Note 10 - Income Taxes - The Components of Net Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Allowance for loan losses and unearned fee income	$ 3,347	$ 3,229
Valuation allowance on other real estate owned	237	188
Defined benefit plan	2,730	2,798
Deferred compensation and other liabilities	1,336	1,334
Discount accretion of securities	15	19
Net unrealized loss on securities available for sale	1,932	1,436
Total deferred tax assets	9,597	9,004
Deferred tax liabilities:
Fixed assets	(620)	(620)
Deposit intangibles	(1,573)	(1,432)
Defined benefit plan, prepaid portion	(1,345)	(1,303)
Total deferred tax liabilities	(3,538)	(3,355)
Net deferred tax assets	$ 6,059	$ 5,649