Earnings Per Share - Calculation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share, Basic [Abstract]
Net income – basic	$ 55,602	$ 65,756	$ 86,602
Basic weighted average common shares	19,233,241	19,332,391	19,288,996
Basic earnings per share	$ 2.89	$ 3.40	$ 4.49
Net income – diluted	$ 55,602	$ 65,756	$ 86,602
Basic weighted average common shares	19,233,241	19,332,391	19,288,996
Restricted stock and RSUs	89,000	77,000	75,000
Diluted weighted average common shares	19,321,717	19,408,619	19,363,809
Diluted earnings per common share	$ 2.88	$ 3.39	$ 4.47