Distribution Restrictions (Detail) $ in Thousands	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Balance of permitted transfers to parent company	$ 3,959,823	$ 3,921,979
Debt ratio	7.0
Debt ratio related to actual position on senior credit facility	7.0
Available cumulative credit	$ 2,710,302
Secured Debt | Maximum
Debt Instrument [Line Items]
Secured debt ratio	4.5
Secured Debt | Maximum | LAMAR MEDIA CORP
Debt Instrument [Line Items]
Secured debt ratio	4.5