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Long-Term Debt - Oasis Senior Notes (Details) - USD ($)
$ in Thousands
9 Months Ended
Jun. 09, 2021
Sep. 30, 2021
Sep. 30, 2020
Debt Instrument [Line Items]      
Proceeds from issuance of senior unsecured notes   $ 850,000 $ 0
Oasis Senior Notes | Senior Notes      
Debt Instrument [Line Items]      
Long-term debt, gross $ 400,000    
Stated interest rate 6.375%    
Proceeds from issuance of senior unsecured notes $ 393,000    
Debt issuance costs $ 9,000    
Oasis Senior Notes | Senior Notes | Level 1      
Debt Instrument [Line Items]      
Long-term debt, fair value   $ 419,000