Note 8 - Reclassifications Out of Other Comprehensive Income - Items Reclassified to Net Income (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Tax expense related to realized gains on securities sold	$ 147	$ 342
Net income	1,190	765
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member]
Realized gains on sales of securities held for sale during the period	60	13
Tax expense related to realized gains on securities sold	13	4
Net income	$ 47	$ 9

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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