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Basis of Presentation and Recent Developments (Details) £ in Thousands, $ in Thousands |  |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jul. 15, 2022 USD ($) | Jul. 12, 2022 USD ($) | Apr. 19, 2022 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Jul. 12, 2022 GBP (£) | Mar. 23, 2022 USD ($)
Reclassification [Line Items] |  |  |  |  |  |  |  |
Accrued media |  |  |  | $ 240,506 | $ 237,794 |  |  |
Defined Contribution Plan, Cost |  |  |  | $ 19,000 | 10,000 | $ 4,000 |  |
Stock Repurchase Program, Authorized Amount |  |  |  |  |  |  |  | $ 125,000
BNG |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Aggregate purchase price |  |  | $ 20,695 |  |  |  |  |
Estimated contingent consideration |  |  | $ 50,000 |  |  |  |  |
Contingent consideration payable in cash (percent) |  |  | 67.00% |  |  |  |  |
Contingent consideration payable in equity (percent) |  |  | 33.00% |  |  |  |  |
PEP Group |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Aggregate purchase price |  | $ 521 |  |  |  |  |  |
Estimated contingent consideration | £ |  |  |  |  |  |  | £ 2,553 |
Apollo |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Aggregate purchase price | $ 2,300 |  |  |  |  |  |  |
Payments to Acquire Business, First Payment | 1,000 |  |  |  |  |  |  |
Payments to Acquire Business, Second Payment | $ 1,500 |  |  |  |  |  |  |
Restatement Adjustment |  |  |  |  |  |  |  |
Reclassification [Line Items] |  |  |  |  |  |  |  |
Accrued media |  |  |  |  | $ 237,794 |  |  |

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