INVESTMENTS AND FAIR VALUE MEASUREMENTS - MARKETABLE SECURITIES ON BS (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt and Equity Securities, FV-NI
Fair Value	$ 39,236
Investments-current	100,918	$ 86,431
Other assets	916	2,694
Total assets at fair value	112,658	93,717
Mutual Fund
Debt and Equity Securities, FV-NI
Equity securities	23,209	49,662
U.S. treasury securities
Debt and Equity Securities, FV-NI
Fair Value	25,798
Equity Securities
Debt and Equity Securities, FV-NI
Equity securities	50,213	36,769
Corporate Bond Securities
Debt and Equity Securities, FV-NI
Fair Value	13,438	7,286
Marketable Equity Securities
Debt and Equity Securities, FV-NI
Investments-current	73,422	86,431
Marketable Equity Securities \| Mutual Fund
Debt and Equity Securities, FV-NI
Equity securities	23,209	49,662
Marketable Equity Securities \| U.S. treasury securities
Debt and Equity Securities, FV-NI
Fair Value	0
Marketable Equity Securities \| Equity Securities
Debt and Equity Securities, FV-NI
Equity securities	50,213	36,769
Marketable Equity Securities \| Corporate Bond Securities
Debt and Equity Securities, FV-NI
Fair Value	0	0
Marketable Debt Securities
Debt and Equity Securities, FV-NI
Other assets	39,236	7,286
Marketable Debt Securities \| Mutual Fund
Debt and Equity Securities, FV-NI
Equity securities	0	0
Marketable Debt Securities \| U.S. treasury securities
Debt and Equity Securities, FV-NI
Fair Value	25,798
Marketable Debt Securities \| Equity Securities
Debt and Equity Securities, FV-NI
Equity securities	0	0
Marketable Debt Securities \| Corporate Bond Securities
Debt and Equity Securities, FV-NI
Fair Value	$ 13,438	$ 7,286

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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