CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014
Issuance of common shares under stock based compensation awards, including related tax effects		102,257	71,749
Common stock acquired for treasury		149,844	524,858
Common stock dividend (in dollars per share)	[1]	$ 0.327	$ 0.318

[1] *The computation of per common share data and shares outstanding gives retrospective recognition to a 10% stock dividend declared on July 22, 2015.