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Cash and Cash Equivalents (Narrative Disclosures) (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Cash and Cash Equivalents [Abstract]    
Cash and due from banks $ 29,538 $ 16,107
Required reserves in the form of either vault cash or deposits held at the Federal Reserve Bank   9,200
Federal Reserve Bank balances 26,700 44,400
Short-term investments $ 27,371 $ 50,995