Consolidated Statements Of Changes In Stockholders’ Equity (Parenthetical) - $ / shares	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Consolidated Statements Of Changes In Stockholders’ Equity [Abstract]
Cash dividends per common share	$ 0.76	$ 0.72
Restricted shares issued	19,093
Restricted shares reissued, net of forfeitures	3,215	20,592
Restricted shares reissued, forfeitures		588
Shares repurchased in treasury stock	3,280	8,676
Shares issued/reissued in stock option exercises	490	11,832
Shares issued/reissued under Dividend Reinvestment Plan	5,270	5,582
Shares issued in Employee Stock Purchase Plan	5,166	5,672
Shares reissued through stock option exercise	267