Fair Value Measurements - Schedule of Assets Measured at Fair Value on a Non-Recurring Basis (Details) - USD ($)	9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Jun. 30, 2019
Other non-marketable investments	$ 230,000		$ 351,000
Net loss	(64,000)	$ (61,000)
Level 3 [Member]
Other non-marketable investments	$ 230,000		$ 351,000