Note 21 - Income Taxes - Deferred Tax Asset (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Allowance for loan and lease losses	$ 3,634	$ 3,526
Deferred compensation plan and salary continuation plan	2,385	2,365
State franchise tax	474	291
Acquisition costs	274	274
Net unrealized loss on securities available-for-sale	1,262	134
Interest received on non-accrual loans	86	105
Other	403	484
Total deferred tax assets	8,518	7,179
Deferred tax liabilities:
Deferred loan origination costs and fees	(579)	(619)
Basis difference in fixed assets	(874)
Other	(26)	(55)
Total deferred tax liabilities	(1,479)	(674)
Net deferred tax asset	$ 7,039	$ 6,505