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AFS Securities (Activity related to sales of AFS securities) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]        
Proceeds from sales of AFS of securities $ 33,840 $ 0 $ 33,840 $ 0
Gross realized gains (losses) 6 0 6 0
Applicable income tax expense $ 1 $ 0 $ 1 $ 0