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Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items] |  |  |
Amortization Expense | $ 103,060 | $ 61,054 | $ 33,999
Goodwill, Impairment Loss | 116,714 |  |
Impairment and other losses | 122,179 | 16,240 | $ 0
Goodwill, Impaired, Accumulated Impairment Loss | 116,714 |  |
Restatement Adjustment |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Capitalized Computer Software, Gross | 29,844 |  |
Capitalized Computer Software, Accumulated Amortization | $ 8,757 |  |
Weighted Average |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 13 years |  |
Integrated Agencies Network and Brand Performance Network |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Impairment and other losses | $ 1,400 | $ 16,187 |
Customer Relationships |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 14 years |  |
Trademarks |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 12 years |  |
Other Intangible Assets |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 3 years |  |

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