Quarterly report pursuant to Section 13 or 15(d)

Stock Plans - Schedule of Stock-based Compensation Expense (Detail)

v3.21.1
Stock Plans - Schedule of Stock-based Compensation Expense (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock-based compensation expense $ 21,610 $ 4,456
Sales and Marketing [Member]    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock-based compensation expense 898 178
Research and Development [Member]    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock-based compensation expense 1,019 237
General and Administrative [Member]    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock-based compensation expense 19,693 4,041
Restricted Stock Units [Member]    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock-based compensation expense 4,171 142
Stock Awards [Member]    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock-based compensation expense 19 62
Performance-based Stock Options [Member]    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock-based compensation expense 16,314 1,968
Stock Options [Member]    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock-based compensation expense 837 2,149
Common Stock Issued for Services [Member]    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock-based compensation expense 119  
Employee Stock Purchase Plan [Member]    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock-based compensation expense $ 150 $ 135