Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 09, 2021	Mar. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total long-term debt, net	$ 1,044,474			$ 710,000
Senior Notes | Oasis Senior Notes
Debt Instrument [Line Items]
Long-term debt, gross		$ 400,000
Less: unamortized deferred financing costs on Senior Notes		$ (9,000)
Senior Notes | OMP Senior Notes
Debt Instrument [Line Items]
Long-term debt, gross			$ 450,000
Less: unamortized deferred financing costs on Senior Notes			$ (9,900)
Revolving Credit Facility | Credit Facility | OMP Credit Facility
Debt Instrument [Line Items]
Total long-term debt, net	213,000
Oasis Guarantors
Debt Instrument [Line Items]
Total long-term debt, net	391,087			260,000
Oasis Guarantors | Senior Notes | Oasis Senior Notes
Debt Instrument [Line Items]
Long-term debt, gross	400,000			0
Less: unamortized deferred financing costs on Senior Notes	(8,913)			0
Oasis Guarantors | Revolving Credit Facility | Credit Facility | Oasis Credit Facility
Debt Instrument [Line Items]
Long-term debt, gross	0			260,000
Oasis Midstream Partners, LP
Debt Instrument [Line Items]
Total long-term debt, net	653,387			450,000
Oasis Midstream Partners, LP | Senior Notes | OMP Senior Notes
Debt Instrument [Line Items]
Long-term debt, gross	450,000			0
Less: unamortized deferred financing costs on Senior Notes	(9,613)			0
Oasis Midstream Partners, LP | Revolving Credit Facility | Credit Facility | OMP Credit Facility
Debt Instrument [Line Items]
Long-term debt, gross	$ 213,000			$ 450,000