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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Stockholders' Equity [Abstract]
Cash dividends (in dollars per share)	$ 0.50	$ 0.48	$ 1.00	$ 0.96
Net exercise of stock options and related tax benefit (in shares)	7,303	3,173	12,299	4,843
Common stock repurchased and returned to unissued status (in shares)			155,093	15,500
Shares issued for employee stock ownership plan (in shares)				38,883
Directors deferred compensation plan (in shares)	2,027	1,967	2,443	2,251
Restricted stock activity (in shares)	5,569	10,078	8,864	15,410

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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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Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited.

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