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Segment Information - Summary of Reportable Segment Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Segment Reporting Information [Line Items]      
Net revenue $ 241,426,308 $ 206,143,861  
Operating expenses 199,470,185 182,181,555  
Corporate expenses 16,578,046 15,628,370  
Depreciation and amortization 11,309,995 11,096,937  
Gain on dispositions (191,988) (4,439,710)  
Other operating (income) expense, net (400,000) (3,000,000)  
Operating income (loss) 14,660,070 (4,294,103)  
Capital expenditures 4,498,768 7,477,182  
Property and equipment, net 49,843,166 53,667,550  
FCC licenses 508,413,913 508,558,355 $ 517,529,167
Goodwill 28,596,547 28,596,547  
Other intangibles, net 22,697,207 $ 25,859,192  
Audio [Member]      
Segment Reporting Information [Line Items]      
Net revenue 206,460,883    
Operating expenses 163,639,369    
Depreciation and amortization 7,514,406    
Gain on dispositions (191,988)    
Other operating (income) expense, net 500,000    
Operating income (loss) 34,999,096    
Capital expenditures 4,409,592    
Property and equipment, net 45,696,008    
FCC licenses 508,413,913    
Goodwill 25,377,447    
Other intangibles, net 1,974,093    
Digital [Member]      
Segment Reporting Information [Line Items]      
Net revenue 32,743,850    
Operating expenses 32,355,572    
Depreciation and amortization 12,885    
Operating income (loss) 375,393    
Capital expenditures 87,432    
Property and equipment, net 74,547    
Other [Member]      
Segment Reporting Information [Line Items]      
Net revenue 2,221,575    
Operating expenses 3,475,244    
Depreciation and amortization 3,148,595    
Operating income (loss) (4,402,264)    
Capital expenditures 2,852    
Property and equipment, net 21,644    
Goodwill 3,219,100    
Other intangibles, net 20,543,451    
Corporate [Member]      
Segment Reporting Information [Line Items]      
Corporate expenses 16,578,046    
Depreciation and amortization 634,109    
Other operating (income) expense, net (900,000)    
Operating income (loss) (16,312,155)    
Capital expenditures (1,108)    
Property and equipment, net 4,050,967    
Other intangibles, net $ 179,663