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Oasis Midstream Partners LP (Details) $ / shares in Units, $ in Thousands, MMcf / d in Millions |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 22, 2019 USD ($) | Nov. 19, 2018 USD ($) shares | Nov. 14, 2018 USD ($) $ / shares shares | Nov. 06, 2017 MMcf / d | Sep. 25, 2017 USD ($) $ / shares shares | May 22, 2017 | Dec. 31, 2018 | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Feb. 21, 2019
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of Oasis Midstream common units, net of offering costs |  |  |  |  |  |  |  | $ 44,503 | $ 134,185 | $ 0 |
Common Units |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common units sold in IPO (shares) | shares |  |  |  |  | 5,125,000 |  |  |  |  |  |
Shares issued, price per share (in usd per share) | $ / shares |  |  |  |  | $ 17.00 |  |  |  |  |  |
Subordinated Units |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common units sold in IPO (shares) | shares |  |  |  |  | 13,750,000 |  |  |  |  |  |
Oasis Midstream Partners, LP |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Consideration paid to acquire additional interest |  | $ 251,400 |  |  |  |  |  |  |  |  |
Cash payment to acquire additional interest |  | $ 172,400 |  |  |  |  |  |  |  |  |
Oasis Midstream Partners, LP | Common Units | Partnership Interest |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common units sold in IPO (shares) | shares |  |  | 2,300,000 |  | 7,500,000 |  |  |  |  |  |
Shares issued, price per share, net of underwriting discounts and commissions (in usd per share) | $ / shares |  |  | $ 20 |  |  |  |  |  |  |  |
Proceeds from issuance of shares in IPO |  |  |  |  | $ 134,200 |  |  |  |  |  |
Net proceeds distributed to Oasis |  |  |  |  | $ 132,100 |  |  |  |  |  |
Proceeds from sale of Oasis Midstream common units, net of offering costs |  |  | $ 44,500 |  |  |  |  |  |  |  |
Underwriters' option | Oasis Midstream Partners, LP | Common Units | Partnership Interest |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common units sold in IPO (shares) | shares |  |  | 300,000 |  | 1,125,000 |  |  |  |  |  |
Restricted unit awards | OMP |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  | 10 years |  |  |  |  |
Percentage of outstanding units (percent) |  |  |  |  |  | 10.00% |  |  |  |  |
Services and Secondment Agreement | Affiliated Entity | Commercial Agreements with OPNA, Oasis Petroleum Marketing LLC (“OPM”) and OMS |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contract term, maximum |  |  |  |  |  |  |  | 15 years |  |  |
Gas Gathering, Compression, Processing and Gas Lift Agreement | Affiliated Entity | Contract for Construction of Natural Gas Processing Plant |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Processing plant capacity (in cubic ft per day) | MMcf / d |  |  |  | 200 |  |  |  |  |  |  |
Gas Gathering, Compression, Processing and Gas Lift Agreement | Affiliated Entity | Estimated Reimbursements, Plant II |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Estimate of reimbursable amounts from OMP |  |  |  |  |  |  |  | $ 66,700 |  |  |
Bobcat DevCo | Oasis Petroleum |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ownership interest (percent) |  |  |  |  |  |  | 75.00% | 75.00% |  |  |
Bobcat DevCo | Oasis Midstream Partners, LP |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Limited partner interest in OMP (percent) |  |  |  |  |  |  | 25.00% |  |  |  |
Beartooth DevCo | Oasis Petroleum |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ownership interest (percent) |  |  |  |  |  |  | 30.00% | 30.00% |  |  |
Beartooth DevCo | Oasis Midstream Partners, LP |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Limited partner interest in OMP (percent) |  |  |  |  |  |  | 70.00% |  |  |  |
Oasis Midstream Partners, LP |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Limited partner interest in OMP (percent) |  |  |  |  | 68.60% |  |  |  |  |  |
Limited partner | Oasis Midstream Partners, LP |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Limited partner units issued to acquire additional interest in affiliates | shares |  | 3,950,000 |  |  |  |  |  |  |  |  |
Bobcat DevCo | Bobcat DevCo | Oasis Midstream Partners, LP |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Additional interest acquired (percent) |  | 15.00% |  |  |  |  |  |  |  |  |
Beartooth DevCo | Beartooth DevCo | Oasis Midstream Partners, LP |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Additional interest acquired (percent) |  | 30.00% |  |  |  |  |  |  |  |  |
Subsequent Event | Affiliated Entity | 2019 Capital Expenditures Arrangement |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Estimate of reimbursable amounts from OMP | $ 80,000 |  |  |  |  |  |  |  |  |  |
Subsequent Event | Minimum | Bobcat DevCo | Oasis Petroleum |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ownership interest (percent) |  |  |  |  |  |  |  |  |  |  | 64.00%
Subsequent Event | Maximum | Bobcat DevCo | Oasis Petroleum |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ownership interest (percent) |  |  |  |  |  |  |  |  |  |  | 66.00%

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