INVESTMENTS AND FAIR VALUE MEASUREMENTS - MARKETABLE SECURITIES ON BS (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt and Equity Securities, FV-NI
Corporate bonds	$ 11,181
Other assets, net	4,001	$ 4,809
Total assets at fair value	94,713	93,717
Mutual Fund
Debt and Equity Securities, FV-NI
Equity securities and mutual funds	38,422	49,662
Equity Securities
Debt and Equity Securities, FV-NI
Equity securities and mutual funds	45,110	36,769
Corporate Bond Securities
Debt and Equity Securities, FV-NI
Corporate bonds	11,181	7,286
Marketable Securities
Debt and Equity Securities, FV-NI
Marketable equity securities	83,532	86,431
Marketable Securities \| Mutual Fund
Debt and Equity Securities, FV-NI
Equity securities and mutual funds	38,422	49,662
Marketable Securities \| Equity Securities
Debt and Equity Securities, FV-NI
Equity securities and mutual funds	45,110	36,769
Marketable Securities \| Corporate Bond Securities
Debt and Equity Securities, FV-NI
Corporate bonds	0	0
Other Current Assets
Debt and Equity Securities, FV-NI
Other assets, net	11,181	7,286
Other Current Assets \| Mutual Fund
Debt and Equity Securities, FV-NI
Equity securities and mutual funds	0	0
Other Current Assets \| Equity Securities
Debt and Equity Securities, FV-NI
Equity securities and mutual funds	0	0
Other Current Assets \| Corporate Bond Securities
Debt and Equity Securities, FV-NI
Corporate bonds	$ 11,181	$ 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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