Derivatives - Summary of Interest Rate Swap Transactions (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2025	Dec. 31, 2024
Derivatives Fair Value [Line Items]
Fair Value of total before netting adjustments	$ 8,915	$ 11,638
Fair Value of Netting adjustments - cash collateral posted by counterparties	(6,070)	(6,330)
Total Swap assets	2,845	5,308
Fair Value of total before netting adjustments	8,915	11,638
Total Swap liabilities	8,915	11,638
Long [Member] \| Interest Rate Swap [Member]
Derivatives Fair Value [Line Items]
Interest Rate Swaps With Loan Customers In An Asset Position Notional Amount	83,271	68,621
Fair Value Of Interest Rate Swaps With Loan Customers In An Asset Position	2,125	1,169
Short [Member] \| Financial Institutions Asset Position [Member]
Derivatives Fair Value [Line Items]
Counterparty Positions With Financial Institutions In An Asset Position Notional Amount	250,598	247,727
Fair Value Of Counterparty Positions With Financial Institutions In An Asset Position	6,790	10,469
Short [Member] \| Interest Rate Swap [Member]
Derivatives Fair Value [Line Items]
Interest Rate Swaps With Loan Customers In A Liability Position Notional Amount	167,327	179,106
Fair Value Of Interest Rate Swaps With Loan Customers In A Liability Position	$ 8,915	$ 11,638

Counterparty positions with financial institutions in an asset position notional amount.

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