Qualified Affordable Housing Project Investments - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2024	Dec. 31, 2023
Investments in Affordable Housing Projects [Abstract]
Qualified affordable housing project investments	$ 3,700	$ 3,700	$ 2,400
Funded commitments related to the investments in qualified affordable housing projects			$ 4,000
Unfunded commitments related to the investments in qualified affordable housing projects	991	991
Amortization expense recognized with qualified affordable housing project	111	331
Affordable housing tax credits from other tax benefits	$ 111	$ 329
Impairment losses related to investments in qualified affordable housing projects	no	no