Goodwill and Other Intangible Assets (Subsidiary) - Summary of Changes in Gross Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 2,288,805	$ 2,189,962
Goodwill acquired during the year		99,003
Purchase price adjustments and other	2	(160)
Goodwill, ending balance	2,288,807	2,288,805
LAMAR MEDIA CORP. AND SUBSIDIARIES
Goodwill [Roll Forward]
Goodwill, beginning balance	2,277,784	2,178,941
Goodwill acquired during the year		99,003
Purchase price adjustments and other	2	(160)
Goodwill, ending balance	$ 2,277,786	$ 2,277,784