Summarized Financial Information of Subsidiaries - Condensed Consolidating Statement of Cash Flows (Unaudited) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net cash provided by (used in) operating activities	$ 108,712	$ 102,038
Cash flows from investing activities:
Acquisitions	(13,627)	(55,293)
Capital expenditures	(42,285)	(28,759)
Proceeds from disposition of assets and investments	3,248	710
Net cash (used in) provided by investing activities	(52,664)	(83,342)
Cash flows from financing activities:
Proceeds received from revolving credit facility	90,000	165,000
Payments on revolving credit facility	(20,000)	(50,000)
Principal payments on long-term debt	(93)	(92)
Principal payments on financing leases	(333)	(333)
Payments on accounts receivable securitization program	(25,000)	0
Proceeds received from accounts receivable securitization program	9,800	0
Debt issuance costs	(25)	0
Distributions to non-controlling interest	(214)	(46)
Net cash used in financing activities	(75,155)	(2,713)
Effect of exchange rate changes in cash and cash equivalents	10	107
Net (decrease) increase in cash and cash equivalents	(19,097)	16,090
Cash and cash equivalents at beginning of period	52,619	99,788
Cash and cash equivalents at end of period	33,522	115,878
LAMAR MEDIA CORP. AND SUBSIDIARIES
Cash flows from operating activities:
Net cash provided by (used in) operating activities	89,381	70,396
Cash flows from investing activities:
Acquisitions	(13,627)	(55,293)
Capital expenditures	(42,285)	(28,759)
Proceeds from disposition of assets and investments	3,248	710
Investment in subsidiaries	0	0
(Increase) decrease in intercompany notes receivable	0	0
Net cash (used in) provided by investing activities	(52,664)	(83,342)
Cash flows from financing activities:
Proceeds received from revolving credit facility	90,000	165,000
Payments on revolving credit facility	(20,000)	(50,000)
Principal payments on long-term debt	(93)	(92)
Principal payments on financing leases	(333)	(333)
Payments on accounts receivable securitization program	(25,000)
Proceeds received from accounts receivable securitization program	9,800
Debt issuance costs	(25)
Intercompany loan (payments) proceeds	0	0
Distributions to non-controlling interest	(214)	(46)
Dividends (to) from parent	(133,406)	(122,047)
Contributions from (to) parent	23,447	36,447
Net cash used in financing activities	(55,824)	28,929
Effect of exchange rate changes in cash and cash equivalents	10	107
Net (decrease) increase in cash and cash equivalents	(19,097)	16,090
Cash and cash equivalents at beginning of period	52,119	99,288
Cash and cash equivalents at end of period	33,022	115,378
Eliminations | LAMAR MEDIA CORP. AND SUBSIDIARIES
Cash flows from operating activities:
Net cash provided by (used in) operating activities	(81,100)	(69,036)
Cash flows from investing activities:
Acquisitions	0	0
Capital expenditures	0	0
Proceeds from disposition of assets and investments	0	0
Investment in subsidiaries	13,627	55,293
(Increase) decrease in intercompany notes receivable	17,895	6,090
Net cash (used in) provided by investing activities	31,522	61,383
Cash flows from financing activities:
Proceeds received from revolving credit facility	0	0
Payments on revolving credit facility	0	0
Principal payments on long-term debt	0	0
Principal payments on financing leases	0	0
Payments on accounts receivable securitization program	0
Proceeds received from accounts receivable securitization program	0
Debt issuance costs	0
Intercompany loan (payments) proceeds	(17,895)	(6,090)
Distributions to non-controlling interest	0	0
Dividends (to) from parent	81,100	69,036
Contributions from (to) parent	(13,627)	(55,293)
Net cash used in financing activities	49,578	7,653
Effect of exchange rate changes in cash and cash equivalents	0	0
Net (decrease) increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Lamar Media Corp. | Reportable Legal Entities | LAMAR MEDIA CORP. AND SUBSIDIARIES
Cash flows from operating activities:
