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Condensed Consolidating Financial Information - Schedule of 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
Revenues |  |  |  |
Oil and gas revenues | $ 248,648 | $ 156,316 | $ 704,533 | $ 432,968
Bulk oil sales | 21,195 | 1,867 | 56,917 | 1,867
Midstream revenues | 18,767 | 8,487 | 48,939 | 22,380
Well services revenues | 16,138 | 10,641 | 33,566 | 29,459
Total revenues | 304,748 | 177,311 | 843,955 | 486,674
Operating expenses |  |  |  |
Lease operating expenses | 45,334 | 35,696 | 133,871 | 98,283
Midstream operating expenses | 4,301 | 2,617 | 10,891 | 6,095
Well services operating expenses | 9,125 | 5,548 | 21,115 | 15,334
Marketing, transportation and gathering expenses | 15,028 | 7,003 | 38,018 | 22,046
Bulk oil purchases | 21,701 | 1,853 | 57,683 | 1,853
Production taxes | 21,052 | 14,638 | 60,322 | 39,758
Depreciation, depletion and amortization | 132,289 | 111,948 | 384,246 | 356,885
Exploration expenses | 854 | 489 | 4,010 | 1,192
Impairment | 139 | 382 | 6,021 | 3,967
General and administrative expenses | 22,531 | 22,845 | 69,913 | 69,087
Total operating expenses | 272,354 | 203,019 | 786,090 | 614,500
Gain (loss) on sale of properties | 0 | 6 | 0 | (1,305)
Operating income (loss) | 32,394 | (25,702) | 57,865 | (129,131)
Other income (expense) |  |  |  |
Equity in earnings (loss) of subsidiaries | 0 | 0 | 0 | 0
Net gain (loss) on derivative instruments | (54,310) | 20,847 | 52,297 | (55,624)
Interest expense, net of capitalized interest | (37,389) | (31,726) | (110,548) | (105,444)
Gain (loss) on extinguishment of debt | 0 | (13,793) | 0 | 4,865
Other income (expense) | (605) | (259) | (755) | 188
Total other expense | (92,304) | (24,931) | (59,006) | (156,015)
Loss before income taxes | (59,910) | (50,633) | (1,141) | (285,146)
Income tax benefit (expense) | 18,846 | 16,691 | 470 | 96,818
Net loss including non-controlling interests | (41,064) | (33,942) | (671) | (188,328)
Less: Net income attributable to non-controlling interests | 150 | 0 | 150 | 0
Net loss attributable to Oasis | (41,214) | (33,942) | (821) | (188,328)
Intercompany Eliminations [Member] |  |  |  |
Revenues |  |  |  |
Oil and gas revenues | 0 | 0 | 0 | 0
Bulk oil sales | 0 | 0 | 0 | 0
Midstream revenues | 0 | 0 | 0 | 0
Well services revenues | 0 | 0 | 0 | 0
Total revenues | 0 | 0 | 0 | 0
Operating expenses |  |  |  |
Lease operating expenses | 0 | 0 | 0 | 0
Midstream operating expenses | 0 | 0 | 0 | 0
Well services operating expenses | 0 | 0 | 0 | 0
Marketing, transportation and gathering expenses | 0 | 0 | 0 | 0
Bulk oil purchases | 0 | 0 | 0 | 0
Production taxes | 0 | 0 | 0 | 0
Depreciation, depletion and amortization | 0 | 0 | 0 | 0
Exploration expenses | 0 | 0 | 0 | 0
Impairment | 0 | 0 | 0 | 0
General and administrative expenses | 0 | 0 | 0 | 0
Total operating expenses | 0 | 0 | 0 | 0
Gain (loss) on sale of properties |  | 0 |  | 0
Operating income (loss) | 0 | 0 | 0 | 0
Other income (expense) |  |  |  |
Equity in earnings (loss) of subsidiaries | 11,994 | 1,140 | (75,984) | 110,454
Net gain (loss) on derivative instruments | 0 | 0 | 0 | 0
Interest expense, net of capitalized interest | 0 | 0 | 0 | 0
Gain (loss) on extinguishment of debt |  | 0 |  | 0
Other income (expense) | 0 | 0 | 0 | 0
Total other expense | 11,994 | 1,140 | (75,984) | 110,454
Loss before income taxes | 11,994 | 1,140 | (75,984) | 110,454
Income tax benefit (expense) | 0 | 0 | 0 | 0
Net loss including non-controlling interests | 11,994 |  | (75,984) | 110,454
Less: Net income attributable to non-controlling interests | (1,112) |  | (1,112) |
Net loss attributable to Oasis | 13,106 | 1,140 | (74,872) | 110,454
Parent/Issuer [Member] |  |  |  |
Revenues |  |  |  |
Oil and gas revenues | 0 | 0 | 0 | 0
Bulk oil sales | 0 | 0 | 0 | 0
Midstream revenues | 0 | 0 | 0 | 0
Well services revenues | 0 | 0 | 0 | 0
Total revenues | 0 | 0 | 0 | 0
Operating expenses |  |  |  |
Lease operating expenses | 0 | 0 | 0 | 0
Midstream operating expenses | 0 | 0 | 0 | 0
Well services operating expenses | 0 | 0 | 0 | 0
Marketing, transportation and gathering expenses | 0 | 0 | 0 | 0
Bulk oil purchases | 0 | 0 | 0 | 0
Production taxes | 0 | 0 | 0 | 0
Depreciation, depletion and amortization | 0 | 0 | 0 | 0
Exploration expenses | 0 | 0 | 0 | 0
Impairment | 0 | 0 | 0 | 0
General and administrative expenses | 6,775 | 5,930 | 21,374 | 19,776
