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Employee Benefits & Stock-Based Compensation Plans (Schedule of Fair Value of Options Granted Assumptions) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Employee Benefits & Stock-Based Compensation Plans [Abstract]
Expected volatility	34.63%	31.15%
Expected life (years)	7 years 6 months	7 years 6 months
Expected dividend yield	1.04%
Risk free interest rate	0.66%	1.83%
Fair value per option	$ 3.79	$ 4.80

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iii)
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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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