XML 46 R33.htm IDEA: XBRL DOCUMENT v3.21.2
Fair Value Hierarchy for Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Assets    
Total assets $ 409,255 $ 157,091
Money Market Funds    
Assets    
Total assets 241,451 23,128
U.S. Treasuries    
Assets    
Total assets 12,281 32,579
U.S. Government Agency Securities    
Assets    
Total assets 36,343 40,321
Corporate Debt Securities    
Assets    
Total assets 119,180 61,063
Warrant Liability    
Liabilities    
Total liabilities 72,017 10,736
Fair Value, Inputs, Level 1    
Assets    
Total assets 241,451 23,128
Fair Value, Inputs, Level 1 | Money Market Funds    
Assets    
Total assets 241,451 23,128
Fair Value, Inputs, Level 2    
Assets    
Total assets 167,804 133,963
Fair Value, Inputs, Level 2 | U.S. Treasuries    
Assets    
Total assets 12,281 32,579
Fair Value, Inputs, Level 2 | U.S. Government Agency Securities    
Assets    
Total assets 36,343 40,321
Fair Value, Inputs, Level 2 | Corporate Debt Securities    
Assets    
Total assets 119,180 61,063
Fair Value, Inputs, Level 3 | Warrant Liability    
Liabilities    
Total liabilities $ 72,017 $ 10,736