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Goodwill and Intangible Assets - Finite Lived Intangibles Acquired (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Trade names |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Amortization Period | 9 years 8 months 12 days | 10 years
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Amortization Period | 8 years 1 month 6 days | 8 years
Other purchased intangibles |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Amortization Period | 9 years 3 months 18 days | 9 years 8 months 12 days
SEOmoz Acquisition |  |
Finite-Lived Intangible Assets [Line Items] |  |
Fair Value | $ 35,183 |
SEOmoz Acquisition | Trade names |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Amortization Period | 5 years |
Fair Value | $ 7,406 |
SEOmoz Acquisition | Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Amortization Period | 5 years 2 months 12 days |
Fair Value | $ 5,000 |
SEOmoz Acquisition | Other purchased intangibles |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Amortization Period | 5 years |
Fair Value | $ 22,777 |
Fiscal 2020 Acquisitions |  |
Finite-Lived Intangible Assets [Line Items] |  |
Fair Value | $ 42,005 |
Fiscal 2020 Acquisitions | Trade names |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Amortization Period | 3 years 8 months 12 days |
Fair Value | $ 8,943 |
Fiscal 2020 Acquisitions | Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Amortization Period | 6 years 9 months 18 days |
Fair Value | $ 16,945 |
Fiscal 2020 Acquisitions | Other purchased intangibles |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted-Average Amortization Period | 3 years 7 months 6 days |
Fair Value | $ 16,117 |

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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 Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Details
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