XML 88 R34.htm IDEA: XBRL DOCUMENT v3.22.0.1
Marketable Securities And Fair Value Measurements - Summary of assets measured at fair value on a recurring basis (Detail) - Fair Value, Recurring [Member] - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Marketable securities:    
Marketable securities   $ 199,438
Total   263,265
Level 1    
Marketable securities:    
Total   63,827
Level 2    
Marketable securities:    
Total   199,438
Money Market Funds    
Cash equivalents:    
Cash equivalents $ 259,609 63,827
Money Market Funds | Level 1    
Cash equivalents:    
Cash equivalents $ 259,609 63,827
U.S. treasury securities    
Marketable securities:    
Marketable securities   129,451
U.S. treasury securities | Level 2    
Marketable securities:    
Marketable securities   129,451
Commercial paper    
Marketable securities:    
Marketable securities   52,441
Commercial paper | Level 2    
Marketable securities:    
Marketable securities   52,441
Corporate debt securities    
Marketable securities:    
Marketable securities   17,546
Corporate debt securities | Level 2    
Marketable securities:    
Marketable securities   $ 17,546