MARKETABLE SECURITIES - Schedule of Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
Marketable securities
Cash and money market	$ 173,968	$ 247,335
Cash equivalents	61,338	68,136
Total cash, cash equivalents and restricted cash	235,306	315,471	$ 273,779
Equity securities	5,387	3,336
Marketable securities	433,808	715,005
Total cash, cash equivalents and marketable securities	669,114	1,030,476
Marketable securities
Marketable securities
Available-for-sale debt securities	$ 428,421	$ 711,669

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