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Stockholders' Equity And Stock-Based Compensation (Summary Of Information On Performance-Based Restricted Stock Units Granted To Executive Officers That Have Not Yet Vested) (Details) - Executive Officer [Member] - Performance-Based Restricted Stock Units [Member] - shares	Dec. 16, 2024	Dec. 15, 2023	Dec. 15, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in Period, Gross	92,971	77,283	90,613
Potential shares at vest date (in shares)	185,942	154,566	181,226

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Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested Options Available, Number Of Shares

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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