Annual report [Section 13 and 15(d), not S-K Item 405]

Employee Benefits - Additional Information (Detail)

v3.25.0.1
Employee Benefits - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Defined Contribution Plan Disclosure [Line Items]      
Accrued expense liability for personal paid time off $ 3.4 $ 3.0  
Bank-Owned Life Insurance      
Defined Contribution Plan Disclosure [Line Items]      
Cash surrender value $ 57.2 56.3  
Section 401(k) Plan      
Defined Contribution Plan Disclosure [Line Items]      
Percent of participant contributions (percent) 75.00%    
Percent of employer contribution (up to, percent) 8.00%    
Contributions $ 3.1 $ 3.1 $ 2.8