Note 10 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Allowance for loan losses	$ 2,185	$ 2,047
Deferred compensation	591	557
Unrealized losses on securities available for sale	3,935	2,789
Realized losses in other than temporary impairment charge		65
Foreclosed real estate write-downs	2,351	1,468
Interest income on non-accrual loans	615	525
Net operating loss carryforward	3,541	5,549
Other	1,472	1,266
Total deferred tax assets	14,690	14,266
Deferred loan costs	1,103	998
Premises and equipment	634	211
Other	619	342
Total deferred tax liabilities	2,356	1,551
Net deferred tax asset	$ 12,334	$ 12,715