Condensed Consolidated Statements of Changes in Shareholders' Equity [Unaudited] (Parentheticals) - $ / shares	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash dividends per common share (in Dollars per share)	$ 0.28	$ 2.24
Common Stock [Member]
Employee stock purchase plan, shares	1,110
Dividend reinvestment plan, shares	13,788
Stock option exercises, shares	26,375	5,920
Stock grants to directors for retainer fees	20,094	7,375
Share repurchase program	463,060
Cash dividends per common share (in Dollars per share)	$ 0.28	$ 2.24
Common stock issued in connection with Firstbank merger		8,087,272