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Derivatives and hedging activities - Effect of Fair Value and Cash Flow Hedge Accounting on the Consolidated Statements of Income and Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025
Derivative Instruments, Gain (Loss) |  |  |  |
Total amounts of income and expense line items presented in the statements of income and comprehensive income in which the effects of fair value or cash flow hedges are recorded | $ 80 | $ 16 | $ 236 | $ (132)
Interest income |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Total amounts of income and expense line items presented in the statements of income and comprehensive income in which the effects of fair value or cash flow hedges are recorded | (118) | (13) | (186) | (53)
The effects of fair value and cash flow hedging: |  |  |  |
Hedged items | (80) | (106) | (236) | 1
Derivatives designated as hedging instruments | $ 37 | $ 93 | $ 127 | $ (54)

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