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Property and Equipment - Summary of Property and Equipment (Detail) - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 96,258,320 $ 99,601,470
Less accumulated depreciation and amortization (53,156,999) (52,600,492)
Property and equipment, net 43,101,321 47,000,978
Land [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 12,074,390 13,110,390
Buildings and improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 34,577,369 37,353,496
Broadcast Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross 33,560,557 36,077,763
Transportation Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 2,142,391 1,996,366
Estimated useful lives (years) 5 years  
Office Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 11,287,765 10,067,711
Construction in Progress [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, gross $ 2,615,848 $ 995,744
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