Quarterly report pursuant to Section 13 or 15(d)

Cash, Cash Equivalents and Marketable Securities - Additional Information (Details)

v3.21.2
Cash, Cash Equivalents and Marketable Securities - Additional Information (Details)
9 Months Ended
Sep. 30, 2021
USD ($)
item
Security
Sep. 30, 2020
USD ($)
item
Investments Debt And Equity Securities [Abstract]    
Realized gains (losses) $ 0 $ 0
Number of investments adjusted for other-than-temporary declines in fair value | item 0 0
Number of securities held unrealized position | Security 8  
Unrealized loss position for less than twelve months $ 23,500,000  
Unrealized loss position for more than twelve months 0  
Marketable securities with an other-than temporary impairment $ 0