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Stock-Based Compensation (Schedule of PSU Activity) (Details) - Performance Shares [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
PSU compensation expense	$ 1,344	$ 1,262	$ 822
Income tax benefit	(305)	(265)	(173)
PSU compensation expense, net of income taxes	1,039	997	649
Total grant-date fair value of vested PSUs at end of period	$ 1,143

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Amount of increase in additional paid in capital (APIC) resulting from a tax benefit associated with share-based compensation plan other than an employee stock ownership plan (ESOP). Includes, but is not limited to, excess tax benefit.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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