Significant Accounting Policies (Cash and Cash Equivalents) (Details) - USD ($)	3 Months Ended
	Sep. 30, 2020	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Accounting Policies [Abstract]
Restricted Cash		$ 255,668	$ 255,281	$ 254,556	$ 253,135
Maximum maturity of highly liquid investments, period	90 days