Consolidated Statements of Income and Comprehensive Income (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Reclassifications for net unrealized gains on available-for-sale securities	$ 90	$ 37
Reclassification adjustment for employee benefit costs included in expense	1,124	1,660
Reclassifications adjustments - tax	$ 217	$ 341

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

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