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FOREIGN SALES AND SIGNIFICANT CUSTOMERS FOREIGN SALES AND SIGNIFICANT CUSTOMERS, NARRATIVE (Details) - Sales Revenue, Net [Member] - Customer Concentration Risk [Member] | 12 Months Ended
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Jun. 30, 2018 Rate | Jun. 30, 2017 Rate
Five largest customers [Member] |  |
Concentration Risk [Line Items] |  |
Concentration Risk, Percentage | 47.00% | 45.00%
Single United States Customer [Member] |  |
Concentration Risk [Line Items] |  |
Concentration Risk, Percentage | 20.00% | 14.00%

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