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AFS Securities (Activity related to sales of AFS securities) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]    
Proceeds from sales of AFS of securities $ 26,855 $ 0
Gross realized gains (losses) 71  
Applicable income tax expense $ 15