Held for Sale, Discontinued Operations, and Disposals - Narrative (Details)			1 Months Ended	12 Months Ended
	Mar. 07, 2024 USD ($)	Feb. 21, 2024 USD ($)	Feb. 29, 2024 USD ($)	Dec. 31, 2023 USD ($) term	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal group, not discontinued operation, gain (loss) on disposal, statement of income extensible list not disclosed flag						recognized losses
Commerce Media Holdings, LLC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Transition services agreement, term				180 days
Transition services agreement, number of renewal terms | term				2
Transition services agreement, renewal term				90 days
Convertible Debt
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Aggregate principal amount							$ 150,000,000
Principal outstanding				$ 150,000,000	$ 150,000,000
Subsequent Event | Convertible Debt
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Repayments of long-term debt	$ 30,900,000
Debt instrument, required repayment percentage	0.206
Principal outstanding	$ 119,100,000
Subsequent Event | Revolving Credit Facility
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Repayments of long-term debt		$ 33,800,000
H u f f I n g t o n P o s t Italia S.R.L | H u f f I n g t o n P o s t Italia S.R.L
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership interest, parent (in percent)						51.00%
Recognized loss on disposition						$ 1,200,000
Discontinued Operations, Held-for-Sale or Disposed of by Sale | Complex Networks, Excluding The First We Feast Brand
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax benefit				0	(677,000)	$ (23,655,000)
Valuation allowance				$ 9,462,000	$ 0
Discontinued Operations, Held-for-Sale or Disposed of by Sale | Complex Networks, Excluding The First We Feast Brand | Subsequent Event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture of businesses		$ 108,600,000	$ 108,600,000