Stockholders' Equity (Summary Of Common Stock Information) (Details) - shares shares in Thousands	Sep. 30, 2023	Dec. 31, 2022
Stockholders' Equity Note [Abstract]
Common stock authorized (in shares)	75,000	75,000
Common stock issued (in shares)	28,665	28,519
Treasury stock, common, shares (in shares)	3,341	3,341
Common stock outstanding (in shares)	25,324	25,178