Note 11 - Income Taxes (Details) - Net Deferred Tax Assets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Deferred tax assets:
Net realized losses on securities	$ 144	$ 144
Allowance for loan losses	2,555	2,568
Credit for alternative minimum tax paid	74	537
Other deferred tax assets	2,490	2,595
Total deferred tax assets	5,263	5,844
Deferred tax liabilities:
Unrealized holding gains on securities	2,195	2,844
Defined benefit plans - ASC 835	5	43
Bank premises and equipment	991	1,134
Core deposit intangibles	14	18
Other deferred tax liabilities	127	137
Total deferred tax liabilities	3,332	4,176
Deferred tax asset, net	$ 1,931	$ 1,668