Note 3 - Loans - Analysis of the Credit Risk Profile of Each Loan Class (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Loans	$ 629,914	$ 574,346
Pass [Member]
Loans	621,806	563,408
Special Mention [Member]
Loans	0	6,069
Substandard [Member]
Loans	8,108	4,869
Doubtful [Member]
Loans	0	0
Real Estate 1 [Member] \| Construction and Land Development [Member]
Loans	27,328	43,164
Real Estate 1 [Member] \| Construction and Land Development [Member] \| Pass [Member]
Loans	26,896	42,636
Real Estate 1 [Member] \| Construction and Land Development [Member] \| Special Mention [Member]
Loans	0	0
Real Estate 1 [Member] \| Construction and Land Development [Member] \| Substandard [Member]
Loans	432	528
Real Estate 1 [Member] \| Construction and Land Development [Member] \| Doubtful [Member]
Loans	0	0
Real Estate 1 [Member] \| Secured by Multi-family Residential Properties [Member]
Loans	235,814	229,438
Real Estate 1 [Member] \| Secured by Multi-family Residential Properties [Member] \| Pass [Member]
Loans	235,035	228,029
Real Estate 1 [Member] \| Secured by Multi-family Residential Properties [Member] \| Special Mention [Member]
Loans	0	524
Real Estate 1 [Member] \| Secured by Multi-family Residential Properties [Member] \| Substandard [Member]
Loans	779	885
Real Estate 1 [Member] \| Secured by Multi-family Residential Properties [Member] \| Doubtful [Member]
Loans	0	0
Real Estate 1 [Member] \| Other Real Estate Loans [Member]
Loans	246,883	236,555
Real Estate 1 [Member] \| Other Real Estate Loans [Member] \| Pass [Member]
Loans	242,441	233,240
Real Estate 1 [Member] \| Other Real Estate Loans [Member] \| Special Mention [Member]
Loans	0	537
Real Estate 1 [Member] \| Other Real Estate Loans [Member] \| Substandard [Member]
Loans	4,442	2,778
Real Estate 1 [Member] \| Other Real Estate Loans [Member] \| Doubtful [Member]
Loans	0	0
Commercial and Industrial Loans [Member]
Loans	109,838	50,153
Commercial and Industrial Loans [Member] \| Pass [Member]
Loans	107,383	48,527
Commercial and Industrial Loans [Member] \| Special Mention [Member]
Loans	0	948
Commercial and Industrial Loans [Member] \| Substandard [Member]
Loans	2,455	678
Commercial and Industrial Loans [Member] \| Doubtful [Member]
Loans	0	0
Consumer and Other Loans [Member]
Loans	10,051	15,036
Consumer and Other Loans [Member] \| Pass [Member]
Loans	10,051	10,976
Consumer and Other Loans [Member] \| Special Mention [Member]
Loans	0	4,060
Consumer and Other Loans [Member] \| Substandard [Member]
Loans	0	0
Consumer and Other Loans [Member] \| Doubtful [Member]
Loans	$ 0	$ 0