Broadcast Licenses - Additional Information (Detail) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Mar. 31, 2020 |
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Indefinite-lived Intangible Assets [Line Items] | |||
| Impairment charge | $ 17,254 | $ 2,925 | |
| Broadcast Licenses [Member] | |||
| Indefinite-lived Intangible Assets [Line Items] | |||
| License renewable term | 8 years | ||
| Percentage of fair value over carrying value benchmark for qualitative impairment analysis | 25.00% | ||
| Impairment charge | $ 17,000 | ||
| Licensing Agreements [Member] | |||
| Indefinite-lived Intangible Assets [Line Items] | |||
| Finite-Lived Intangible Asset, Weighted Average Period before Next Renewal or Extension | 6 years 6 months | ||
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- Definition License renewal term. No definition available.
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- Definition Percentage of fair value over carrying value. No definition available.
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- Definition Weighted average period before the next renewal or extension (both explicit and implicit) for intangible assets that have been renewed or extended, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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