Condensed Consolidated Statements of Changes in Shareholders' Equity [Unaudited] (Parentheticals) - $ / shares	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash dividends per common share (in Dollars per share)	$ 0.43	$ 2.36
Common Stock [Member]
Employee stock purchase plan, shares	1,610	523
Dividend reinvestment plan, shares	22,248	4,695
Stock option exercises, shares	27,375	24,110
Stock grants to directors for retainer fees	20,094	7,375
Share repurchase program	765,260
Cash dividends per common share (in Dollars per share)	$ 0.43	$ 2.36
Common stock issued in connection with Firstbank merger		8,087,272