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