INVESTMENTS AND FAIR VALUE MEASUREMENTS - MARKETABLE SECURITIES ON BS (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Debt and Equity Securities, FV-NI
Corporate bonds	$ 40,550
Investments - current	96,779	$ 86,431
Other assets	3,290	4,809
Total assets at fair value	110,032	93,717
Mutual Fund
Debt and Equity Securities, FV-NI
Equity securities	27,135	49,662
US Treasury Securities [Member]
Debt and Equity Securities, FV-NI
Corporate bonds	25,635
Equity Securities
Debt and Equity Securities, FV-NI
Equity securities	42,347	36,769
Corporate Bond Securities
Debt and Equity Securities, FV-NI
Corporate bonds	14,915	7,286
Marketable Equity Securities
Debt and Equity Securities, FV-NI
Investments - current	69,482	86,431
Marketable Equity Securities \| Mutual Fund
Debt and Equity Securities, FV-NI
Equity securities	27,135	49,662
Marketable Equity Securities \| US Treasury Securities [Member]
Debt and Equity Securities, FV-NI
Corporate bonds	0
Marketable Equity Securities \| Equity Securities
Debt and Equity Securities, FV-NI
Equity securities	42,347	36,769
Marketable Equity Securities \| Corporate Bond Securities
Debt and Equity Securities, FV-NI
Corporate bonds	0	0
Marketable Debt Securities
Debt and Equity Securities, FV-NI
Other assets	40,550	7,286
Marketable Debt Securities \| Mutual Fund
Debt and Equity Securities, FV-NI
Equity securities	0	0
Marketable Debt Securities \| US Treasury Securities [Member]
Debt and Equity Securities, FV-NI
Corporate bonds	25,635
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
Corporate bonds	$ 14,915	$ 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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