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		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Earnings Per Share Reconciliation [Line Items]
Net income	$ 972	$ 15,528	$ 4,616	$ 29,530
Denominator for basic earnings per share	35,991	36,047	36,021	35,929
Denominator for diluted earnings per share	36,258	36,497	36,427	36,388
Earnings per share:
Basic	$ 0.03	$ 0.43	$ 0.13	$ 0.82
Diluted	$ 0.03	$ 0.43	$ 0.13	$ 0.81
Restricted Stock Units [Member]
Earnings Per Share Reconciliation [Line Items]
Potentially dilutive securities	267	448	406	455
Employee Stock Options [Member]
Earnings Per Share Reconciliation [Line Items]
Potentially dilutive securities	0	2	0	4