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COMPOSITION OF CERTAIN FINANCIAL STATEMENT ITEMS (Details) (Narrative) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2017
Dec. 31, 2017
Jun. 30, 2017
Aggregate cost $ 961 $ 961 $ 663
Gross unrealized gain losses     55
Gross unrealized losses 101 177 2
Gross unrealized gains $ 86 31 57
Income taxes on investments   $ 22 $ 22
Covenant Not To Compete [Member] | Maximum [Member]      
Useful life   10 years  
Customer List [Member] | Maximum [Member]      
Useful life   10 years