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) |