Subsequent Event - Additional Information (Detail) - ION Media Stations, Inc. - KMCC-TV - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Jan. 22, 2020
Subsequent Event [Line Items]
Consideration from sale of television station		$ 4.0
Discontinued operation, description	On January 22, 2020, the Company entered into an agreement with ION Media Stations, Inc. to sell television station KMCC-TV, serving the Las Vegas area, for $4.0 million.

Description of the facts and circumstances leading to the completed or expected disposal, and the manner and timing of that disposal.

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