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Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 | Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 404,688 | $ 226,471
Accumulated Amortization | 143,557 | 120,542
Net | $ 261,131 | $ 105,929
Domain Names |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Remaining Useful Life - Years | 10 months 24 days | 1 year 7 months 6 days
Gross Carrying Amount | $ 414 | $ 414
Accumulated Amortization | 344 | 283
Net | $ 70 | $ 131
Trademarks |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Remaining Useful Life - Years | 4 years 7 months 6 days |
Gross Carrying Amount | $ 21,384 |
Accumulated Amortization | 1,517 |
Net | $ 19,867 |
Technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Remaining Useful Life - Years | 3 years 8 months 12 days | 3 years 2 months 12 days
Gross Carrying Amount | $ 307,987 | $ 206,197
Accumulated Amortization | 127,150 | 111,129
Net | $ 180,837 | $ 95,068
Customer Relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Remaining Useful Life - Years | 5 years 3 months 18 days |
Gross Carrying Amount | $ 53,708 |
Accumulated Amortization | 3,665 |
Net | $ 50,043 |
Patents |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Remaining Useful Life - Years | 4 years 2 months 12 days | 4 years 10 months 24 days
Gross Carrying Amount | $ 21,195 | $ 19,860
Accumulated Amortization | 10,881 | 9,130
Net | $ 10,314 | $ 10,730

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + 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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- Definition Amount before 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 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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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