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Property and Equipment - Summary of Property and Equipment (Details) - USD ($)
Jun. 30, 2017
Jun. 30, 2016
Oil and natural gas properties    
Property costs subject to amortization $ 84,962,933 $ 77,408,353
Less: Accumulated depreciation, depletion, and amortization (23,172,865) (17,437,890)
Unproved properties not subject to amortization 0 0
Oil and natural gas properties, net 61,790,068 59,970,463
Other property and equipment    
Furniture, fixtures, office equipment and other, at cost 135,377 235,752
Less: Accumulated depreciation (94,688) (207,103)
Other property and equipment, net $ 40,689 $ 28,649