Condensed Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parentheticals) - $ / shares	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Common Stock [Member]
Employee stock purchase plan, shares (in shares)	773	1,110
Dividend reinvestment plan, shares (in shares)	38,195	13,788
Stock option exercises, shares (in shares)	31,249	26,375
Stock grants to directors for retainer fees (in shares)	13,000	20,094
Share repurchase program, shares (in shares)	167,878	463,060
Retained Earnings [Member]
Cash dividends per common share (in dollars per share)	$ 0.32	$ 0.28
Cash dividends per common share (in dollars per share)	$ 0.32	$ 0.28