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Accrued Liabilities and Other (Details) - USD ($)
Sep. 30, 2017
Jun. 30, 2017
Other Liabilities, Current [Abstract]    
Accrued incentive and other compensation $ 143,802 $ 413,113
Accrued severance payments 90,800 0
Asset retirement obligations due within one year 35,115 35,115
Accrued royalties, including suspended accounts 11,524 17,708
Accrued franchise taxes 191,362 150,062
Accrued ad valorem taxes 162,039 108,639
Other accrued liabilities 0 1,841
Accrued liabilities and other $ 634,642 $ 726,478