Quarterly report pursuant to Section 13 or 15(d)

Recent Transactions - Pending Transactions -Additional Information (Detail)

v3.21.2
Recent Transactions - Pending Transactions -Additional Information (Detail) - USD ($)
$ in Millions
Apr. 10, 2021
Jun. 07, 2021
Jun. 02, 2021
Radio station KSKY-AM [Member]      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]      
Proceeds from sale of real estate $ 12.1    
Radio Station KKOL In Seattle [Member]      
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]      
Escrow Deposit   $ 0.1  
Payable for asset acquistion     $ 0.5