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INVESTMENTS (Details) - Components of Company's Equity Securities Measured at Fair Value - Equity Securities [Member] - USD ($) $ in Thousands | Mar. 31, 2022 | Jun. 30, 2021
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Equities International [Member] |  |
Equity securities at fair value |  |
Securities, Cost | $ 6,429 | $ 7,076
Securities, Unrealized Gains (Losses) | (919) | 3,922
Securities, Fair Value | 5,510 | 10,998
Common Stock - Domestic [Member] |  |
Equity securities at fair value |  |
Securities, Cost | 45 | 45
Securities, Unrealized Gains (Losses) | (45) | (45)
Securities, Fair Value | 0 | 0
Mutual Funds - Fixed Income [Member] |  |
Equity securities at fair value |  |
Securities, Cost | 6,313 | 6,313
Securities, Unrealized Gains (Losses) | (142) | 9
Securities, Fair Value | 6,171 | 6,322
Mutual Funds Global Equity [Member] |  |
Equity securities at fair value |  |
Securities, Cost | 929 | 929
Securities, Unrealized Gains (Losses) | (132) | 9
Securities, Fair Value | 797 | 938
Equity Securities [Member] |  |
Equity securities at fair value |  |
Securities, Cost | 13,716 | 14,363
Securities, Unrealized Gains (Losses) | (1,238) | 3,895
Securities, Fair Value | $ 12,478 | $ 18,258

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