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
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share Reconciliation [Line Items]
Net income	$ 14,002	$ 12,360
Denominator for basic earnings per share	35,810	35,336
Denominator for diluted earnings per share	36,401	35,592
Earnings per share:
Basic	$ 0.39	$ 0.35
Diluted	$ 0.38	$ 0.35
Employee Stock Options [Member]
Earnings Per Share Reconciliation [Line Items]
Potentially dilutive securities	5	6
Restricted Stock Units [Member]
Earnings Per Share Reconciliation [Line Items]
Potentially dilutive securities	586	250