Quarterly report pursuant to Section 13 or 15(d)

Summary of Marketable Securities (Details)

v3.21.1
Summary of Marketable Securities (Details) - USD ($)
Mar. 31, 2021
Dec. 31, 2020
Net Investment Income [Line Items]    
Marketable securities, Amortized Cost $ 57,428,000  
Marketable securities, Gross Unrealized Gain  
Marketable securities, Gross Unrealized Losses (29,000)  
Marketable securities, Fair Value 57,399,000 $ 0
Corporate Debt Securities [Member]    
Net Investment Income [Line Items]    
Marketable securities, Amortized Cost 28,175,000  
Marketable securities, Gross Unrealized Gain  
Marketable securities, Gross Unrealized Losses (28,000)  
Marketable securities, Fair Value 28,147,000  
Asset-backed Securities [Member]    
Net Investment Income [Line Items]    
Marketable securities, Amortized Cost 6,887,000  
Marketable securities, Gross Unrealized Gain  
Marketable securities, Gross Unrealized Losses (1,000)  
Marketable securities, Fair Value 6,886,000  
Commercial Paper [Member]    
Net Investment Income [Line Items]    
Marketable securities, Amortized Cost 22,366,000  
Marketable securities, Gross Unrealized Gain  
Marketable securities, Gross Unrealized Losses  
Marketable securities, Fair Value $ 22,366,000