General form of registration statement for all companies including face-amount certificate companies

Risk concentrations (Details)

v3.22.2.2
Risk concentrations (Details) - Sales revenue - Oil and natural gas
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Risk concentrations    
Percentage of wells operated by third-party operating partners 100.00%  
Operator 2    
Risk concentrations    
Concentration risk (as a percent)   78.00%