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Goodwill and Intangible Assets - Textual (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Goodwill [Line Items] |  |
Impairment loss | $ 0 | $ 0
Goodwill, impaired, accumulated impairment loss | 0 | 0
Impairment and other losses | 16,240 | 0
Amortization expense | 56,774 | $ 30,881
Integrated Agencies Network and Media Network |  |
Goodwill [Line Items] |  |
Impairment and other losses | $ 16,187 |
Weighted Average |  |
Goodwill [Line Items] |  |
Finite-lived intangible asset useful life | 10 years |
Customer Relationships |  |
Goodwill [Line Items] |  |
Finite-lived intangible asset useful life | 8 years |
Trademarks |  |
Goodwill [Line Items] |  |
Finite-lived intangible asset useful life | 11 years |
Noncompete Agreements |  |
Goodwill [Line Items] |  |
Finite-lived intangible asset useful life | 4 years |
Other Intangible Assets |  |
Goodwill [Line Items] |  |
Finite-lived intangible asset useful life | 2 years |

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2420-110228 + Details
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- Definition Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
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