CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Stockholders' Equity [Abstract]
Cash dividends (in dollars per share)	$ 0.52	$ 0.50	$ 1.56	$ 1.00
Net exercise of stock options (in shares)	417	2,902	3,605	15,201
Common stock repurchased and returned to unissued status (in shares)			71,288	340,200
Shares issued for dividend reinvestment plan (in shares)	12,723		24,752
Directors deferred compensation plan (in shares)	(2,776)	2,027	2,088	347
Restricted stock activity (in shares)	1,346	2,764	9,406	11,628

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

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- Definition

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

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-Topic 505
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-Section S99
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- Definition

Number of shares issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the shareholders to reinvest dividends paid to them by the entity on new issues of stock by the entity.

+ References

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- Definition

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

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- Definition

Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP).

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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