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Note 14 - Accumulated Other Comprehensive Income (Loss) - Changes in Each Component of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Balance	$ 77,219	$ 66,674
Unrealized holding gains, net of tax	2,092	1,528
Unrealized holding losses transferred from held to maturity to available for sale, net of tax		(340)
Total other comprehensive income	2,092	1,188
Balance	78,518	69,728
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]
Balance	724	(1,808)
Unrealized holding gains, net of tax	2,092	1,528
Unrealized holding losses transferred from held to maturity to available for sale, net of tax		(340)
Total other comprehensive income		1,188
Total other comprehensive income	2,092
Balance	2,816	(620)
AOCI Attributable to Parent [Member]
Balance	724	(1,808)
Unrealized holding gains, net of tax	2,092	1,528
Unrealized holding losses transferred from held to maturity to available for sale, net of tax		(340)
Total other comprehensive income		1,188
Total other comprehensive income	2,092	1,188
Balance	$ 2,816	$ (620)

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Amount after tax of other comprehensive income (loss) attributable to parent entity, including the reclassification of tax effects resulted from tax rate change.

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