INVESTMENTS (Details) - Fair Value, Assets Measured on Recurring Basis - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020
Investments carried at fair value on a recurring basis:
Equity securities fair value	$ 18,258	$ 11,464
Total investments carried at fair value on a recurring basis:	35,307	11,464
Equity Securities International [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	10,998	4,479
Common Stock - Domestic [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	0	0
Mutual Funds - Fixed Income [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	6,322	6,322
Mutual Funds Global Equity [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	938	0
Mutual Funds, Domestic Equity [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	0	663
Available-for-sale Securities [Member] | Corporate Debt Securities [Member]
Investments carried at fair value on a recurring basis:
Debt securities fair value	17,049	0
Fair Value, Inputs, Level 1 [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	10,097	11,432
Total investments carried at fair value on a recurring basis:	10,097	11,432
Fair Value, Inputs, Level 1 [Member] | Equity Securities International [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	2,837	4,447
Fair Value, Inputs, Level 1 [Member] | Common Stock - Domestic [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	0	0
Fair Value, Inputs, Level 1 [Member] | Mutual Funds - Fixed Income [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	6,322	6,322
Fair Value, Inputs, Level 1 [Member] | Mutual Funds Global Equity [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	938	0
Fair Value, Inputs, Level 1 [Member] | Mutual Funds, Domestic Equity [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	0	663
Fair Value, Inputs, Level 1 [Member] | Available-for-sale Securities [Member] | Corporate Debt Securities [Member]
Investments carried at fair value on a recurring basis:
Debt securities fair value	0	0
Fair Value, Inputs, Level 2 [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	135	32
Total investments carried at fair value on a recurring basis:	135	32
Fair Value, Inputs, Level 2 [Member] | Equity Securities International [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	135	32
Fair Value, Inputs, Level 2 [Member] | Common Stock - Domestic [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	0	0
Fair Value, Inputs, Level 2 [Member] | Mutual Funds - Fixed Income [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	0	0
Fair Value, Inputs, Level 2 [Member] | Mutual Funds Global Equity [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	0	0
Fair Value, Inputs, Level 2 [Member] | Mutual Funds, Domestic Equity [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	0	0
Fair Value, Inputs, Level 2 [Member] | Available-for-sale Securities [Member] | Corporate Debt Securities [Member]
Investments carried at fair value on a recurring basis:
Debt securities fair value	0	0
Fair Value, Inputs, Level 3 [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	8,026	0
Total investments carried at fair value on a recurring basis:	25,075	0
Fair Value, Inputs, Level 3 [Member] | Equity Securities International [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	8,026	0
Fair Value, Inputs, Level 3 [Member] | Common Stock - Domestic [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	0	0
Fair Value, Inputs, Level 3 [Member] | Mutual Funds - Fixed Income [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	0	0
Fair Value, Inputs, Level 3 [Member] | Mutual Funds Global Equity [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	0	0
Fair Value, Inputs, Level 3 [Member] | Mutual Funds, Domestic Equity [Member]
Investments carried at fair value on a recurring basis:
Equity securities fair value	0	0
Fair Value, Inputs, Level 3 [Member] | Available-for-sale Securities [Member] | Corporate Debt Securities [Member]
Investments carried at fair value on a recurring basis:
Debt securities fair value	$ 17,049	$ 0