Quarterly report pursuant to Section 13 or 15(d)

Goodwill - Schedule of Changes in Goodwill (Detail)

v3.22.2.2
Goodwill - Schedule of Changes in Goodwill (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Goodwill [Line Items]          
Balance, beginning of period before cumulative loss on impairment     $ 28,749 $ 28,520 $ 28,520
Accumulated loss on impairment     (4,763) (4,763) (4,763)
Balance, beginning of period after cumulative loss on impairment     23,986 23,757 23,757
Loss on impairment $ 0 $ 0 (127) $ 0 0
Balance, end of period before cumulative loss on impairment 28,751   28,751   28,749
Accumulated loss on impairment (4,890)   (4,890)   (4,763)
Ending period balance $ 23,861   23,861   23,986
Radio Stations [Member]          
Goodwill [Line Items]          
Acquisitions         4
Digital Media [Member]          
Goodwill [Line Items]          
Acquisitions     $ 2   $ 225