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INVESTMENTS (Details) - Fair Value, Assets Measured on Recurring Basis - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021
Investments in equity securities:
Equity securities fair value	$ 14,924	$ 18,258
Investments in debt securities:
Debt securities fair value	8,770
Total investments carried at fair value on a recurring basis:	30,776	35,307
Equity Securities International [Member]
Investments in equity securities:
Equity securities fair value	7,717	10,998
Mutual Funds - Fixed Income [Member]
Investments in equity securities:
Equity securities fair value	6,291	6,322
Mutual Funds Global Equity [Member]
Investments in equity securities:
Equity securities fair value	916	938
Available-for-sale Securities [Member] | Corporate Debt Securities [Member]
Investments in debt securities:
Debt securities fair value	15,852	17,049
Fair Value, Inputs, Level 1 [Member]
Investments in equity securities:
Equity securities fair value	7,585	10,097
Investments in debt securities:
Total investments carried at fair value on a recurring basis:	7,585	10,097
Fair Value, Inputs, Level 1 [Member] | Equity Securities International [Member]
Investments in equity securities:
Equity securities fair value	378	2,837
Fair Value, Inputs, Level 1 [Member] | Mutual Funds - Fixed Income [Member]
Investments in equity securities:
Equity securities fair value	6,291	6,322
Fair Value, Inputs, Level 1 [Member] | Mutual Funds Global Equity [Member]
Investments in equity securities:
Equity securities fair value	916	938
Fair Value, Inputs, Level 1 [Member] | Available-for-sale Securities [Member] | Corporate Debt Securities [Member]
Investments in debt securities:
Debt securities fair value	0	0
Fair Value, Inputs, Level 2 [Member]
Investments in equity securities:
Equity securities fair value	0	135
Investments in debt securities:
Total investments carried at fair value on a recurring basis:	0	135
Fair Value, Inputs, Level 2 [Member] | Equity Securities International [Member]
Investments in equity securities:
Equity securities fair value	0	135
Fair Value, Inputs, Level 2 [Member] | Mutual Funds - Fixed Income [Member]
Investments in equity securities:
Equity securities fair value	0	0
Fair Value, Inputs, Level 2 [Member] | Mutual Funds Global Equity [Member]
Investments in equity securities:
Equity securities fair value	0	0
Fair Value, Inputs, Level 2 [Member] | Available-for-sale Securities [Member] | Corporate Debt Securities [Member]
Investments in debt securities:
Debt securities fair value	0	0
Fair Value, Inputs, Level 3 [Member]
Investments in equity securities:
Equity securities fair value	7,339	8,026
Investments in debt securities:
Total investments carried at fair value on a recurring basis:	23,191	25,075
Fair Value, Inputs, Level 3 [Member] | Equity Securities International [Member]
Investments in equity securities:
Equity securities fair value	7,339	8,026
Fair Value, Inputs, Level 3 [Member] | Mutual Funds - Fixed Income [Member]
Investments in equity securities:
Equity securities fair value	0	0
Fair Value, Inputs, Level 3 [Member] | Mutual Funds Global Equity [Member]
Investments in equity securities:
Equity securities fair value	0	0
Fair Value, Inputs, Level 3 [Member] | Available-for-sale Securities [Member] | Corporate Debt Securities [Member]
Investments in debt securities:
Debt securities fair value	$ 15,852	$ 17,049

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