Fair Value Measurements - Schedule of Assets Measured at Fair Value On a Recurring Basis (Details) - USD ($)	Sep. 30, 2019	Jun. 30, 2019
Investment in marketable securities	$ 2,352,000	$ 2,679,000
Level 1 [Member]
Investment in marketable securities	2,352,000	2,679,000
REITs and Real Estate Companies [Member] | Level 1 [Member]
Investment in marketable securities	817,000	816,000
Consumer Cyclical [Member] | Level 1 [Member]
Investment in marketable securities	584,000	636,000
Energy [Member] | Level 1 [Member]
Investment in marketable securities	484,000	286,000
Basic Materials [Member] | Level 1 [Member]
Investment in marketable securities	321,000	537,000
Financial Services [Member] | Level 1 [Member]
Investment in marketable securities	129,000	331,000
HealthCare [Member] | Level 1 [Member]
Investment in marketable securities	16,000	72,000
Other [Member] | Level 1 [Member]
Investment in marketable securities	$ 1,000	$ 1,000