Note 12 - Other Comprehensive Income - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Reclassification adjustment for (gains) losses included in net income	$ (163)	$ 4	$ (323)	$ 4
Income tax expense	514	508	1,069	934
Net of tax amount	129	(3)	255	(3)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification adjustment for (gains) losses included in net income	(163)	4	(323)	4
Income tax expense	34	(1)	68	(1)
Net of tax amount	$ (129)	$ 3	$ (255)	$ 3

Amount before tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
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