Total operating expenses | 6,775 | 5,930 | 21,374 | 19,776
Gain (loss) on sale of properties |  | 0 |  | 0
Operating income (loss) | (6,775) | (5,930) | (21,374) | (19,776)
Other income (expense) |  |  |  |
Equity in earnings (loss) of subsidiaries | (13,599) | (1,140) | 74,379 | (110,454)
Net gain (loss) on derivative instruments | 0 | 0 | 0 | 0
Interest expense, net of capitalized interest | (32,894) | (29,876) | (98,751) | (97,898)
Gain (loss) on extinguishment of debt |  | (13,793) |  | 4,865
Other income (expense) | 2 | 1 | 2 | 44
Total other expense | (46,491) | (44,808) | (24,370) | (203,443)
Loss before income taxes | (53,266) | (50,738) | (45,744) | (223,219)
Income tax benefit (expense) | 12,052 | 16,796 | 44,923 | 34,891
Net loss including non-controlling interests | (41,214) |  | (821) | (188,328)
Less: Net income attributable to non-controlling interests | 0 |  | 0 |
Net loss attributable to Oasis | (41,214) | (33,942) | (821) | (188,328)
Combined Guarantor Subsidiaries [Member] |  |  |  |
Revenues |  |  |  |
Oil and gas revenues | 248,648 | 156,316 | 704,533 | 432,968
Bulk oil sales | 21,195 | 1,867 | 56,917 | 1,867
Midstream revenues | 15,828 | 8,487 | 46,000 | 22,380
Well services revenues | 16,138 | 10,641 | 33,566 | 29,459
Total revenues | 301,809 | 177,311 | 841,016 | 486,674
Operating expenses |  |  |  |
Lease operating expenses | 45,334 | 35,696 | 133,871 | 98,283
Midstream operating expenses | 3,621 | 2,617 | 10,211 | 6,095
Well services operating expenses | 9,125 | 5,548 | 21,115 | 15,334
Marketing, transportation and gathering expenses | 15,028 | 7,003 | 38,018 | 22,046
Bulk oil purchases | 21,701 | 1,853 | 57,683 | 1,853
Production taxes | 21,052 | 14,638 | 60,322 | 39,758
Depreciation, depletion and amortization | 132,035 | 111,948 | 383,992 | 356,885
Exploration expenses | 854 | 489 | 4,010 | 1,192
Impairment | 139 | 382 | 6,021 | 3,967
General and administrative expenses | 15,375 | 16,915 | 48,158 | 49,311
Total operating expenses | 264,264 | 197,089 | 763,401 | 594,724
Gain (loss) on sale of properties |  | 6 |  | (1,305)
Operating income (loss) | 37,545 | (19,772) | 77,615 | (109,355)
Other income (expense) |  |  |  |
Equity in earnings (loss) of subsidiaries | 1,605 | 0 | 1,605 | 0
Net gain (loss) on derivative instruments | (54,310) | 20,847 | 52,297 | (55,624)
Interest expense, net of capitalized interest | (4,476) | (1,850) | (11,778) | (7,546)
Gain (loss) on extinguishment of debt |  | 0 |  | 0
Other income (expense) | (607) | (260) | (757) | 144
Total other expense | (57,788) | 18,737 | 41,367 | (63,026)
Loss before income taxes | (20,243) | (1,035) | 118,982 | (172,381)
Income tax benefit (expense) | 6,794 | (105) | (44,453) | 61,927
Net loss including non-controlling interests | (13,449) |  | 74,529 | (110,454)
Less: Net income attributable to non-controlling interests | 150 |  | 150 |
Net loss attributable to Oasis | (13,599) | $ (1,140) | 74,379 | $ (110,454)
Non-Guarantor Subsidiaries [Member] |  |  |  |
Revenues |  |  |  |
Oil and gas revenues | 0 |  | 0 |
Bulk oil sales | 0 |  | 0 |
Midstream revenues | 2,939 |  | 2,939 |
Well services revenues | 0 |  | 0 |
Total revenues | 2,939 |  | 2,939 |
Operating expenses |  |  |  |
Lease operating expenses | 0 |  | 0 |
Midstream operating expenses | 680 |  | 680 |
Well services operating expenses | 0 |  | 0 |
Marketing, transportation and gathering expenses | 0 |  | 0 |
Bulk oil purchases | 0 |  | 0 |
Production taxes | 0 |  | 0 |
Depreciation, depletion and amortization | 254 |  | 254 |
Exploration expenses | 0 |  | 0 |
Impairment | 0 |  | 0 |
General and administrative expenses | 381 |  | 381 |
Total operating expenses | 1,315 |  | 1,315 |
Operating income (loss) | 1,624 |  | 1,624 |
Other income (expense) |  |  |  |
Equity in earnings (loss) of subsidiaries | 0 |  | 0 |
Net gain (loss) on derivative instruments | 0 |  | 0 |
Interest expense, net of capitalized interest | (19) |  | (19) |
Other income (expense) | 0 |  | 0 |
Total other expense | (19) |  | (19) |
Loss before income taxes | 1,605 |  | 1,605 |
Income tax benefit (expense) | 0 |  | 0 |
Net loss including non-controlling interests | 1,605 |  | 1,605 |
Less: Net income attributable to non-controlling interests | 1,112 |  | 1,112 |
Net loss attributable to Oasis | $ 493 |  | $ 493 |

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