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Earnings Per Share (Schedule Of Weighted Average Shares Outstanding) (Details) - shares
shares in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Earnings Per Share [Abstract]        
Weighted average common shares, basic 29,576 29,440 29,541 29,440
Dilutive effect of stock options       674
Weighted average common shares, diluted 29,576 29,440 29,541 30,114