Earnings Per Share (Schedule Of Calculation Of Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Earnings Per Share Reconciliation [Line Items]
Net income	$ 15,374	$ 20,412	$ 44,904	$ 46,763
Denominator for basic earnings per share	36,051	35,647	35,970	35,535
Denominator for diluted earnings per share	36,629	35,876	36,469	35,879
Earnings per share:
Basic	$ 0.43	$ 0.57	$ 1.25	$ 1.32
Diluted	$ 0.42	$ 0.57	$ 1.23	$ 1.3
Employee Stock Options [Member]
Earnings Per Share Reconciliation [Line Items]
Potentially dilutive securities	0	225	3	339
Restricted Stock Units [Member]
Earnings Per Share Reconciliation [Line Items]
Potentially dilutive securities	578	4	496	5