Description of the Business and Significant Accounting Policies - Revenue and Expense Recognized for Advertising Barter Transactions (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accounting Policies [Abstract]
Net revenues	$ 9,787	$ 9,599	$ 8,775
Direct advertising expenses	4,698	4,832	4,044
General and administrative expenses	$ 4,525	$ 4,044	$ 3,904

Amount included in general and administrative expenses related to barter transactions for the period.

No definition available.

Name:	lamr_AdvertisingBarterTransactionGeneralAndAdministrativeExpenses
Namespace Prefix:	lamr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration