Annual report pursuant to Section 13 and 15(d)

Broadcast Licenses - Schedule of Changes in Broadcasting Licenses (Detail)

v3.22.0.1
Broadcast Licenses - Schedule of Changes in Broadcasting Licenses (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Indefinite-lived Intangible Assets [Line Items]    
Balance, beginning of period before cumulative loss on impairment $ 434,209 $ 435,300
Accumulated loss on impairment, Beginning Balance (114,436) (97,442)
Balance, beginning of period after cumulative loss on impairment 319,773 337,858
Impairments based on the estimated fair value of broadcast licenses   (16,994)
Balance, end of period before cumulative loss on impairment 434,444 434,209
Accumulated loss on impairment, Ending Balance (114,436) (114,436)
Balance, end of period after cumulative loss on impairment 320,008 319,773
Radio Stations [Member]    
Indefinite-lived Intangible Assets [Line Items]    
Acquisitions of FM translators and construction permits $ 235  
Disposition of radio stations and FM translators   $ (1,091)