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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Stockholders' Equity [Abstract]
Cash dividends (in dollars per share)	$ 0.50	$ 0.48	$ 1.50	$ 1.44
Net exercise of stock options (in shares)	2,902	5,293	15,201	10,136
Common stock repurchased and returned to unissued status (in shares)	185,107		340,200	15,500
Shares issued for employee stock ownership plan (in shares)				38,883
Directors deferred compensation plan (in shares)	2,027	1,967	347	527
Restricted stock activity (in shares)	2,764	10,078	11,628	21,218

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The number of shares issued upon the exercise of stock options during the period, net of tax benefit.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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Number of shares of capital stock issued (purchased by employees) in connection with an employee stock ownership plan.

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