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Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Apr. 04, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Goodwill [Line Items] |  |  |  |
Payments to Acquire Intangible Assets |  | $ 1,883 | $ 24,864 | $ 7,229
Other intangible assets |  | 823,589 | 823,500 |
Estimated amortization expense of intangible assets for 2021 |  | 54,900 |  |
Estimated amortization expense of intangible assets for 2022 |  | 49,700 |  |
Estimated amortization expense of intangible assets for 2023 |  | 44,000 |  |
Estimated amortization expense of intangible assets for 2024 |  | 42,700 |  |
Estimated amortization expense of intangible assets for 2025 |  | 41,000 |  |
Estimated amortization expense of intangible assets for later years |  | 386,300 |  |
Other intangible assets |  |  |  |
Goodwill [Line Items] |  |  |  |
Other intangible assets |  | 104,445 | 102,956 |
Series of Individually Immaterial Business Acquisitions |  |  |  |
Goodwill [Line Items] |  |  |  |
Payments to Acquire Intangible Assets | $ 23,600 |  |  |
Series of Individually Immaterial Business Acquisitions | Other intangible assets |  |  |  |
Goodwill [Line Items] |  |  |  |
Other intangible assets | 4,100 |  |  |
FCC licenses |  |  |  |
Goodwill [Line Items] |  |  |  |
Indefinite-lived intangible assets - FCC licenses |  | $ 356,815 | $ 385,915 |
FCC licenses | Series of Individually Immaterial Business Acquisitions |  |  |  |
Goodwill [Line Items] |  |  |  |
Indefinite-lived intangible assets - FCC licenses | $ 19,200 |  |  |

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- Definition Amount of amortization for asset, excluding financial asset and goodwill, lacking physical substance with finite life expected to be recognized after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References No definition available. + Details
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- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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