Consolidated Statement of Changes in Shareholders' Equity (Unaudited) (Parentheticals)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Consolidated Statement Of Changes In Shareholders' Equity [Abstract]
Common stock issued to dividend reinvestment plan and employee benefit plans	18,170	35,648
Conversion of non-voting common stock to voting shares	613,158
Vesting of restricted stock, shares issued	4,042	4,397
Vesting of restricted stock, shares deferred	259	8,399
Shares issued from deferred compensation plan	4,521	1,502