Fair Values of Financial Instruments - Recurring (Details) - Recurring - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets measured on a recurring basis
Total Investment Securities	$ 5,320	$ 5,781
Mortgage-Backed Securities | FHLMC
Assets measured on a recurring basis
Total Investment Securities	2,645	3,022
Mortgage-Backed Securities | FNMA
Assets measured on a recurring basis
Total Investment Securities		230
Mortgage-Backed Securities | GNMA
Assets measured on a recurring basis
Total Investment Securities		620
SBA 7a Pools
Assets measured on a recurring basis
Total Investment Securities	2,675	1,909
Level 2
Assets measured on a recurring basis
Total Investment Securities	5,320	5,781
Level 2 | Mortgage-Backed Securities | FHLMC
Assets measured on a recurring basis
Total Investment Securities	2,645	3,022
Level 2 | Mortgage-Backed Securities | FNMA
Assets measured on a recurring basis
Total Investment Securities		230
Level 2 | Mortgage-Backed Securities | GNMA
Assets measured on a recurring basis
Total Investment Securities		620
Level 2 | SBA 7a Pools
Assets measured on a recurring basis
Total Investment Securities	$ 2,675	$ 1,909