Recent Transactions - Divestitures - Additional Information (Detail) - W A [Member] - USD ($) $ in Millions  | 
Jul. 21, 2023  | 
Jul. 13, 2023  | 
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| KNTS-AM Seattle [Member] | ||
| Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] | ||
| Disposal group including discontinued operation consideration | $ 0.2 | |
| Gain (loss) on discontinued operatiions from disposal pre tax value | $ 0.2 | |
| KLFE-AM Seattle [Member] | ||
| Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items] | ||
| Disposal group including discontinued operation consideration | $ 0.5 | |
| Gain (loss) on discontinued operatiions from disposal pre tax value | $ 0.2 | 
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation. No definition available. 
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