Qualified Affordable Housing Project Investments - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Investments in Affordable Housing Projects [Abstract]
Investments in qualified affordable housing projects included in other assets	$ 15,122	$ 14,149
Unfunded commitments related to the investments in qualified affordable housing projects	5,722	5,634
Recognized amortization expense	1,035	1,086	$ 818
Recognized tax credits and other benefits from its investments in affordable housing tax credits	1,655	1,391	1,402
Impairment losses related to its investment in qualified affordable housing projects	$ 0	$ 0	$ 0