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Revenue Recognition - Accounts receivable (Details) - USD ($)
Jun. 30, 2021
Dec. 31, 2020
Disaggregation of Revenue [Line Items]    
Accounts receivable $ 3,528,376 $ 3,917,288
Natural gas and oil sales    
Disaggregation of Revenue [Line Items]    
Accounts receivable 2,067,528 2,107,910
Joint interest billing    
Disaggregation of Revenue [Line Items]    
Accounts receivable 87,714 69,495
Gas gathering and compression revenue    
Disaggregation of Revenue [Line Items]    
Accounts receivable 1,372,708 1,736,043
Other    
Disaggregation of Revenue [Line Items]    
Accounts receivable $ 426 $ 3,840