Earnings Per Share - Summary of Reconciliation Between Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Numerator:
Net income	$ 6,544	$ 14,616	$ 26,075	$ 41,590
Less dividends and undistributed earnings allocated to participating securities	(5)	(73)	(22)	(207)
Net income applicable to common shareholders	$ 6,539	$ 14,543	$ 26,053	$ 41,383
Denominator:
Weighted average common shares outstanding	7,840,197	6,971,583	7,825,195	6,961,833
Earnings per common share - basic	$ 0.83	$ 2.09	$ 3.33	$ 5.94
Numerator:
Net Income (Loss)	$ 6,544	$ 14,616	$ 26,075	$ 41,590
Less dividends and undistributed earnings allocated to participating securities	(5)	(73)	(22)	(207)
Net income applicable to common shareholders	$ 6,539	$ 14,543	$ 26,053	$ 41,383
Denominator:
Weighted average number of shares outstanding, basic	7,840,197	6,971,583	7,825,195	6,961,833
Dilutive effect of common stock equivalents	23,000	47,000	23,000	48,000
Weighted average diluted common shares outstanding	7,862,584	7,018,832	7,848,061	7,010,197
Earnings per common share - diluted	$ 0.83	$ 2.07	$ 3.32	$ 5.9