Borrowings - Schedule of Borrowing Usage and Interest Rate Information for Federal Funds Purchased and Retail Repurchase Agreements (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Debt Disclosure [Abstract]
Average daily balance during the period	$ 39,791	$ 43,469
Average interest rate during the period	1.89%	1.43%
Maximum month-end balance during the period	$ 47,312	$ 46,798
Weighted average interest rate at period-end	1.74%	1.69%