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Deposits (Interest Expense by Deposits Type) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Deposits [Abstract]      
Interest-bearing demand $ 1,091 $ 1,372 $ 1,067
Savings and money market 4,788 4,365 2,887
Time deposits 11,943 22,757 15,101
Total interest expense on deposits $ 17,822 $ 28,494 $ 19,055