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INVESTMENTS (Details) - Components of Company's Equity Securities Measured at Fair Value - Equity Securities [Member] - USD ($) $ in Thousands | Dec. 31, 2021 | Jun. 30, 2021
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Equities International [Member] |  |
Equity securities at fair value |  |
Securities, Cost | $ 6,201 | $ 7,076
Securities, Unrealized Gains (Losses) | 2,108 | 3,922
Securities, Fair Value | 8,309 | 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) | (22) | 9
Securities, Fair Value | 6,291 | 6,322
Mutual Funds Global Equity [Member] |  |
Equity securities at fair value |  |
Securities, Cost | 929 | 929
Securities, Unrealized Gains (Losses) | (48) | 9
Securities, Fair Value | 881 | 938
Equity Securities [Member] |  |
Equity securities at fair value |  |
Securities, Cost | 13,488 | 14,363
Securities, Unrealized Gains (Losses) | 1,993 | 3,895
Securities, Fair Value | $ 15,481 | $ 18,258

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