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, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations, net of tax	$ 6,813	$ 115,769	$ (16,465)
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	57,573	72,545
Total costs and expenses	(600)	(88,599)	(91,725)
Depreciation and amortization of intangible assets	0	(1,157)	(2,642)
Other, net	0	(174)	(57)
Loss from operations	(600)	(32,357)	(21,879)
Pretax gain on disposal	9,572	182,589	0
Gain (loss) from discontinued operations before income taxes	8,972	150,232	(21,879)
Income tax (provision) benefit	(2,159)	(34,463)	5,414
Income (loss) from discontinued operations, net of tax	$ 6,813	$ 115,769	$ (16,465)

Disposal Group, Including Discontinued Operation, Other Income (Expense)

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