Investment Securities - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2024 USD ($) Securities	Dec. 31, 2023 USD ($) Securities
Debt Securities, Available-for-Sale [Abstract]
Allowance for credit losses on available for sale debt securities	$ 0	$ 0
Number of debt securities with unrealized losses | Securities	210	164
Held to maturity debt securities with unrealized losses | Securities	10	12
Accrued interest receivable on available for sale debt securities	$ 817,000	$ 505,000
Accrued interest receivable on held-to-maturity debt securities	278,000	288,000
Tax (provision) benefit	(1,000)	498,000
Pledged debt securities with a carrying value	$ 57,900,000	$ 65,900,000