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Derivatives and hedging activities - Effect of Fair Value and Cash Flow Hedge Accounting on Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Derivative Instruments, Gain (Loss) |  |  |  |  |
Amount of Gain (Loss) Recognized in OCI Included Component |  |  | $ 779 |  | $ (47)
Interest income |  |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |  |
Amount of Gain Reclassified from Accumulated OCI into Income | $ (16) | $ 4 | (48) | $ 228 |
Cash Flow Hedge |  |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |  |
Amount of (Loss) Recognized in OCI on Derivative |  | (43) | (1) | (512) |
Amount of Gain (Loss) Recognized in OCI Included Component |  | (4) |  | (497) |
Amount of (Loss) Recognized in OCI Excluded Component |  | (39) | (1) | (15) |
Amount of Gain Reclassified from Accumulated OCI into Income | (16) | 4 | (48) | 228 |
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income Included Component |  | 20 |  | 276 |
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income Excluded Component | (16) | (16) | (48) | (48) |
Cash Flow Hedge | Interest rate products | Interest income |  |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |  |
Amount of (Loss) Recognized in OCI on Derivative |  | (43) | (1) | (512) |
Amount of Gain (Loss) Recognized in OCI Included Component |  | (4) |  | (497) |
Amount of (Loss) Recognized in OCI Excluded Component |  | (39) | (1) | (15) |
Amount of Gain Reclassified from Accumulated OCI into Income | (16) | 4 | (48) | 228 |
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income Included Component |  | 20 |  | 276 |
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income Excluded Component | $ (16) | $ (16) | $ (48) | $ (48) |

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- Definition Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge excluded in assessment of hedge effectiveness. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4E -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4E + Details
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