Annual report pursuant to Section 13 and 15(d)

Property and Equipment - Summary of Categories of Property and Equipment (Detail)

v3.22.0.1
Property and Equipment - Summary of Categories of Property and Equipment (Detail) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross, Total $ 230,392 $ 226,523
Less accumulated depreciation (186,053) (180,336)
Property, Plant and Equipment Net 44,339 46,187
Property, Plant and Equipment, Net, Total 79,339 79,122
Land [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross, Total 26,896 30,254
Building [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross, Total 28,593 28,922
Office Furnishings and Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross, Total 36,598 36,875
Antennae, Towers and Transmitting Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross, Total 77,813 78,057
Studio, Production and Mobile Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross, Total 29,498 29,023
Computer Software and Website Development Costs [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross, Total 38,271 33,928
Record and Tape Libraries [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross, Total 0 17
Automobiles [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross, Total 1,515 1,514
Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross, Total 18,104 18,187
Construction in Progress [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross, Total $ 8,104 $ 2,681