Quarterly report pursuant to Section 13 or 15(d)

Revenue (Revenues from Contracts with Customers) (Details)

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Revenue (Revenues from Contracts with Customers) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Disaggregation of Revenue [Line Items]    
Carried interest recoupment $ 1,112 $ 1,822
Royalties (8,942) (5,877)
Crude oil and natural gas sales 68,656 39,774
Sales Under COSPA [Member]    
Disaggregation of Revenue [Line Items]    
Sales under the COSPA $ 76,486 $ 43,829