and expenses: |  |  |  |
Lease operating expenses | 14,661,000 | 16,863,000 | 31,318,000 | 33,843,000
Production taxes | 2,856,000 | 3,285,000 | 5,967,000 | 7,570,000
Midstream gathering and processing | 39,349,000 | 32,904,000 | 77,001,000 | 58,285,000
Depreciation, depletion and amortization | 55,652,000 | 71,155,000 | 121,129,000 | 161,064,000
Impairment of oil and gas properties | 170,621,000 | 0 | 389,612,000 | 0
General and administrative | 11,854,000 | 9,515,000 | 22,474,000 | 20,314,000
Accretion expense | 261,000 | 192,000 | 508,000 | 382,000
Total costs and expenses | 295,254,000 | 133,914,000 | 648,009,000 | 281,458,000
(LOSS) INCOME FROM OPERATIONS | (323,406,000) | (21,644,000) | (519,198,000) | 7,129,000
OTHER (INCOME) EXPENSE: |  |  |  |
Interest expense | 16,082,000 | 12,023,000 | 32,105,000 | 20,782,000
Interest income | (391,000) | (248,000) | (485,000) | (257,000)
Loss (income) from equity method investments and investments in subsidiaries | 836,000 | 15,120,000 | 31,573,000 | (4,855,000)
Nonoperating Income (Expense) | 16,527,000 | 26,895,000 | 63,193,000 | 15,670,000
LOSS BEFORE INCOME TAXES | (339,933,000) | (48,539,000) | (582,391,000) | (8,541,000)
INCOME TAX BENEFIT | (157,000) | (17,214,000) | (348,000) | (2,735,000)
NET LOSS | (339,776,000) | (31,325,000) | (582,043,000) | (5,806,000)
Parent |  |  |  |
Revenues: |  |  |  |
Total revenues | (28,580,000) | 112,027,000 | 128,171,000 | 287,859,000
Costs and expenses: |  |  |  |
Lease operating expenses | 14,491,000 | 16,685,000 | 30,963,000 | 33,472,000
Production taxes | 2,828,000 | 3,260,000 | 5,915,000 | 7,513,000
Midstream gathering and processing | 39,242,000 | 32,892,000 | 76,865,000 | 58,266,000
Depreciation, depletion and amortization | 55,651,000 | 71,154,000 | 121,127,000 | 161,062,000
Impairment of oil and gas properties | 170,621,000 |  | 389,612,000 |
General and administrative | 11,846,000 | 9,488,000 | 22,458,000 | 20,249,000
Accretion expense | 261,000 | 192,000 | 508,000 | 382,000
Total costs and expenses | 294,940,000 | 133,671,000 | 647,448,000 | 280,944,000
(LOSS) INCOME FROM OPERATIONS | (323,520,000) | (21,644,000) | (519,277,000) | 6,915,000
OTHER (INCOME) EXPENSE: |  |  |  |
Interest expense | 16,082,000 | 12,023,000 | 32,104,000 | 20,782,000
Interest income | (391,000) | (248,000) | (485,000) | (257,000)
Loss (income) from equity method investments and investments in subsidiaries | 722,000 | 15,120,000 | 31,495,000 | (5,069,000)
Nonoperating Income (Expense) | 16,413,000 | 26,895,000 | 63,114,000 | 15,456,000
LOSS BEFORE INCOME TAXES | (339,933,000) | (48,539,000) | (582,391,000) | (8,541,000)
INCOME TAX BENEFIT | (157,000) | (17,214,000) | (348,000) | (2,735,000)
NET LOSS | (339,776,000) | (31,325,000) | (582,043,000) | (5,806,000)
Guarantors |  |  |  |
Revenues: |  |  |  |
Total revenues | 428,000 | 243,000 | 640,000 | 728,000
Costs and expenses: |  |  |  |
Lease operating expenses | 170,000 | 178,000 | 355,000 | 371,000
