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Condensed Consolidating Financial Information (Condensed Consolidating Statement of Operations) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Revenues: |  |  |  |
Total revenues | $ 193,686 | $ 230,569 | $ 322,497 | $ 519,156
Costs and expenses: |  |  |  |
Lease operating expenses | 17,471 | 17,568 | 48,789 | 51,411
Production taxes | 3,525 | 3,593 | 9,492 | 11,163
Midstream gathering and processing | 45,475 | 42,166 | 122,476 | 100,451
Depreciation, depletion and amortization | 62,285 | 90,329 | 183,414 | 251,393
Impairment of oil and gas properties | 212,194 | 594,776 | 601,806 | 594,776
General and administrative | 10,467 | 11,001 | 32,941 | 31,315
Accretion expense | 269 | 212 | 777 | 594
Total costs and expenses | 351,686 | 759,645 | 999,695 | 1,041,103
LOSS FROM OPERATIONS | (158,000) | (529,076) | (677,198) | (521,947)
OTHER (INCOME) EXPENSE: |  |  |  |
Interest expense | 12,787 | 14,124 | 44,892 | 34,906
Interest income | (337) | (279) | (822) | (536)
Insurance proceeds | (3,750) | 0 | (3,750) | 0
(Income) loss from equity method investments and investments in subsidiaries | (5,997) | 61,891 | 25,576 | 57,036
Total Other (Income) Expense | 2,703 | 75,736 | 65,896 | 91,406
LOSS BEFORE INCOME TAXES | (160,703) | (604,812) | (743,094) | (613,353)
INCOME TAX BENEFIT | (3,407) | (216,603) | (3,755) | (219,338)
NET LOSS | (157,296) | (388,209) | (739,339) | (394,015)
Parent |  |  |  |
Revenues: |  |  |  |
Total revenues | 193,222 | 230,282 | 321,399 | 518,141
Costs and expenses: |  |  |  |
Lease operating expenses | 17,283 | 17,358 | 48,246 | 50,830
Production taxes | 3,495 | 3,570 | 9,410 | 11,083
Midstream gathering and processing | 45,385 | 42,139 | 122,250 | 100,405
Depreciation, depletion and amortization | 62,284 | 90,327 | 183,411 | 251,389
Impairment of oil and gas properties | 212,194 | 594,776 | 601,806 | 594,776
General and administrative | 10,772 | 10,999 | 33,230 | 31,248
Accretion expense | 269 | 212 | 777 | 594
Total costs and expenses | 351,682 | 759,381 | 999,130 | 1,040,325
LOSS FROM OPERATIONS | (158,460) | (529,099) | (677,731) | (522,184)
OTHER (INCOME) EXPENSE: |  |  |  |
Interest expense | 12,787 | 14,124 | 44,891 | 34,906
Interest income | (337) | (279) | (822) | (536)
Insurance proceeds | (3,750) |  | (3,750) |
(Income) loss from equity method investments and investments in subsidiaries | (6,457) | 61,868 | 25,044 | 56,799
Total Other (Income) Expense | 2,243 | 75,713 | 65,363 | 91,169
LOSS BEFORE INCOME TAXES | (160,703) | (604,812) | (743,094) | (613,353)
INCOME TAX BENEFIT | (3,407) | (216,603) | (3,755) | (219,338)
NET LOSS | (157,296) | (388,209) | (739,339) | (394,015)
Guarantors |  |  |  |
Revenues: |  |  |  |
Total revenues | 464 | 287 | 1,098 | 1,015
Costs and expenses: |  |  |  |
Lease operating expenses | 188 | 210 | 543 | 581
Production taxes | 30 | 23 | 82 | 80
Midstream gathering and processing | 90 | 27 | 226 | 46
Depreciation, depletion and amortization | 1 | 2 | 3 | 4
Impairment of oil and gas properties | 0 | 0 | 0 | 0
General and administrative | (305) | 6 | (291) | 47
Accretion expense | 0 | 0 | 0 | 0
Total costs and expenses | 4 | 268 | 563 | 758
LOSS FROM OPERATIONS | 460 | 19 | 535 | 257
OTHER (INCOME) EXPENSE: |  |  |  |
Interest expense | 0 | 0 | 1 | 0
Interest income | 0 | 0 | 0 | 0
Insurance proceeds | 0 |  | 0 |
(Income) loss from equity method investments and investments in subsidiaries | (99) | 0 | (40) | 0
Total Other (Income) Expense | (99) | 0 | (39) | 0
LOSS BEFORE INCOME TAXES | 559 | 19 | 574 | 257
INCOME TAX BENEFIT | 0 | 0 | 0 | 0
NET LOSS | 559 | 19 | 574 | 257
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 | 0 | 0
General and administrative | 0 | (4) | 2 | 20
Accretion expense | 0 | 0 | 0 | 0
Total costs and expenses | 0 | (4) | 2 | 20
LOSS FROM OPERATIONS | 0 | 4 | (2) | (20)
OTHER (INCOME) EXPENSE: |  |  |  |
Interest expense | 0 | 0 | 0 | 0
Interest income | 0 | 0 | 0 | 0
Insurance proceeds | 0 |  | 0 |
(Income) loss from equity method investments and investments in subsidiaries | 364 | 58,653 | 24,812 | 71,289
Total Other (Income) Expense | 364 | 58,653 | 24,812 | 71,289
LOSS BEFORE INCOME TAXES | (364) | (58,649) | (24,814) | (71,309)
INCOME TAX BENEFIT | 0 | 0 | 0 | 0
NET LOSS | (364) | (58,649) | (24,814) | (71,309)
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 | 0 | 0
General and administrative | 0 | 0 | 0 | 0
Accretion expense | 0 | 0 | 0 | 0
Total costs and expenses | 0 | 0 | 0 | 0
LOSS FROM OPERATIONS | 0 | 0 | 0 | 0
OTHER (INCOME) EXPENSE: |  |  |  |
Interest expense | 0 | 0 | 0 | 0
Interest income | 0 | 0 | 0 | 0
Insurance proceeds | 0 |  | 0 |
(Income) loss from equity method investments and investments in subsidiaries | 195 | (58,630) | (24,240) | (71,052)
Total Other (Income) Expense | 195 | (58,630) | (24,240) | (71,052)
LOSS BEFORE INCOME TAXES | (195) | 58,630 | 24,240 | 71,052
INCOME TAX BENEFIT | 0 | 0 | 0 | 0
NET LOSS | $ (195) | $ 58,630 | $ 24,240 | $ 71,052

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