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Derivatives and Hedging Activities - Cumulative Basis Adjustments on Hedged Items Designated as Fair Value Hedges and the Related Amortized Cost of the Hedged Items (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Derivative Instruments and Hedging Activities Disclosure [Abstract]    
Amortized cost (excluding fair value hedge basis adjustment) $ 659,375 $ 682,878
Hedged Asset, Statement of Financial Position [Extensible Enumeration] Debt securities available-for-sale, at estimated fair value Debt securities available-for-sale, at estimated fair value
Fair value hedge basis adjustment $ (12,223) $ (4,038)