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Other Intangibles - Summary of Other Intangibles Acquired (Detail) - USD ($) | Dec. 31, 2018 | Dec. 31, 2017
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Finite-Lived Intangible Assets [Line Items] |  |
Finite lived intangible assets | $ 3,103,530 | $ 1,639,530
Less accumulated amortization | (1,395,064) | (1,115,113)
Finite lived intangible assets net | 1,708,466 | 524,417
Other intangibles, net | 2,823,178 | 550,058
Advertiser Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite lived intangible assets | 2,819,879 | 1,355,879
Advertiser Lists [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite lived intangible assets | 16,251 | 16,251
Sports Program Rights [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite lived intangible assets | 267,400 | 267,400
Brand [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Indefinite lived intangible assets net | 1,085,888 | 0
Other Intangible Assets [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Indefinite lived intangible assets net | $ 28,824 | $ 25,641

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