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Oil and Natural Gas Properties - Schedule of Properties (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Sep. 30, 2021
Extractive Industries [Abstract]    
Proved $ 469,968 $ 402,165
Unproved 13,655 20,557
Work-in-progress 27,384 11,411
Total oil and natural gas properties, gross 511,007 434,133
Accumulated depletion and amortization (108,481) (88,336)
Total oil and natural gas properties, net $ 402,526 $ 345,797