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Summary of Significant Accounting Policies, Uncertain Tax Positions (Details) - Multiple Foreign and Domestic Authorities [Member] - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Reconciliation of Unrecognized Tax Benefits [Roll Forward] |  |  |
Gross balance at beginning of year | $ 13,507 | $ 11,456 | $ 5,514
Increases related to prior year tax positions | 2,958 | 775 | 5,161
Increases related to current year tax positions | 3,302 | 2,273 | 3,704
Settlements | (1,091) | 0 | (956)
Decreases due to lapse of statutes of limitations | (1,377) | (1,051) | (1,483)
Currency adjustments |  |  | (484)
Currency adjustments | 321 | 54 |
Gross balance at end of year | 17,620 | 13,507 | 11,456
Uncertain Tax Positions [Abstract] |  |  |
Unrecognized tax benefits that would impact effective tax rate | 17,600 | 13,500 |
Interest and penalties expenses/(benefits) | 1,500 | 700 | 1,300
Accrued interest and penalties | 5,100 | $ 3,600 | $ 2,900
Minimum [Member] |  |  |
Uncertain Tax Positions [Abstract] |  |  |
Estimated decrease in gross unrecognized tax benefits within next 12 months | 2,500 |  |
Maximum [Member] |  |  |
Uncertain Tax Positions [Abstract] |  |  |
Estimated decrease in gross unrecognized tax benefits within next 12 months | $ 3,500 |  |
Statute of limitations related to income tax examinations | 10 years |  |

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- Definition Statute of limitations period related to income tax examinations in certain countries, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(3) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 10B -URI http://asc.fasb.org/extlink&oid=120406818&loc=SL37586934-109318 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from foreign currency translation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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