Annual report pursuant to Section 13 and 15(d)

Share-based Compensation - Additional Information (Detail)

v3.24.0.1
Share-based Compensation - Additional Information (Detail)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2023
USD ($)
Bank
$ / shares
shares
Dec. 31, 2022
USD ($)
$ / shares
shares
Dec. 31, 2021
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation expense $ 3,800    
Weighted average period cost expected to be recognized 1 year 9 months 18 days    
Stock options, expiration term from date of grant 10 years    
Share-based compensation expense $ 2,681 $ 2,595 $ 2,436
Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Period of continuous service 3 years    
Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Period of continuous service 5 years    
2013 Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares granted under the plan | shares 0    
2021Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares of common stock to be granted under equity incentive awards | shares 1,500,000    
Shares available for issuance under the Plan | shares (1,116,555)    
2021Plan | Performance Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation expense $ 1,300    
Weighted average period cost expected to be recognized 1 year 10 months 24 days    
Number of shares granted | shares 53,696    
Total fair value of granted shares $ 1,000    
Grant date fair value, vested | $ / shares $ 21.08    
Number of regional banks | Bank 50    
2013 and 2021 Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation expense $ 0    
Options granted in period (shares) | shares 0 0 0
Stock options, expiration term from date of grant     10 years
2013 and 2021 Plan | Restricted stock awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation expense $ 2,500    
Weighted average period cost expected to be recognized 1 year 9 months 18 days    
Total fair value of vested shares $ 1,400 $ 2,100 $ 2,700
Number of shares granted | shares 131,021 101,271 75,679
Grant date fair value, vested | $ / shares $ 19.34 $ 23.95 $ 16.01
2013 and 2021 Plan | Performance Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total fair value of vested shares $ 2,600    
Number of shares granted | shares 53,696 38,036 42,626
Grant date fair value, vested | $ / shares $ 9.65    
Share-based compensation expense $ 700    
2013 and 2021 Plan | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Period of continuous service     3 years
2013 and 2021 Plan | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Period of continuous service     5 years
2013 Equity Compensation Plan | Performance Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options, expiration term from date of grant 3 years    
Share-based compensation arrangement by share-based payment award, vesting rights Each PSU that vests entitles the recipient to receive one share of the Company’s common stock on a specified issuance date