Other Investments, Net - Schedule of Other Investments, Net (Details) - USD ($)	Sep. 30, 2020	Jun. 30, 2020
Other investments	$ 98,000	$ 278,000
Private Equity Hedge Fund, at Cost [Member]
Other investments	95,000	157,000
Other Preferred Stock, at Cost [Member]
Other investments	$ 3,000	$ 121,000