Summary of Significant Accounting Policies - Additional Information (Details) $ in Thousands |
3 Months Ended | 9 Months Ended | 12 Months Ended |
|---|---|---|---|
|
Mar. 31, 2024
USD ($)
segment
|
Sep. 30, 2024
USD ($)
segment
|
Dec. 31, 2023
USD ($)
segment
|
|
| Goodwill [Line Items] | |||
| Number of reportable segments | segment | 2 | 2 | 3 |
| Goodwill balance, beginning of the period | $ 524,197 | $ 524,197 | |
| Acquisitions | 0 | ||
| Disposals | 0 | ||
| Currency translation adjustment | 2,372 | ||
| Impairments | 0 | ||
| Goodwill balance, end of the period | 526,569 | $ 524,197 | |
| Retail Media | |||
| Goodwill [Line Items] | |||
| Goodwill balance, beginning of the period | 149,680 | 149,680 | |
| Acquisitions | 0 | ||
| Disposals | 0 | ||
| Currency translation adjustment | 429 | ||
| Impairments | 0 | ||
| Goodwill balance, end of the period | 150,109 | 149,680 | |
| Performance Media | |||
| Goodwill [Line Items] | |||
| Goodwill balance, beginning of the period | $ 374,517 | 374,517 | |
| Acquisitions | 0 | ||
| Disposals | 0 | ||
| Currency translation adjustment | 1,943 | ||
| Impairments | 0 | ||
| Goodwill balance, end of the period | $ 376,460 | $ 374,517 |
| X | ||||||||||
- Definition Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of foreign currency translation gain (loss) which increases (decreases) asset representing future economic benefit from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of impairment loss from asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- 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. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of divestiture of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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