v3.26.1
Derivative Financial Instruments - Schedule of Cumulative Basis Adjustments for Interest Rate Swap Derivatives Designated as Fair Value Accounting Hedges (Detail) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets $ 546 $ 1,719
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Carrying Amount of the Hedged Assets 203,070 214,513
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets $ 546 $ 1,719
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Loans, net of allowance for credit losses of $27,830 and $27,688 Loans, net of allowance for credit losses of $27,830 and $27,688