Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation - Summary of Stock Options Outstanding under Plans (Detail)

v3.24.0.1
Share-Based Compensation - Summary of Stock Options Outstanding under Plans (Detail) - 2013 and 2021 Plan - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Options Outstanding, Number of Shares (shares) 61,000 111,000 115,938 125,938
Options Outstanding, Intrinsic Value $ (274)      
Options Outstanding, Weighted-Average Exercise Price Per Share (in USD per share) $ 22.73 $ 19.89 $ 19.58 $ 19.59
Options Outstanding, Weighted-Average Remaining Contractual Life 10 months 2 days      
Options Exercisable, Number of Shares (shares) 61,000 111,000 115,938  
Options Exercisable, Intrinsic Value $ (274)      
Options Exercisable, Weighted-Average Exercise Price Per Share (in USD per share) $ 22.73 $ 19.89 $ 19.58  
Options Exercisable, Weighted-Average Remaining Contractual Life 10 months 2 days      
Intrinsic value of stock options outstanding (in USD per share) $ 19.4      
$20.00 to $21.49        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Options Outstanding, Number of Shares (shares) 3,000      
Options Outstanding, Intrinsic Value $ (7)      
Options Outstanding, Weighted-Average Exercise Price Per Share (in USD per share) $ 20.64      
Options Outstanding, Weighted-Average Remaining Contractual Life 7 months 2 days      
Options Exercisable, Number of Shares (shares) 3,000      
Options Exercisable, Intrinsic Value $ (7)      
Options Exercisable, Weighted-Average Exercise Price Per Share (in USD per share) $ 20.64      
Options Exercisable, Weighted-Average Remaining Contractual Life 7 months 2 days      
$21.50 to $23.49        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Options Outstanding, Number of Shares (shares) 55,000      
Options Outstanding, Intrinsic Value $ (247)      
Options Outstanding, Weighted-Average Exercise Price Per Share (in USD per share) $ 22.73      
Options Outstanding, Weighted-Average Remaining Contractual Life 9 months 25 days      
Options Exercisable, Number of Shares (shares) 55,000      
Options Exercisable, Intrinsic Value $ (247)      
Options Exercisable, Weighted-Average Exercise Price Per Share (in USD per share) $ 22.73      
Options Exercisable, Weighted-Average Remaining Contractual Life 9 months 25 days      
$23.50 to $24.83        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Options Outstanding, Number of Shares (shares) 3,000      
Options Outstanding, Intrinsic Value $ (20)      
Options Outstanding, Weighted-Average Exercise Price Per Share (in USD per share) $ 24.83      
Options Outstanding, Weighted-Average Remaining Contractual Life 1 year 5 months 23 days      
Options Exercisable, Number of Shares (shares) 3,000      
Options Exercisable, Intrinsic Value $ (20)      
Options Exercisable, Weighted-Average Exercise Price Per Share (in USD per share) $ 24.83      
Options Exercisable, Weighted-Average Remaining Contractual Life 1 year 5 months 23 days