Broadcast Licenses - Schedule of Changes in Broadcasting Licenses (Detail) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2021 |
Dec. 31, 2020 |
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| Indefinite-lived Intangible Assets [Line Items] | ||
| Balance, beginning of period before cumulative loss on impairment | $ 440,052 | $ 441,143 |
| Accumulated loss on impairment, Beginning Balance | (120,279) | (103,285) |
| Balance, beginning of period after cumulative loss on impairment | 319,773 | 337,858 |
| Disposition of radio stations and FM translators | 0 | (1,091) |
| Impairments based on the estimated fair value of broadcast licenses | 0 | (16,994) |
| Balance, end of period before cumulative loss on impairment | 440,052 | 440,052 |
| Accumulated loss on impairment, Ending Balance | (120,279) | (120,279) |
| Balance, end of period after cumulative loss on impairment | $ 319,773 | $ 319,773 |
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- Definition Gross amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the capitalized costs to acquire rights under a license arrangement (for example, to sell specified products in a specified territory) having an indefinite period of benefit. No definition available.
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- Definition Amount of accumulated impairment loss for an indefinite intangible asset representing future economic benefits arising from other assets acquired under a license agreement that are not individually identified and separately recognized. No definition available.
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- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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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- Definition Amount of divestiture of an asset lacking physical substance and having a projected indefinite period of benefit to fair value. Excludes financial assets and goodwill. No definition available.
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- Definition Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the capitalized costs to acquire rights under a license arrangement (for example, to sell specified products in a specified territory) having an indefinite period of benefit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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