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INVESTMENTS AND FAIR VALUE MEASUREMENTS - NARRATIVE (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Sep. 30, 2021
Debt Securities, Available-for-sale [Line Items]      
Investments in debt securities $ 40,550    
US Treasury Securities and Corporate Bonds      
Debt Securities, Available-for-sale [Line Items]      
Investments in debt securities 40,600 $ 7,300  
Corporate Bond Securities      
Debt Securities, Available-for-sale [Line Items]      
Investments in debt securities $ 14,915 $ 7,286  
Debt securities, available-for-sale, term     1 year