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Property and Equipment - Summary of Property and Equipment (Details) - USD ($)
Jun. 30, 2020
Jun. 30, 2019
Oil and natural gas properties:    
Property costs subject to amortization $ 107,390,379 $ 95,622,153
Less: Accumulated depreciation, depletion, and amortization (40,878,098) (35,275,687)
Unproved properties not subject to amortization 0 0
Oil and natural gas properties, net 66,512,281 60,346,466
Other property and equipment:    
Furniture, fixtures and office equipment, at cost 154,731 154,731
Less: Accumulated depreciation (137,092) (128,313)
Other property and equipment, net $ 17,639 $ 26,418