Other Current and Long-Term Assets (Schedule Of Other Current Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Other Assets, Noncurrent [Abstract]
Customer acquisition costs	$ 49,834	$ 48,942
Contract assets, net	42,255	37,772
Prepaid expenses	39,696	41,997
Taxes receivable	22,570	19,464
Foreign currency exchange contracts	22,331	6,512
Cross currency swap contracts	15,994	0
Deferred sales commissions	6,438	6,475
Other assets	17,518	12,661
Other current assets	$ 216,636	$ 173,823