Consolidated Statements of Income and Comprehensive Income (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Reclassifications for net unrealized gains on available-for-sale securities	$ 1,825	$ 985	$ 4,715	$ 4,073
Reclassification adjustment for employee benefit costs included in expense	1,867	768	5,601	2,304
Reclassifications adjustments - tax	$ (15)	$ 76	$ (310)	$ 619