Net cash provided by (used in) operating activities	56,096	44,116
Cash flows from investing activities:
Acquisitions	0	0
Capital expenditures	0	0
Proceeds from disposition of assets and investments	0	0
Investment in subsidiaries	(13,627)	(55,293)
(Increase) decrease in intercompany notes receivable	(17,895)	(6,090)
Net cash (used in) provided by investing activities	(31,522)	(61,383)
Cash flows from financing activities:
Proceeds received from revolving credit facility	90,000	165,000
Payments on revolving credit facility	(20,000)	(50,000)
Principal payments on long-term debt	0	0
Principal payments on financing leases	0	0
Payments on accounts receivable securitization program	0
Proceeds received from accounts receivable securitization program	0
Debt issuance costs	0
Intercompany loan (payments) proceeds	0	0
Distributions to non-controlling interest	0	0
Dividends (to) from parent	(133,406)	(122,047)
Contributions from (to) parent	23,447	36,447
Net cash used in financing activities	(39,959)	29,400
Effect of exchange rate changes in cash and cash equivalents	0	0
Net (decrease) increase in cash and cash equivalents	(15,385)	12,133
Cash and cash equivalents at beginning of period	39,729	91,023
Cash and cash equivalents at end of period	24,344	103,156
Guarantor Subsidiaries | Reportable Legal Entities | LAMAR MEDIA CORP. AND SUBSIDIARIES
Cash flows from operating activities:
Net cash provided by (used in) operating activities	100,431	97,816
Cash flows from investing activities:
Acquisitions	(13,627)	(55,293)
Capital expenditures	(40,952)	(27,851)
Proceeds from disposition of assets and investments	3,248	710
Investment in subsidiaries	0	0
(Increase) decrease in intercompany notes receivable	0	0
Net cash (used in) provided by investing activities	(51,331)	(82,434)
Cash flows from financing activities:
Proceeds received from revolving credit facility	0	0
Payments on revolving credit facility	0	0
Principal payments on long-term debt	(93)	(92)
Principal payments on financing leases	(333)	(333)
Payments on accounts receivable securitization program	0
Proceeds received from accounts receivable securitization program	0
Debt issuance costs	0
Intercompany loan (payments) proceeds	18,499	94
Distributions to non-controlling interest	(110)	0
Dividends (to) from parent	(81,100)	(69,036)
Contributions from (to) parent	13,627	55,293
Net cash used in financing activities	(49,510)	(14,074)
Effect of exchange rate changes in cash and cash equivalents	0	0
Net (decrease) increase in cash and cash equivalents	(410)	1,308
Cash and cash equivalents at beginning of period	1,285	3,494
Cash and cash equivalents at end of period	875	4,802
Non- Guarantor Subsidiaries | Reportable Legal Entities | LAMAR MEDIA CORP. AND SUBSIDIARIES
Cash flows from operating activities:
Net cash provided by (used in) operating activities	13,954	(2,500)
Cash flows from investing activities:
Acquisitions	0	0
Capital expenditures	(1,333)	(908)
Proceeds from disposition of assets and investments	0	0
Investment in subsidiaries	0	0
(Increase) decrease in intercompany notes receivable	0	0
Net cash (used in) provided by investing activities	(1,333)	(908)
Cash flows from financing activities:
Proceeds received from revolving credit facility	0	0
Payments on revolving credit facility	0	0
Principal payments on long-term debt	0	0
Principal payments on financing leases	0	0
Payments on accounts receivable securitization program	(25,000)
Proceeds received from accounts receivable securitization program	9,800
Debt issuance costs	(25)
Intercompany loan (payments) proceeds	(604)	5,996
Distributions to non-controlling interest	(104)	(46)
Dividends (to) from parent	0	0
Contributions from (to) parent	0	0
Net cash used in financing activities	(15,933)	5,950
Effect of exchange rate changes in cash and cash equivalents	10	107
Net (decrease) increase in cash and cash equivalents	(3,302)	2,649
Cash and cash equivalents at beginning of period	11,105	4,771
Cash and cash equivalents at end of period	$ 7,803	$ 7,420