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Acquisitions and Dispositions - Schedule of Purchase Price Allocation (Detail) - USD ($) | Dec. 31, 2020 | Dec. 31, 2019
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Business Acquisition [Line Items] |  |
Property and equipment | $ 432,588 |
FCC licenses | 12,891,117 | $ 13,155,601
Other intangibles | 176,295 |
Net assets acquired | $ 13,500,000 |

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