Note 8 - Federal Home Loan Bank Borrowings (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Advances from Federal Home Loan Banks, Total	$ 7,944	$ 11,028
Real Estate Loans [Member]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	18,000
Investment Securities [Member]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	2,900
Federal Home Loan Bank Stock [Member]
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	833
Federal Home Loan Bank of Atlanta [Member]
Advances from Federal Home Loan Banks, Total	7,900	$ 11,000
Federal Home Loan Bank of Atlanta [Member] | Fixed Rate Advance [Member]
Advances from Federal Home Loan Banks, Total	$ 7,900