Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2020	Mar. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Total interest income	$ 5,262	$ 5,492	$ 5,288	$ 5,585	$ 5,624	$ 5,566	$ 5,917	$ 6,123	$ 21,627	$ 23,230
Total interest expense	1,311	1,463	1,444	1,413	1,445	1,470	1,601	1,625	5,631	6,141
Net interest income	3,951	4,029	3,844	4,172	4,179	4,096	4,316	4,498	15,996	17,089
Provision for (recovery of) for loan losses	3	8	7	1	8	(332)	49	5	19	(270)
Total non-interest income	824	965	1,009	941	1,147	1,212	1,056	1,234	3,739	4,649
Total non-interest expense	6,570	6,422	5,896	6,251	6,858	6,989	7,340	6,757	25,139	27,944
Income tax expense					0	0	0	0	0	0
Net loss	$ (1,798)	$ (1,436)	$ (1,050)	$ (1,139)	$ (1,540)	$ (1,349)	$ (2,017)	$ (1,030)	$ (5,423)	$ (5,936)
Earnings (Loss) Per Share, Basic (in dollars per share)	$ (0.49)	$ (0.39)	$ (0.28)	$ (0.31)	$ (0.42)	$ (0.36)	$ (0.55)	$ (0.28)	$ (1.47)	$ (1.60)
Earnings (Loss) Per Share, Diluted (in dollars per share)	$ (0.49)	$ (0.39)	$ (0.28)	$ (0.31)	$ (0.42)	$ (0.36)	$ (0.55)	$ (0.28)	$ (1.47)	$ (1.60)