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Earnings Per Share - Calculation of Basic and Diluted Earnings Per Share (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Earnings Per Share, Basic [Abstract]      
Net income – basic $ 55,436 $ 62,108 $ 55,602
Basic weighted average common shares 19,070,717 19,149,080 19,233,241
Basic earnings per share $ 2.91 $ 3.24 $ 2.89
Net income – diluted $ 55,436 $ 62,108 $ 55,602
Weighted average common shares 19,070,717 19,149,080 19,233,241
Restricted stock and RSUs 89,000 77,000 89,000
Diluted weighted average common shares 19,159,805 19,226,021 19,321,717
Diluted earnings per common share $ 2.89 $ 3.23 $ 2.88