XML 41 R29.htm IDEA: XBRL DOCUMENT v3.21.1
Balance Sheet Components - Summary of Accrued Expenses (Detail) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Payables And Accruals [Abstract]    
Accrued research and development costs $ 39,276 $ 34,398
Employee-related 3,640 14,769
Professional services 7,817 5,184
Other 687 500
Total accrued expenses $ 51,420 $ 54,851