Note 12 - Commitments, Contingencies and Concentrations - Summary of Loan Concentration Risk (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Loans, gross	$ 826,356	$ 835,207
Credit Concentration Risk [Member] | Retail Space/Shopping Centers [Member]
Loans, gross	$ 43,865	$ 48,021
Loans and Leases receivable, Percentage of Gross Loans	5.31%	5.75%
Credit Concentration Risk [Member] | The 1-4 Family Residential Investment Properties [Member]
Loans, gross	$ 38,122	$ 38,756
Loans and Leases receivable, Percentage of Gross Loans	4.61%	4.64%
Credit Concentration Risk [Member] | Physicians [Member]
Loans, gross	$ 26,739	$ 25,379
Loans and Leases receivable, Percentage of Gross Loans	3.24%	3.04%