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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		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019		Sep. 30, 2018
Balance	$ 72,809	$ 61,648	$ 66,674	[1]	$ 58,154
Unrealized holding losses (net of tax, ($443))	375	(521)	3,292		(1,667)
Pension liability adjustment (net of tax, ($27))					(99)
Change during period	375	(521)	2,952		(1,766)
Unrealized holding losses transferred from held to maturity to available for sale (net of tax, ($91))			(340)
Balance	75,316	63,651	75,316		63,651
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]
Balance			(1,808)		(1,057)
Unrealized holding losses (net of tax, ($443))			3,292		(1,667)
Pension liability adjustment (net of tax, ($27))
Change during period			2,952		(1,667)
Unrealized holding losses transferred from held to maturity to available for sale (net of tax, ($91))			(340)
Balance	1,144	(2,724)	1,144		(2,724)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Balance					99
Unrealized holding losses (net of tax, ($443))
Pension liability adjustment (net of tax, ($27))					(99)
Change during period					(99)
Unrealized holding losses transferred from held to maturity to available for sale (net of tax, ($91))
Balance
AOCI Attributable to Parent [Member]
Balance	769	(2,203)	(1,808)		(958)
Unrealized holding losses (net of tax, ($443))			3,292		(1,667)
Pension liability adjustment (net of tax, ($27))					(99)
Change during period	375	(521)	2,952		(1,766)
Unrealized holding losses transferred from held to maturity to available for sale (net of tax, ($91))			(340)
Balance	$ 1,144	$ (2,724)	$ 1,144		$ (2,724)
[1] Derived from audited consolidated financial statements.

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Amount, after tax and reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan, attributable to parent.

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