Annual report pursuant to Section 13 and 15(d)

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

v3.22.0.1
Share-based Compensation - Summary of Stock Options Outstanding under Plans (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
2013 and 2021 Plan        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Options Outstanding, Number of Shares (shares) 115,938 125,938 156,438 338,338
Options Outstanding, Intrinsic Value $ 479      
Options Outstanding, Weighted-Average Exercise Price Per Share (in USD per share) $ 19.58 $ 19.59 $ 18.84 $ 17.52
Options Outstanding, Weighted-Average Remaining Contractual Life 2 years 3 months 18 days      
Options Exercisable, Number of Shares (shares) 115,938 125,938 156,438  
Options Exercisable, Intrinsic Value $ 479      
Options Exercisable, Weighted-Average Exercise Price Per Share (in USD per share) $ 19.58 $ 19.59 $ 18.84  
Options Exercisable, Weighted-Average Remaining Contractual Life 2 years 3 months 18 days      
Intrinsic value of stock options outstanding (in USD per share) $ 23.68      
$10.80 to $14.99        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Exercise Price Range, Lower Limit (in USD per share) 10.80      
Exercise Price Range, Upper Limit (in USD per share) $ 14.99      
$10.80 to $14.99 | 2013 and 2021 Plan        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Options Outstanding, Number of Shares (shares) 4,938      
Options Outstanding, Intrinsic Value $ 55      
Options Outstanding, Weighted-Average Exercise Price Per Share (in USD per share) $ 12.54      
Options Outstanding, Weighted-Average Remaining Contractual Life 11 months 12 days      
Options Exercisable, Number of Shares (shares) 4,938      
Options Exercisable, Intrinsic Value $ 55      
Options Exercisable, Weighted-Average Exercise Price Per Share (in USD per share) $ 12.54      
Options Exercisable, Weighted-Average Remaining Contractual Life 11 months 12 days      
$15.00 to $19.99        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Exercise Price Range, Lower Limit (in USD per share) $ 15.00      
Exercise Price Range, Upper Limit (in USD per share) $ 19.99      
$15.00 to $19.99 | 2013 and 2021 Plan        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Options Outstanding, Number of Shares (shares) 50,000      
Options Outstanding, Intrinsic Value $ 363      
Options Outstanding, Weighted-Average Exercise Price Per Share (in USD per share) $ 16.43      
Options Outstanding, Weighted-Average Remaining Contractual Life 1 year 7 months 28 days      
Options Exercisable, Number of Shares (shares) 50,000      
Options Exercisable, Intrinsic Value $ 363      
Options Exercisable, Weighted-Average Exercise Price Per Share (in USD per share) $ 16.43      
Options Exercisable, Weighted-Average Remaining Contractual Life 1 year 7 months 28 days      
$20.00 to $24.83        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Exercise Price Range, Lower Limit (in USD per share) $ 20.00      
Exercise Price Range, Upper Limit (in USD per share) $ 24.83      
$20.00 to $24.83 | 2013 and 2021 Plan        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Options Outstanding, Number of Shares (shares) 61,000      
Options Outstanding, Intrinsic Value $ 61      
Options Outstanding, Weighted-Average Exercise Price Per Share (in USD per share) $ 22.73      
Options Outstanding, Weighted-Average Remaining Contractual Life 2 years 10 months 2 days      
Options Exercisable, Number of Shares (shares) 61,000      
Options Exercisable, Intrinsic Value $ 61      
Options Exercisable, Weighted-Average Exercise Price Per Share (in USD per share) $ 22.73      
Options Exercisable, Weighted-Average Remaining Contractual Life 2 years 10 months 2 days