Cash, Cash Equivalents, Restricted Cash And Cash Equivalent And Investments (Narrative) (Details) - Sovereign Debt Securities (Central Bank Of Brazil Mandatory Guarantee) [Member] - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and short term investments	$ 707,885	$ 709,954
Percent of electronic funds	100.00%	100.00%