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Stock-Based Compensation (Schedule of Restricted Stock Outstanding) (Details) - Restricted Stock [Member] - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Shares
Units outstanding and unearned at January 1	115,780	96,540	73,880
RSUs granted	58,700	66,000	57,100
RSUs vested	(66,100)	(46,760)	(34,440)
Units outstanding and unearned at December 31	108,380	115,780	96,540
Weighted Average Grant Date Fair Value
Units outstanding and unearned at January 1	$ 15.27	$ 16.47	$ 16.87
RSUs granted	18.76	14.27	15.81
RSUs vested	15.77	16.33	16.24
Units outstanding and unearned at December 31	$ 16.86	$ 15.27	$ 16.47

X

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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-Topic 718
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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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-Publisher FASB
-Name Accounting Standards Codification
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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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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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