Note 12 - Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Balances of Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Balance	$ 245,879	$ 244,670
Balance	245,312	252,815
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]
Balance	(1,046)	(586)
Other comprehensive income (loss) before reclassifications	552	(595)
Amounts reclassified from accumulated other comprehensive income (loss)	18	(3)
Net current period other comprehensive income (loss)	570	(598)
Balance	(476)	(1,184)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Balance	(68)
Other comprehensive income (loss) before reclassifications	181	(21)
Amounts reclassified from accumulated other comprehensive income (loss)	(64)	17
Net current period other comprehensive income (loss)	117	(4)
Balance	49	(4)
AOCI Attributable to Parent [Member]
Balance	(1,114)	(586)
Other comprehensive income (loss) before reclassifications	733	(616)
Amounts reclassified from accumulated other comprehensive income (loss)	(46)	14
Net current period other comprehensive income (loss)	687	(602)
Balance	$ (427)	$ (1,188)

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

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