Note 13 - Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Balances of 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	$ 244,645	$ 244,366	$ 245,879	$ 244,670
Balance	249,360	244,388	249,360	244,388
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]
Balance	17	(1,342)	(1,046)	(586)
Other comprehensive income (loss) before reclassifications	(60)	28	977	(726)
Amounts reclassified from accumulated other comprehensive income (loss)	3	30	29	28
Net current period other comprehensive income (loss)	(57)	58	1,006	(698)
Balance	(40)	(1,284)	(40)	(1,284)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Balance	47	(75)	(68)
Other comprehensive income (loss) before reclassifications	74	18	354	(232)
Amounts reclassified from accumulated other comprehensive income (loss)	(103)	57	(268)	232
Net current period other comprehensive income (loss)	(29)	75	86
Balance	18		18
AOCI Attributable to Parent [Member]
Balance	64	(1,417)	(1,114)	(586)
Other comprehensive income (loss) before reclassifications	14	46	1,331	(958)
Amounts reclassified from accumulated other comprehensive income (loss)	(100)	87	(239)	260
Net current period other comprehensive income (loss)	(86)	133	1,092	(698)
Balance	$ (22)	$ (1,284)	$ (22)	$ (1,284)

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

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