FAIR VALUE MEASUREMENTS (Details) - USD ($)	Dec. 31, 2018	Jun. 30, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment in marketable securities	$ 1,803,000	$ 4,439,000
Energy [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment in marketable securities	396,000	75,000
Basic materials [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment in marketable securities	357,000	698,000
REITs and real estate companies [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment in marketable securities	315,000	1,484,000
HealthCare [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment in marketable securities	232,000	838,000
Technology [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment in marketable securities	206,000	639,000
Other [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment in marketable securities	$ 297,000	$ 705,000