Condensed Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash dividends per common share (in Dollars per share)	$ 0.16	$ 0.14
Common Stock [Member]
Employee stock purchase plan, shares	364	543
Dividend reinvestment plan, shares	17,876	7,172
Stock option exercises, shares	4,700	13,500
Share repurchase program, shares	147,656	103,981
Cash dividends per common share (in Dollars per share)	$ 0.16	$ 0.14
Stock grants to directors for retainer fees		5,994