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Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($)
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Stock-based compensation $ 266,439 $ 584,574
Station Operating Expenses [Member]    
Stock-based compensation 130,120 123,147
Corporate General and Administrative Expenses [Member]    
Stock-based compensation $ 136,319 $ 461,427