XML 58 R31.htm IDEA: XBRL DOCUMENT v3.20.4
Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Current assets:    
Cash equivalents $ 31,676 $ 13,359
Short-term investments 61,615 20,086
Assets measured at fair value 93,291 33,445
Current liabilities:    
Liabilities measured at fair value   2,158
Money Market Funds    
Current assets:    
Cash equivalents 15,677 12,859
Corporate Debt Securities    
Current assets:    
Cash equivalents 2,500 500
Short-term investments 11,588 11,349
Commercial Paper    
Current assets:    
Cash equivalents 13,499  
Short-term investments 50,027 5,987
Government Agency Bonds    
Current assets:    
Short-term investments   2,750
Preferred Stock Tranche Obligation    
Current liabilities:    
Liabilities measured at fair value   2,158
Level 1    
Current assets:    
Cash equivalents 15,677 12,859
Assets measured at fair value 15,677 12,859
Level 1 | Money Market Funds    
Current assets:    
Cash equivalents 15,677 12,859
Level 2    
Current assets:    
Cash equivalents 15,999 500
Short-term investments 61,615 20,086
Assets measured at fair value 77,614 20,586
Level 2 | Corporate Debt Securities    
Current assets:    
Cash equivalents 2,500 500
Short-term investments 11,588 11,349
Level 2 | Commercial Paper    
Current assets:    
Cash equivalents 13,499  
Short-term investments $ 50,027 5,987
Level 2 | Government Agency Bonds    
Current assets:    
Short-term investments   2,750
Level 3    
Current liabilities:    
Liabilities measured at fair value   2,158
Level 3 | Preferred Stock Tranche Obligation    
Current liabilities:    
Liabilities measured at fair value   $ 2,158