Annual report pursuant to Section 13 and 15(d)

Broadcast Licenses - Results of Impairment Testing of Broadcast Licenses Under Income Approach (Detail)

v3.19.1
Broadcast Licenses - Results of Impairment Testing of Broadcast Licenses Under Income Approach (Detail)
 12 Months Ended
Dec. 31, 2018
Atlanta GA [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 21.20%
Cleveland OH [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate (3.80%)
Columbus OH City [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 25.40%
Dallas TX [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 45.90%
Denver CO [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 951.30%
Detroit MI [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 47.60%
Greenville SC [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 46.50%
Honolulu HI [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 131.10%
Houston TX [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 1070.40%
Little Rock [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 21.00%
Los Angeles CA [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 102.60%
Louisville KY [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate (11.20%)
Nashville TN [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 675.10%
New York Ny [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 35.40%
Philadelphia PA [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 9.70%
Phoenix AZ [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 51.00%
Pittsburgh PA [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 292.70%
Portland OR [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate (3.90%)
Sacramento CA [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 3.10%
San Antonio TX [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 63.10%
San Diego CA [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 47.20%
San Francisco CA [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 2.60%
Seattle WA [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 597.40%
St Louis [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 329.50%
Tampa FL [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 12.50%
Washington D.C. [Member]  
Goodwill And Other Intangible Assets [Line Items]  
Excess fair value estimate 164.90%