Production taxes | 28,000 | 25,000 | 52,000 | 57,000
Midstream gathering and processing | 107,000 | 12,000 | 136,000 | 19,000
Depreciation, depletion and amortization | 1,000 | 1,000 | 2,000 | 2,000
Impairment of oil and gas properties | 0 |  | 0 |
General and administrative | 8,000 | 5,000 | 14,000 | 41,000
Accretion expense | 0 | 0 | 0 | 0
Total costs and expenses | 314,000 | 221,000 | 559,000 | 490,000
(LOSS) INCOME FROM OPERATIONS | 114,000 | 22,000 | 81,000 | 238,000
OTHER (INCOME) EXPENSE: |  |  |  |
Interest expense | 0 | 0 | 1,000 | 0
Interest income | 0 | 0 | 0 | 0
Loss (income) from equity method investments and investments in subsidiaries | 59,000 | 0 | 59,000 | 0
Nonoperating Income (Expense) | 59,000 | 0 | 60,000 | 0
LOSS BEFORE INCOME TAXES | 55,000 | 22,000 | 21,000 | 238,000
INCOME TAX BENEFIT | 0 | 0 | 0 | 0
NET LOSS | 55,000 | 22,000 | 21,000 | 238,000
Non-Guarantor |  |  |  |
Revenues: |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Costs and expenses: |  |  |  |
Lease operating expenses | 0 | 0 | 0 | 0
Production taxes | 0 | 0 | 0 | 0
Midstream gathering and processing | 0 | 0 | 0 | 0
Depreciation, depletion and amortization | 0 | 0 |  | 0
Impairment of oil and gas properties | 0 |  | 0 |
General and administrative | 0 | 22,000 | 2,000 | 24,000
Accretion expense | 0 | 0 | 0 | 0
Total costs and expenses | 0 | 22,000 | 2,000 | 24,000
(LOSS) INCOME FROM OPERATIONS | 0 | (22,000) | (2,000) | (24,000)
OTHER (INCOME) EXPENSE: |  |  |  |
Interest expense | 0 | 0 | 0 | 0
Interest income | 0 | 0 | 0 | 0
Loss (income) from equity method investments and investments in subsidiaries | 762,000 | 8,494,000 | 24,447,000 | 12,636,000
Nonoperating Income (Expense) | 762,000 | 8,494,000 | 24,447,000 | 12,636,000
LOSS BEFORE INCOME TAXES | (762,000) | (8,516,000) | (24,449,000) | (12,660,000)
INCOME TAX BENEFIT | 0 | 0 | 0 | 0
NET LOSS | (762,000) | (8,516,000) | (24,449,000) | (12,660,000)
Eliminations |  |  |  |
Revenues: |  |  |  |
Total revenues | 0 | 0 | 0 | 0
Costs and expenses: |  |  |  |
Lease operating expenses | 0 | 0 | 0 | 0
Production taxes | 0 | 0 | 0 | 0
Midstream gathering and processing | 0 | 0 | 0 | 0
Depreciation, depletion and amortization | 0 | 0 |  | 0
Impairment of oil and gas properties | 0 |  | 0 |
General and administrative | 0 | 0 | 0 | 0
Accretion expense | 0 | 0 | 0 | 0
Total costs and expenses | 0 | 0 | 0 | 0
(LOSS) INCOME FROM OPERATIONS | 0 | 0 | 0 | 0
OTHER (INCOME) EXPENSE: |  |  |  |
Interest expense | 0 | 0 | 0 | 0
Interest income | 0 | 0 | 0 | 0
Loss (income) from equity method investments and investments in subsidiaries | (707,000) | (8,494,000) | (24,428,000) | (12,422,000)
Nonoperating Income (Expense) | (707,000) | (8,494,000) | (24,428,000) | (12,422,000)
LOSS BEFORE INCOME TAXES | 707,000 | 8,494,000 | 24,428,000 | 12,422,000
INCOME TAX BENEFIT | 0 | 0 | 0 | 0
NET LOSS | $ 707,000 | $ 8,494,000 | $ 24,428,000 | $ 12,422,000

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