General form of registration statement for all companies including face-amount certificate companies

Stock Option Plan - Summary of Share-based Payment Arrangement, Expensed and Capitalized, Amount (Detail)

v3.21.2
Stock Option Plan - Summary of Share-based Payment Arrangement, Expensed and Capitalized, Amount (Detail) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Total stock-based compensation expense $ 78,438 $ 8,763
Research and Development Expense [Member]    
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Total stock-based compensation expense 74,314 7,469
Selling, General and Administrative Expenses [Member]    
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Total stock-based compensation expense $ 4,124 $ 1,293