Accrued Liabilities and Other (Details) - USD ($)	Mar. 31, 2019	Jun. 30, 2018
Other Liabilities, Current [Abstract]
Accrued incentive and other compensation	$ 322,538	$ 415,182
Accrued severance payments	0	160,089
Asset retirement obligations due within one year	50,244	35,539
Accrued royalties, including suspended accounts	11,552	11,498
Accrued franchise taxes	136,425	162,805
Accrued ad valorem taxes	50,250	89,773
Accrued liabilities and other	$ 571,009	$ 874,886