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Derivatives and hedging activities - Effect of Derivative Instruments Not Designated as Hedging Instruments on the Consolidated Statements of Income and Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Fee Income | Fee Income |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Amount of Gain or (Loss) Recognized in Income on Derivatives | $ 318 | $ 110 | $ 212 | $ 128
Derivatives not designated as hedging instruments |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Amount of Gain or (Loss) Recognized in Income on Derivatives | (52) | (8) | (115) | (51)
Derivatives not designated as hedging instruments | Interest rate products | Other income / (expense) |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Amount of Gain or (Loss) Recognized in Income on Derivatives | (48) | $ (8) | (111) | (50)
Derivatives not designated as hedging instruments | Other contracts | Other income / (expense) |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Amount of Gain or (Loss) Recognized in Income on Derivatives | $ (4) |  | $ (4) | $ (1)

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