Other Current and Long-Term Assets (Schedule Of Other Long-term Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Other Assets, Noncurrent [Abstract]
Contract assets, net	$ 157,821	$ 148,971
Customer acquisition costs	110,131	107,205
Deferred income taxes	65,337	55,215
Equity investments	30,250	30,250
Investment in long-term product supply arrangements	25,141	25,250
Deferred sales commissions	12,901	12,718
Taxes receivable	1,548	717
Other assets	36,096	37,403
Other long-term assets	$ 439,225	$ 417,729