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Stock Based Compensation - Fair Values of Stock Options Granted Estimated Using Black-Scholes Valuation Model (Detail)
12 Months Ended
Dec. 31, 2023
$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected option life (in years) 5 years
Employee Stock Option  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected volatility, minimum 84.30%
Expected volatility, maximum 84.30%
Risk-free interest rate, minimum 3.82%
Risk-free interest rate, maximum 4.77%
Weighted average share price of the Company (USD per share) $ 6.93
Employee Stock Option | Minimum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected option life (in years) 5 years
Employee Stock Option | Maximum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected option life (in years) 5 years 9 months 18 days