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Derivative Financial Instruments Fair Value Gains and Losses on Derivative Financial Instruments (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Derivative [Line Items]    
Net fair value gains/(losses) on derivative financial instruments $ 432 $ 700
Mortgage Banking Derivatives [Member]    
Derivative [Line Items]    
Net fair value gains/(losses) on derivative financial instruments 385 796
Interest Rate Swap [Member]    
Derivative [Line Items]    
Net fair value gains/(losses) on derivative financial instruments 0 (104)
Foreign Exchange Contract [Member]    
Derivative [Line Items]    
Net fair value gains/(losses) on derivative financial instruments $ 47 $ 8