Fair Value Measurements - Schedule of Fair Value Measurements on Non-recurring Basis (Details) - USD ($)	6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2020
Other non-marketable investments	$ 71,000		$ 278,000
Net loss	(89,000)
Level 3 [Member]
Other non-marketable investments	$ 71,000		$ 278,000