Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF MARKETABLE SECURITIES (Details)

v3.21.2
SUMMARY OF MARKETABLE SECURITIES (Details) - USD ($)
Sep. 30, 2021
Dec. 31, 2020
Net Investment Income [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost $ 69,753,000  
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 6,000  
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax (15,000)  
Debt Securities, Available-for-sale, Fair Value 69,744,000 $ 0
Corporate Debt Securities [Member]    
Net Investment Income [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 33,077,000  
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 5,000  
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax (12,000)  
Debt Securities, Available-for-sale, Fair Value 33,070,000  
Asset-backed Securities [Member]    
Net Investment Income [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 10,755,000  
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 1,000  
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax (3,000)  
Debt Securities, Available-for-sale, Fair Value 10,753,000  
Commercial Paper [Member]    
Net Investment Income [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 19,184,000  
Debt Securities, Available-for-sale, Fair Value 19,184,000  
Term Deposits [Member]    
Net Investment Income [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 6,737,000  
Debt Securities, Available-for-sale, Fair Value $ 6,737,000