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Derivative Financial Instruments Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Derivative [Line Items]        
Foreign currency open position $ 500   $ 500  
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months     3,400  
Mortgage Loans Held For Sale [Member]        
Derivative [Line Items]        
Gain (loss) in fair values of mortgage loans held for sale $ 711 $ 1,400 $ (2,200) $ 2,100