FAIR VALUE MEASUREMENTS (Details) - USD ($)	Dec. 31, 2018	Jun. 30, 2018
Debt Securities, Trading, and Equity Securities, FV-NI [Abstract]
Investment in marketable securities	$ 1,054,000	$ 2,507,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | REITs and real estate companies [Member]
Debt Securities, Trading, and Equity Securities, FV-NI [Abstract]
Investment in marketable securities	192,000	757,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Basic materials [Member]
Debt Securities, Trading, and Equity Securities, FV-NI [Abstract]
Investment in marketable securities	236,000	462,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Energy [Member]
Debt Securities, Trading, and Equity Securities, FV-NI [Abstract]
Investment in marketable securities	212,000	45,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | REITs and real estate companies [Member]
Debt Securities, Trading, and Equity Securities, FV-NI [Abstract]
Investment in marketable securities	118,000	424,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Technology [Member]
Debt Securities, Trading, and Equity Securities, FV-NI [Abstract]
Investment in marketable securities	139,000	399,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other [Member]
Debt Securities, Trading, and Equity Securities, FV-NI [Abstract]
Investment in marketable securities	$ 157,000	$ 420,000