Earnings Per Share (Schedule Of Calculation Of Numerator And Denominator In Earnings Per Share) (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Weighted average shares outstanding used to compute basic earnings per share	33,620	33,439	33,541	33,396
Incremental dilutive shares attributable to stock options and restricted stock	29	0	137	0
Shares used to compute diluted earnings per share	33,649	33,439	33,678	33,396