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INVESTMENT IN MARKETABLE EQUITY SECURITIES (Details) - USD ($) $ in Thousands | 3 Months Ended
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Jun. 30, 2021 | Jun. 30, 2020
Investment In Marketable Equity Securities |  |
Balance, beginning of year |  | $ 68
Unrealized (loss) gain on investment |  | 78
Balance, end of year |  | $ 146

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