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Stockholders' Equity (Summary Of Common Stock Information) (Details) - shares
shares in Thousands
Mar. 31, 2022
Dec. 31, 2021
Stockholders' Equity Note [Abstract]    
Common stock authorized (in shares) 75,000 75,000
Common stock issued (in shares) 28,499 28,360
Treasury stock (in shares) 3,087 3,087
Common stock outstanding (in shares) 25,412 25,273