Note 3 - Loans - Analysis of the Credit Risk Profile of Each Loan Class (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Loans	$ 574,346	$ 542,856
Pass [Member]
Loans	563,408	534,083
Special Mention [Member]
Loans	6,069	2,078
Substandard [Member]
Loans	4,869	6,695
Doubtful [Member]
Loans
Real Estate 1 [Member] \| Construction and Land Development [Member]
Loans	43,164	45,867
Real Estate 1 [Member] \| Construction and Land Development [Member] \| Pass [Member]
Loans	42,636	45,054
Real Estate 1 [Member] \| Construction and Land Development [Member] \| Special Mention [Member]
Loans		235
Real Estate 1 [Member] \| Construction and Land Development [Member] \| Substandard [Member]
Loans	528	578
Real Estate 1 [Member] \| Construction and Land Development [Member] \| Doubtful [Member]
Loans
Real Estate 1 [Member] \| Secured by Multi-family Residential Properties [Member]
Loans	229,438	215,945
Real Estate 1 [Member] \| Secured by Multi-family Residential Properties [Member] \| Pass [Member]
Loans	228,029	214,089
Real Estate 1 [Member] \| Secured by Multi-family Residential Properties [Member] \| Special Mention [Member]
Loans	524	924
Real Estate 1 [Member] \| Secured by Multi-family Residential Properties [Member] \| Substandard [Member]
Loans	885	932
Real Estate 1 [Member] \| Secured by Multi-family Residential Properties [Member] \| Doubtful [Member]
Loans
Real Estate 1 [Member] \| Other Real Estate Loans [Member]
Loans	236,555	219,553
Real Estate 1 [Member] \| Other Real Estate Loans [Member] \| Pass [Member]
Loans	233,240	213,681
Real Estate 1 [Member] \| Other Real Estate Loans [Member] \| Special Mention [Member]
Loans	537	900
Real Estate 1 [Member] \| Other Real Estate Loans [Member] \| Substandard [Member]
Loans	2,778	4,972
Real Estate 1 [Member] \| Other Real Estate Loans [Member] \| Doubtful [Member]
Loans
Commercial and Industrial Loans [Member]
Loans	50,153	44,605
Commercial and Industrial Loans [Member] \| Pass [Member]
Loans	48,527	44,373
Commercial and Industrial Loans [Member] \| Special Mention [Member]
Loans	948	19
Commercial and Industrial Loans [Member] \| Substandard [Member]
Loans	678	213
Commercial and Industrial Loans [Member] \| Doubtful [Member]
Loans
Consumer and Other Loans [Member]
Loans	15,036	16,886
Consumer and Other Loans [Member] \| Pass [Member]
Loans	10,976	16,886
Consumer and Other Loans [Member] \| Special Mention [Member]
Loans	4,060
Consumer and Other Loans [Member] \| Substandard [Member]
Loans
Consumer and Other Loans [Member] \| Doubtful [Member]
Loans