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Share-Based Compensation - Summary of Share-Based Compensation Expense (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Share-based compensation $ 2,154 $ 1,908 $ 6,290 $ 5,935
Research and development [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Share-based compensation 703 619 2,123 2,006
General and Administrative Expenses [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Share-based compensation $ 1,451 $ 1,289 $ 4,167 $ 3,929