Note 21 - Reclassifications Out of Other Comprehensive Income - Items Reclassified to Net Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Tax expense related to realized gains on securities sold	$ 845	$ 1,228
Net income	3,954	2,496
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	69
Tax expense related to realized gains on securities sold	13	24
Net income	$ 47	$ 45