Fair Values of Financial Instruments - Recurring (Details) - Recurring - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets measured on a recurring basis
Total Investment Securities	$ 5,120	$ 5,320
Mortgage-Backed Securities | FHLMC
Assets measured on a recurring basis
Total Investment Securities	2,518	2,645
SBA 7a Pools
Assets measured on a recurring basis
Total Investment Securities	2,602	2,675
Level 2
Assets measured on a recurring basis
Total Investment Securities	5,120	5,320
Level 2 | Mortgage-Backed Securities | FHLMC
Assets measured on a recurring basis
Total Investment Securities	2,518	2,645
Level 2 | SBA 7a Pools
Assets measured on a recurring basis
Total Investment Securities	$ 2,602	$ 2,675