Other Investments, Net - Schedule of Other Investments, Net (Details) - USD ($)	Dec. 31, 2019	Jun. 30, 2019
Other investments	$ 564,000	$ 612,000
Private Equity Hedge Fund, at Cost [Member]
Other investments	376,000	376,000
Other Preferred Stock, at Cost [Member]
Other investments	$ 188,000	$ 236,000