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Note 8 - Components of Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Balance	$ 190,238	$ 184,896
Unrealized holding gain on securities transferred from held to maturity to available for sale, net of tax		891
Balance	187,988	188,157
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]
Balance	(5,072)	(3,704)
Unrealized holding gain (loss) on available for sale securities, net of tax	8,089	(5,182)
Unrealized holding gain on securities transferred from held to maturity to available for sale, net of tax		891
Reclassification adjustment, net of tax	(144)
Balance	2,873	(7,995)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance	(7,013)	(5,991)
Unrealized holding gain (loss) on available for sale securities, net of tax	0	0
Unrealized holding gain on securities transferred from held to maturity to available for sale, net of tax
Reclassification adjustment, net of tax	0
Balance	(7,013)	(5,991)
AOCI Attributable to Parent [Member]
Balance	(12,085)	(9,695)
Unrealized holding gain (loss) on available for sale securities, net of tax	8,089	(5,182)
Unrealized holding gain on securities transferred from held to maturity to available for sale, net of tax		891
Reclassification adjustment, net of tax	(144)
Balance	$ (4,140)	$ (13,986)

X

- Definition

Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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