Financial Instruments - Financial Assets and Credit Risk (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended |
---|---|---|
Mar. 31, 2021 |
Dec. 31, 2020 |
|
Concentration Risk [Line Items] | ||
Maximum exposure | $ 569,751 | $ 625,365 |
Trade receivables, net of allowances | ||
Concentration Risk [Line Items] | ||
Maximum exposure | 416,910 | 474,055 |
Other taxes | ||
Concentration Risk [Line Items] | ||
Maximum exposure | 69,692 | 69,987 |
Other current assets | ||
Concentration Risk [Line Items] | ||
Maximum exposure | 22,494 | 21,405 |
Non-current financial assets | ||
Concentration Risk [Line Items] | ||
Maximum exposure | 14,788 | 18,109 |
Marketable Securities | ||
Concentration Risk [Line Items] | ||
Maximum exposure | $ 45,867 | $ 41,809 |