Annual report pursuant to Section 13 and 15(d)

FAIR VALUE (Details)

v3.22.0.1
FAIR VALUE (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Fair Value    
Investments at fair value $ 111,876 $ 35,852
U S Treasury Securities [Member]    
Fair Value    
Investments at fair value 35,366 10,034
U S Government Sponsored Enterprises Debt Securities [Member]    
Fair Value    
Investments at fair value 14,678 4,920
Corporate Bond Securities And Commercial Paper [Member]    
Fair Value    
Investments at fair value 61,832 20,898
Fair Value Measurements Recurring [Member]    
Fair Value    
Investments at fair value 118,718 55,339
Fair Value Measurements Recurring [Member] | Money Market Funds [Member]    
Fair Value    
Investments at fair value 6,842 19,487
Fair Value Measurements Recurring [Member] | U S Treasury Securities [Member]    
Fair Value    
Investments at fair value 35,366 10,034
Fair Value Measurements Recurring [Member] | U S Government Sponsored Enterprises Debt Securities [Member]    
Fair Value    
Investments at fair value 14,678 4,920
Fair Value Measurements Recurring [Member] | Corporate Bond Securities And Commercial Paper [Member]    
Fair Value    
Investments at fair value 61,832 20,898
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level1 [Member]    
Fair Value    
Investments at fair value 6,842 19,487
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level1 [Member] | Money Market Funds [Member]    
Fair Value    
Investments at fair value 6,842 19,487
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level2 [Member]    
Fair Value    
Investments at fair value 111,876 35,852
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level2 [Member] | U S Treasury Securities [Member]    
Fair Value    
Investments at fair value 35,366 10,034
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level2 [Member] | U S Government Sponsored Enterprises Debt Securities [Member]    
Fair Value    
Investments at fair value 14,678 4,920
Fair Value Measurements Recurring [Member] | Fair Value Inputs Level2 [Member] | Corporate Bond Securities And Commercial Paper [Member]    
Fair Value    
Investments at fair value $ 61,832 $ 20,898