Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF MARKETABLE SECURITIES (Details)

v3.21.2
SUMMARY OF MARKETABLE SECURITIES (Details) - USD ($)
Jun. 30, 2021
Dec. 31, 2020
Net Investment Income [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost $ 70,377,000  
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 7,000  
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax (12,000)  
Debt Securities, Available-for-sale 70,372,000 $ 0
Corporate Debt Securities [Member]    
Net Investment Income [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 33,368,000  
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 6,000  
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax (10,000)  
Debt Securities, Available-for-sale 33,364,000  
Asset-backed Securities [Member]    
Net Investment Income [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 11,438,000  
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax 1,000  
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax (2,000)  
Debt Securities, Available-for-sale 11,437,000  
Commercial Paper [Member]    
Net Investment Income [Line Items]    
Debt Securities, Available-for-sale, Amortized Cost 25,571,000  
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax  
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax  
Debt Securities, Available-for-sale $ 25,571,000