Assets Held for Sale and Discontinued Operations - Operating results of discontinued operations and net assets distributed (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations, net of tax	$ 0	$ 0	$ 6,813
Stitcher Podcasting Business | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Operating revenues	0
Total costs and expenses	(600)
Depreciation and amortization of intangible assets	0
Other, net	0
Loss from operations	(600)
Pretax gain on disposal	9,572
Gain from discontinued operations before income taxes	8,972
Provision for income taxes	(2,159)
Income from discontinued operations, net of tax	$ 6,813