Earnings Per Share (Schedule Of Calculation Of Numerator And Denominator In Earnings Per Share) (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share [Abstract]
Weighted average shares outstanding used to compute basic earnings per share	33,594	33,435	33,500	33,374
Incremental dilutive shares attributable to stock options and restricted stock	146	1	192	0
Shares used to compute diluted earnings per share	33,740	33,436	33,692	33,374