Oil and Gas Producing Activities (Details)  | 
 Mar. 31, 2021  
Boe  
well 
 | 
 Dec. 31, 2020  
well 
 | 
 Mar. 31, 2020  
Boe 
 | 
|---|---|---|---|
| Extractive Industries [Abstract] | |||
| Share of oil and gas produced (in barrel) | Boe | 16,400 | 16,500 | |
| Number of DUC wells (in wells) | well | 541 | 531 | 
| X | ||||||||||
- References No definition available. 
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| X | ||||||||||
- 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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| X | ||||||||||
- Definition Share Of Oil And Gas Produced No definition available. 
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