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Goodwill and Intangible Assets - Carrying Amounts of Amortizable Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Finite-lived Intangible Assets [Roll Forward] |  |
Gross cost, beginning balance | $ 1,279,386 | $ 1,301,120
Additions due to an acquisition | 19,500 |
Intangible assets fully amortized | (126,570) | (33,262)
Foreign currency translation impact | (4,306) | 11,528
Gross cost, ending balance | 1,168,010 | 1,279,386
Accumulated amortization | (453,592) | (472,388)
Finite-lived intangible assets, net | 714,418 | 806,998
Customer Relationships |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Gross cost, beginning balance | 1,154,210 | 1,145,109
Additions due to an acquisition | 7,980 |
Intangible assets fully amortized | (61,422) | (2,394)
Foreign currency translation impact | (4,410) | 11,495
Gross cost, ending balance | 1,096,358 | 1,154,210
Accumulated amortization | (413,266) | (381,776)
Finite-lived intangible assets, net | $ 683,092 | 772,434
Customer Relationships | Minimum |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Remaining amortization period | 6 years |
Customer Relationships | Maximum |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Remaining amortization period | 13 years |
Technology-related |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Gross cost, beginning balance | $ 110,597 | 111,033
Additions due to an acquisition | 11,200 |
Intangible assets fully amortized | (60,685) | (787)
Foreign currency translation impact | 104 | 351
Gross cost, ending balance | 61,216 | 110,597
Accumulated amortization | (35,727) | (83,320)
Finite-lived intangible assets, net | $ 25,489 | 27,277
Technology-related | Minimum |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Remaining amortization period | 3 years |
Technology-related | Maximum |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Remaining amortization period | 7 years |
Content |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Gross cost, beginning balance | $ 3,965 | 14,140
Additions due to an acquisition | 0 |
Intangible assets fully amortized | (3,965) | (9,929)
Foreign currency translation impact | 0 | (246)
Gross cost, ending balance | 0 | 3,965
Accumulated amortization | 0 | (3,595)
Finite-lived intangible assets, net | $ 0 | 370
Content | Minimum |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Remaining amortization period | 2 years |
Content | Maximum |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Remaining amortization period | 3 years |
Other |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Gross cost, beginning balance | $ 10,614 | 30,838
Additions due to an acquisition | 320 |
Intangible assets fully amortized | (498) | (20,152)
Foreign currency translation impact | 0 | (72)
Gross cost, ending balance | 10,436 | 10,614
Accumulated amortization | (4,599) | (3,697)
Finite-lived intangible assets, net | $ 5,837 | $ 6,917
Other | Minimum |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Remaining amortization period | 2 years |
Other | Maximum |  |
Finite-lived Intangible Assets [Roll Forward] |  |
Remaining amortization period | 11 years |

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- Definition Useful life of finite-lived intangible assets, 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 Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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