FAIR VALUE MEASUREMENTS (Details) - USD ($)	Mar. 31, 2019	Jun. 30, 2018
Assets:
Investment in marketable securities	$ 10,834,000	$ 13,841,000
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Assets:
Investment in marketable securities	10,834,000	13,841,000
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Consumer [Member]
Assets:
Investment in marketable securities	2,196,000	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Financal Services [Member]
Assets:
Investment in marketable securities	389,000	229,000
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | REITs and real estate companies [Member]
Assets:
Investment in marketable securities	2,032,000	4,300,000
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Corporate bonds [Member]
Assets:
Investment in marketable securities	1,791,000	2,282,000
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Energy [Member]
Assets:
Investment in marketable securities	747,000	311,000
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Healthcare [Member]
Assets:
Investment in marketable securities	772,000	1,777,000
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Industrials [Member]
Assets:
Investment in marketable securities	360,000	404,000
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Basic material [Member]
Assets:
Investment in marketable securities	1,626,000	1,038,000
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Other [Member]
Assets:
Investment in marketable securities	$ 921,000	$ 3,500,000