Significant Accounting Policies (Cash and Cash Equivalents) (Details) - USD ($)	9 Months Ended
	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017
Accounting Policies [Abstract]
Restricted Cash	$ 252,348	$ 250,000	$ 0	$ 0
Maximum maturity of highly liquid investments, period	90 days