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, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share Reconciliation [Line Items]
Net income	$ 68,229	$ 35,770	$ 14,055
Denominator for basic earnings per share – weighted-average number of common shares outstanding during the period	35,179	35,655	36,524
Denominator for diluted earnings per share	35,718	36,101	36,817
Basic	$ 1.94	$ 1.00	$ 0.38
Diluted	$ 1.91	$ 0.99	$ 0.38
Stock Options [Member]
Earnings Per Share Reconciliation [Line Items]
Incremental common shares attributable to exercise of dilutive options	17	39	36
Restricted Stock Units [Member]
Earnings Per Share Reconciliation [Line Items]
Incremental common shares attributable to exercise of dilutive options	522	407	257