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v3.22.2.2

Goodwill and Intangible Assets (Narrative) (Details) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2022 USD ($) reportingUnit | Sep. 30, 2021 USD ($) | Sep. 30, 2022 USD ($) reportingUnit | Sep. 30, 2021 USD ($) | Dec. 31, 2021 USD ($)
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Goodwill impairment on business | $ 27,369 | $ 0 | $ 27,369 | $ 32,629 |
Goodwill | 1,579,957 |  | 1,579,957 |  | $ 1,531,455
Amortization expense | 36,300 | $ 46,600 | $ 119,300 | $ 140,700 |
Digital Media |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Number of reporting units | reportingUnit |  |  | 7 |  |
Goodwill impairment on business |  |  | $ 27,400 |  | 0
Cybersecurity and Martech |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Number of reporting units | reportingUnit |  |  | 2 |  |
Goodwill impairment on business |  |  | $ 32,600 |  | 32,600
Operating Segments | Digital Media |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Goodwill impairment on business | 27,400 |  | 27,369 |  |
Goodwill | $ 1,062,108 |  | 1,062,108 |  | 996,659
Operating Segments | Digital Media | Digital Media Subsegment |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Number of reporting units | reportingUnit | 2 |  |  |  |
Goodwill | $ 86,900 |  | 86,900 |  |
Operating Segments | Cybersecurity and Martech |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Goodwill impairment on business |  |  | 0 |  |
Goodwill | $ 517,849 |  | $ 517,849 |  | $ 534,796
Minimum |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Finite-lived intangible asset, useful life |  |  | 1 year |  |
Maximum |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Finite-lived intangible asset, useful life |  |  | 20 years |  |

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