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Securities - Pledged as Collateral (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Available for sale securities    
Amortized Cost $ 318,723 $ 280,824
Fair Value 321,285 286,389
Securities Pledged as Collateral    
Available for sale securities    
Amortized Cost 135,460 146,660
Fair Value $ 138,110 $ 150,130