Note 3 - Loans - Summary of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Loans	$ 574,346	$ 542,856
Allowance for loan losses	(4,934)	(5,009)	$ (5,326)
Loans, net	569,412	537,847
Commercial and Industrial Loans [Member]
Loans	50,153	44,605
Allowance for loan losses	(562)	(464)	(418)
Consumer and Other Loans [Member]
Loans	15,036	16,886
Allowance for loan losses	(836)	(929)	(771)
Construction and Land Development [Member] \| Real Estate 1 [Member]
Loans	43,164	45,867
Allowance for loan losses	(464)	(561)	(414)
Secured by Multi-family Residential Properties [Member] \| Real Estate 1 [Member]
Loans	229,438	215,945
Allowance for loan losses	(776)	(895)	(775)
Other Real Estate Loans [Member] \| Real Estate 1 [Member]
Loans	236,555	219,553
Allowance for loan losses	$ (2,296)	(2,160)	$ (2,948)
Consumer and Other Loans [Member] \| Consumer and Other Loans [Member]
Loans		$ 16,886

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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