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Supplementary Data - Capitalized costs (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Extractive Industries [Abstract]    
Proved $ 1,114,785 $ 996,573
Unproved 40,101 32,089
Less: accumulated depletion (417,442) (383,673)
Net capitalized costs for oil and natural gas properties $ 737,444 $ 644,989