Securities - Securities By Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Available for sale at fair value:
Within one year, Amount	$ 1,153
After one through five years, Amount	1,266
After five through ten years, Amount	11,837
After ten years, Amount	18,074
Securities available for sale	$ 32,330	$ 45,617
Within one year, Yield	1.51%
After one through five years, Yield	3.01%
After five through ten years, Yield	4.40%
After ten years, Yield	2.41%
Total carrying value, Yield	3.13%
Equity securities at fair value:
After ten years, Amount	$ 2,221
Estimated fair value	$ 2,221	1,954
After ten years, Yield	2.34%
Total carrying value, Yield	2.34%
U.S. Government sponsored entities
Available for sale at fair value:
Securities available for sale	$ 0	2,003
State and political subdivisions
Available for sale at fair value:
Within one year, Amount	1,149
After one through five years, Amount	681
After ten years, Amount	545
Securities available for sale	$ 2,375	2,969
Within one year, Yield	1.50%
After one through five years, Yield	3.12%
After ten years, Yield	2.74%
Total carrying value, Yield	2.25%
Residential mortgage backed securities
Available for sale at fair value:
Within one year, Amount	$ 4
After one through five years, Amount	585
After five through ten years, Amount	1,433
After ten years, Amount	12,991
Securities available for sale	$ 15,013	17,410
Within one year, Yield	4.93%
After one through five years, Yield	2.87%
After five through ten years, Yield	2.26%
After ten years, Yield	2.14%
Total carrying value, Yield	2.18%
Corporate and other securities
Available for sale at fair value:
After five through ten years, Amount	$ 10,404
After ten years, Amount	4,538
Securities available for sale	$ 14,942	$ 23,235
After five through ten years, Yield	4.69%
After ten years, Yield	3.15%
Total carrying value, Yield	4.22%