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Derivatives and hedging activities - Effect of Other Derivative Instruments on the Income Statement (Details) - Derivatives not designated as hedging instruments - Interest Rate Swap Revenue - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Interest Rate Swaps |  |
Derivative Instruments, Gain (Loss) |  |
Amount of Gain (Loss) Recognized in Income | $ 240 | $ 405
Fee Income |  |
Derivative Instruments, Gain (Loss) |  |
Amount of Gain (Loss) Recognized in Income | $ 103 | $ 392

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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4CC -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL109998890-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959 + Details
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