Fair Value - Assets And Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available-for-sale	$ 32,330	$ 45,617
Equity securities	2,221	1,954
Loans held for sale	10,392	10,712
Swap agreements	(219)	(1,026)
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available-for-sale	27,792	41,217
Equity securities	2,221	1,954
Loans held for sale	10,392	10,712
Swap agreements	(219)	(1,026)
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available-for-sale	4,538	4,400
U.S. Government sponsored entities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available-for-sale	0	2,003
U.S. Government sponsored entities | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available-for-sale		2,003
State and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available-for-sale	2,375	2,969
State and political subdivisions | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available-for-sale	2,375	2,969
Residential mortgage backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available-for-sale	15,013	17,410
Residential mortgage backed securities | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available-for-sale	15,013	17,410
Corporate and other securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available-for-sale	14,942	23,235
Corporate and other securities | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available-for-sale	10,404	18,835
Corporate and other securities | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Debt securities available-for-sale	4,538	4,400
Interest rate swap agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Swap agreements	(219)	(1,026)
Interest rate swap agreements | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Swap agreements	$ (219)	$ (1,026)