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CASH EQUIVALENTS AND MARKETABLE SECURITIES - Summary of cost and estimated fair value of short-term investments (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]    
Maturing in one year or less $ 218,998 $ 197,676
Maturing after one year through five years 36,700 88,169
Total $ 255,698 $ 285,845