v3.20.1
Net Loss Per Share - Schedule of Antidilutive Securities Excluded from Calculation of Diluted Net Loss Per Share (Details) - shares
shares in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Antidilutive securities excluded from calculation of diluted net loss per share 15,246 18,516
Equity Awards to Purchase Common Stock    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Antidilutive securities excluded from calculation of diluted net loss per share 15,227 18,459
Unvested Shares of Common Stock Issued Upon Early Exercise of Stock Options and Business Acquisition    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Antidilutive securities excluded from calculation of diluted net loss per share 19 57