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FCC Licenses - Carrying Amount of Broadcasting Licenses (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2022
Mar. 31, 2022
Sep. 30, 2022
FCC Licenses [Line Items]      
Beginning Balance   $ 508,413,913 $ 508,413,913
Station disposition (see Note 2) $ (790,232)   (790,232)
Impairment losses 0 $ (1.9) (4,619,772)
Ending Balance $ 503,003,909   $ 503,003,909