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Derivatives - Summary of Derivative Instruments, Gain (Loss) (Details) - Fair Value Hedging - Interest Rate Swap Agreements - Interest Income On Loans - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Derivative [Line Items]        
Gain (Loss) on Derivative $ 151 $ (78) $ (591) $ (1,462)
Gain (Loss) on Hedged Item $ (151) $ 78 $ 591 $ 1,462