Fair Values of Financial Instruments - Estimated fair values (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Carrying Value
Financial Assets:
Cash and Cash Equivalents	$ 13,950	$ 11,875
Interest-Bearing Deposits	4,735	1,740
Investment Securities	5,120	5,320
Loans - Net	74,262	78,785
Loans Held-for-Sale	2,349	1,637
Accrued Interest Receivable	331	321
FHLB Stock	1,426	1,418
Cash Surrender Value of Life Insurance	4,067	4,044
Financial Liabilities:
Deposits	57,752	58,045
Advances from FHLB	23,597	21,581
Accrued Interest Payable	105	137
Fair Value
Financial Assets:
Cash and Cash Equivalents	13,950	11,875
Interest-Bearing Deposits	4,735	1,740
Investment Securities	5,120	5,320
Loans - Net	79,181	82,267
Loans Held-for-Sale	2,572	1,670
Accrued Interest Receivable	331	321
FHLB Stock	1,426	1,418
Cash Surrender Value of Life Insurance	4,067	4,044
Financial Liabilities:
Deposits	59,708	59,053
Advances from FHLB	24,640	22,007
Accrued Interest Payable	$ 105	$ 137