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Consolidated Statements Of Changes In Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Statement Of Stockholders Equity [Abstract]
Issuance of restricted stock, stock incentive plan, shares	19,238	18,150
Issuance of common stock, dividend investment plan, shares	13,239	14,176
Issuance of common stock, employee benefit plan, shares	7,204	4,064
Retirement of common stock, shares	67,189	53,988
Dividends declared, per share	$ 1.04	$ 1.00

X

- Definition

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

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-Topic 505
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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.

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Number of shares issued during the period to an employee benefit plan, such as a defined contribution or defined benefit 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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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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