Earnings Per Share - Summary of Reconciliation Between Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Numerator:
Net income	$ 12,416	$ 13,316
Less dividends and undistributed earnings allocated to participating securities	(26)	(59)
Net income applicable to common shareholders	$ 12,390	$ 13,257
Denominator:
Weighted average common shares outstanding	7,792,474	6,948,040
Earnings per common share - basic	$ 1.59	$ 1.91
Numerator:
Net income	$ 12,416	$ 13,316
Less dividends and undistributed earnings allocated to participating securities	(26)	(59)
Net income applicable to common shareholders	$ 12,390	$ 13,257
Denominator:
Weighted average number of shares outstanding, basic	7,792,474	6,948,040
Dilutive effect of common stock equivalents	34,000	63,000
Weighted average diluted common shares outstanding	7,826,162	7,010,983
Earnings per common share - diluted	$ 1.58	$ 1.89