Investment in Marketable Securities, Net - Schedule of Changes in Unrealized Gains and Losses on Investments (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Jun. 30, 2019
Net Unrealized Loss	$ (456,000)	$ 67,000	$ (553,000)	$ (330,000)
Corporate Equities [Member]
Cost	5,741,000		5,741,000		$ 10,922,000
Gross Unrealized Gain			84,000		449,000
Gross Unrealized Loss			(5,299,000)		(8,692,000)
Net Unrealized Loss			(5,215,000)		(8,243,000)
Fair Value	$ 526,000		$ 526,000		$ 2,679,000