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Stock-Based Compensation - Share Based Compensation Expense Related to Issuance of Stock Option Awards to Employees and Non Employees Related to Employee Stock Purchase Plan (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share based compensation expense, total $ 30,951 $ 16,019 $ 13,317
Research and Development [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share based compensation expense, total 14,147 6,016 4,398
Selling, General and Administrative [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share based compensation expense, total $ 16,804 $ 10,003 $ 8,919