Note 11 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Net operating loss carry-forward	$ 22,403	$ 22,915
Allowance for loan losses	2,283	2,090
OREO write-down	2,665	2,665
Alternative minimum tax credit carry-forward		173
Net assets from acquisitions	188	228
Net unrealized loss on securities	646
New market tax credit carry-forward	208	208
Nonaccrual loan interest	310	303
Accrued expenses	99	102
Lease liability	719	766
Other	295	309
Deferred Tax Assets, Gross, Total	29,816	29,759
Deferred tax liabilities:
FHLB stock dividends	563	563
Fixed assets	49	57
Deferred loan costs	170	170
Net unrealized gain on securities		331
Lease right-of-use assets	719	766
Other	107	107
Deferred Tax Liabilities, Gross, Total	1,608	1,994
Net deferred tax asset	$ 28,208	$ 27,765