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STOCK BASED COMPENSATION PLANS - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Weighted average grant date fair value (in USD per share) | $ 4.15 | $ 2.42 | $ 1.80
Fair value of stock options vested | $ 187 | $ 380 | $ 263
Stock grants | Share-based Payment Arrangement, Tranche One |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting percentage | 33.33% |  |
Stock grants | Share-based Payment Arrangement, Tranche Two |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting percentage | 33.33% |  |
Stock grants | Share-based Payment Arrangement, Tranche Three |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting percentage | 33.33% |  |

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