Summary of Significant Accounting Policies (Schedule Of Calculation Of Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Earnings Per Share Reconciliation [Line Items]
Net Income (Loss)	$ 63,327	$ 64,315	$ 68,229
Denominator for basic earnings per share	35,970	35,566	35,179
Denominator for diluted earnings per share	36,759	35,973	35,718
Earnings per share:
Basic	$ 1.76	$ 1.81	$ 1.94
Diluted	$ 1.72	$ 1.79	$ 1.91
Employee Stock Option [Member]
Earnings Per Share Reconciliation [Line Items]
Incremental common shares attributable to exercise of dilutive options	3	4	17
Restricted Stock Units [Member]
Earnings Per Share Reconciliation [Line Items]
Incremental common shares attributable to exercise of dilutive options	786	403	522