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Investments (Summary of Amortized Cost and Fair Value of Held to Maturity Securities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Schedule of Investments [Line Items]    
HTM debt securities $ 1,291 $ 1,297
Unrealized Gains 89 114
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss 0 0
Debt Securities, Held-to-maturity, Fair Value 1,380 1,411
Obligations of states and political subdivisions    
Schedule of Investments [Line Items]    
HTM debt securities 1,291 1,297
Unrealized Gains 89 114
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss 0 0
Debt Securities, Held-to-maturity, Fair Value $ 1,380 $ 1,411