Other Current and Long-Term Assets (Schedule Of Other Current Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Other Assets, Noncurrent [Abstract]
Customer acquisition costs	$ 49,657	$ 48,942
Contract assets, net	40,364	37,772
Prepaid expenses	36,287	41,997
Taxes receivable	19,854	19,464
Foreign currency exchange contracts	14,863	6,512
Deferred sales commissions	6,504	6,475
Other assets	15,471	12,661
Other current assets	$ 183,000	$ 173,823