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Share-Based Compensation (Narrative Disclosures) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) shares
Share-based Payment Arrangement [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	185,000
Number of shares available for grant	148,757
Deferred compensation expense yet to be recognized | $	$ 3.2
Period of time that deferred compensation expense will be recognized	2 years 1 month 20 days
Stock Issued During Period, Shares, Employee Stock Purchase Plans	3,967
Employee Stock Purchase Plan, Number of Shares Available for Grant	246,033

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Employee Stock Purchase Plan, Number of Shares Available for Grant

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for 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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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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