Earnings Per Share - Summary of Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share [Abstract]
Net income applicable to common stock	$ 6,788	$ 6,327	$ 12,885	$ 12,348
Weighted average number of common shares outstanding	6,270,000	6,305,000	6,263,000	6,385,000
Basic earnings per share	$ 1.08	$ 1	$ 2.06	$ 1.93
Dilutive effect on common shares outstanding	95	132	112	141
Weighted average number of diluted common shares outstanding	6,365	6,437	6,375	6,526
Diluted earnings per share	$ 1.07	$ 0.98	$ 2.02	$ 1.89