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General Partnership, Percentage of Outstanding Units

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Processing Plant Capacity

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Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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Change in the number of units for each class of partners' capital accounts during the year due to acquisitions. Partners include general, limited and preferred partners.

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The number of units sold in a public offering of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners.

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The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity).

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The cash inflow associated with the amount received from entity's first offering of stock to the public.

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The cash inflow from the issuance of common limited partners units during the period.

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Cash inflow received as distributions, returns of capital, or sale proceeds from partnership interests held for investment purposes.

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Amount of transactions with related party during the financial reporting period.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Per share or per unit amount of equity securities issued.

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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%