| Oil and Gas Producing Activities (Unaudited) (Details) | 12 Months Ended | ||
|---|---|---|---|
| Dec. 31, 2021  Boe  well | Dec. 31, 2020  Boe  well | Dec. 31, 2019  Boe  well | |
| Extractive Industries [Abstract] | |||
| Share of oil and gas produced in thousands per day | Boe | 18,600 | 16,200 | 13,700 | 
| Number of oil and gas wells | well | 452 | 531 | 486 | 
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- References No definition available. 
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- Definition The total number of oil and gas wells that have been drilled by no yet completed, where the trust has royalty interest. No definition available. 
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- Definition Share Of Oil And Gas Produced No definition available. 
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