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Derivative Financial Instruments - Net Gains and Losses Recognized in Income, Fair Value Hedges (Details) - Fair value hedges - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Interest rate swaps | Interest income, loans and lease financing      
Gains and losses related to derivatives      
Loss recognized $ (671)    
Interest rate swaps | Noninterest income, Other      
Gains and losses related to derivatives      
Gain recognized   $ 629 $ 846
Hedged item | Interest income, loans and lease financing      
Gains and losses related to derivatives      
Gain recognized $ 735    
Hedged item | Noninterest income, Other      
Gains and losses related to derivatives      
Loss recognized   $ (723) $ (841)