Quarterly report pursuant to Section 13 or 15(d)

Goodwill - Schedule of Changes in Goodwill (Detail)

v3.22.1
Goodwill - Schedule of Changes in Goodwill (Detail) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Goodwill [Line Items]    
Balance, beginning of period before cumulative loss on impairment $ 28,749 $ 28,520
Accumulated loss on impairment (4,763) (4,763)
Balance, beginning of period after cumulative loss on impairment 23,986 23,757
Balance, end of period before cumulative loss on impairment 28,749 28,749
Accumulated loss on impairment (4,763) (4,763)
Ending period balance 23,986 23,986
Radio Stations [Member]    
Goodwill [Line Items]    
Acquisitions 0 4
Digital Media [Member]    
Goodwill [Line Items]    
Acquisitions $ 0 $ 225