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Deposits and Related Interest (Interest Expense) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Deposits and Related Interest [Abstract]    
Demand and savings deposits $ 6,371 $ 6,985
Certificates of deposit 5,653 9,635
Total $ 12,024 $ 16,620