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Property and Equipment - Summary of Property and Equipment (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 91,019,909	$ 88,759,477
Less accumulated depreciation and amortization	(41,176,743)	(35,091,927)
Property and equipment, net	49,843,166	53,667,550
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	13,342,547	13,342,547
Buildings and improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	31,716,052	30,416,904
Broadcast Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	33,053,234	33,212,926
Transportation Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 2,294,487	2,269,019
Estimated useful lives (years)	5 years
Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 7,735,270	6,907,944
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 2,878,319	$ 2,610,137
Minimum [Member] | Buildings and improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (years)	15 years
Minimum [Member] | Broadcast Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (years)	5 years
Minimum [Member] | Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (years)	5 years
Maximum [Member] | Buildings and improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (years)	30 years
Maximum [Member] | Broadcast Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (years)	15 years
Maximum [Member] | Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives (years)	10 years

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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