Securities (Other Investments) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Other investments	$ 14,794	$ 12,913
Federal Reserve Bank Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Other investments	8,606	7,917
Investment in Federal Home Loan Bank Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Other investments	5,838	4,646
First National Bankers Bank Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Other investments	$ 350	$ 350