Condensed Consolidating Statement of Cash Flows (Unaudited) (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net cash provided by (used in) operating activities	$ 312,630	$ 285,257
Cash flows from investing activities:
Acquisitions	(234,292)	(27,236)
Capital expenditures	(75,802)	(41,416)
Proceeds from disposition of assets and investments	1,716	3,982
Net cash (used in) provided by investing activities	(308,378)	(64,670)
Cash flows from financing activities:
Proceeds received from revolving credit facility	400,000	25,000
Payments on revolving credit facility	(240,000)	(25,000)
Principal payments on long-term debt	(182)	(190)
Principal payments on financing leases	(666)	(666)
Proceeds received from note offering	0	550,000
Redemption of senior notes	0	(668,688)
Payments on accounts receivable securitization program	0	(32,500)
Proceeds received from accounts receivable securitization program	65,000	32,500
Debt issuance costs	(200)	(8,498)
Distributions to non-controlling interest	(98)	(49)
Net cash used in financing activities	(12,283)	(273,643)
Effect of exchange rate changes in cash and cash equivalents	(71)	213
Net decrease in cash and cash equivalents	(8,102)	(52,843)
Cash and cash equivalents at beginning of period	99,788	121,569
Cash and cash equivalents at end of period	91,686	68,726
LAMAR MEDIA CORP. AND SUBSIDIARIES
Cash flows from operating activities:
Net cash provided by (used in) operating activities	279,320	269,129
Cash flows from investing activities:
Acquisitions	(234,292)	(27,236)
Capital expenditures	(75,802)	(41,416)
Proceeds from disposition of assets and investments	1,716	3,982
Investment in subsidiaries	0	0
Decrease (increase) in intercompany notes receivable	0	0
Net cash (used in) provided by investing activities	(308,378)	(64,670)
Cash flows from financing activities:
Proceeds received from revolving credit facility	400,000	25,000
Payments on revolving credit facility	(240,000)	(25,000)
Principal payments on long-term debt	(182)	(190)
Principal payments on financing leases	(666)	(666)
Proceeds received from note offering		550,000
Redemption of senior notes		(668,688)
Payments on accounts receivable securitization program		(32,500)
Proceeds received from accounts receivable securitization program	65,000	32,500
Debt issuance costs	(200)	(8,498)
Intercompany loan (payments) proceeds	0	0
Distributions to non-controlling interest	(98)	(49)
Dividends (to) from parent	(243,856)	(157,409)
Contributions from (to) parent	41,029	27,985
Net cash used in financing activities	21,027	(257,515)
Effect of exchange rate changes in cash and cash equivalents	(71)	213
Net decrease in cash and cash equivalents	(8,102)	(52,843)
Cash and cash equivalents at beginning of period	99,288	121,069
Cash and cash equivalents at end of period	91,186	68,226
Eliminations | LAMAR MEDIA CORP. AND SUBSIDIARIES
Cash flows from operating activities:
Net cash provided by (used in) operating activities	(253,565)	(293,942)
Cash flows from investing activities:
Acquisitions	0	0
Capital expenditures	0	0
Proceeds from disposition of assets and investments	0	0
Investment in subsidiaries	234,292	27,236
Decrease (increase) in intercompany notes receivable	(56,117)	(1,562)
Net cash (used in) provided by investing activities	178,175	25,674
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
Proceeds received from note offering		0
Redemption of senior notes		0
Payments on accounts receivable securitization program		0
Proceeds received from accounts receivable securitization program	0	0
Debt issuance costs	0	0
Intercompany loan (payments) proceeds	56,117	1,562
Distributions to non-controlling interest	0	0
Dividends (to) from parent	253,565	294,691
Contributions from (to) parent	(234,292)	(27,985)
Net cash used in financing activities	75,390	268,268
Effect of exchange rate changes in cash and cash equivalents	0	0
Net decrease 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	201,763	232,261
Cash flows from investing activities:
Acquisitions	0	0
Capital expenditures	0	0
Proceeds from disposition of assets and investments	0	0
Investment in subsidiaries	(234,292)	(27,236)
Decrease (increase) in intercompany notes receivable	56,117	1,562
Net cash (used in) provided by investing activities	(178,175)	(25,674)
Cash flows from financing activities:
Proceeds received from revolving credit facility	400,000	25,000
Payments on revolving credit facility	(240,000)	(25,000)
Principal payments on long-term debt	0	0
Principal payments on financing leases	0	0
Proceeds received from note offering		550,000
Redemption of senior notes		(668,688)
Payments on accounts receivable securitization program		0
Proceeds received from accounts receivable securitization program	0	0
Debt issuance costs	0	(8,063)
Intercompany loan (payments) proceeds	0	0
Distributions to non-controlling interest	0	0
Dividends (to) from parent	(243,856)	(157,409)
Contributions from (to) parent	41,029	27,985
Net cash used in financing activities	(42,827)	(256,175)
Effect of exchange rate changes in cash and cash equivalents	0	0
Net decrease in cash and cash equivalents	(19,239)	(49,588)
Cash and cash equivalents at beginning of period	91,023	110,588
Cash and cash equivalents at end of period	71,784	61,000
Guarantor Subsidiaries | Reportable Legal Entities | LAMAR MEDIA CORP. AND SUBSIDIARIES
Cash flows from operating activities:
Net cash provided by (used in) operating activities	364,272	346,732
Cash flows from investing activities:
Acquisitions	(234,292)	(27,236)
Capital expenditures	(73,562)	(38,908)
Proceeds from disposition of assets and investments	1,716	3,982
Investment in subsidiaries	0	0
Decrease (increase) in intercompany notes receivable	0	0
Net cash (used in) provided by investing activities	(306,138)	(62,162)
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	(182)	(190)
Principal payments on financing leases	(666)	(666)
Proceeds received from note offering		0
Redemption of senior notes		0
Payments on accounts receivable securitization program		0
Proceeds received from accounts receivable securitization program	0	0
Debt issuance costs	0	0
Intercompany loan (payments) proceeds	(33,387)	(15,826)
Distributions to non-controlling interest	0	0
Dividends (to) from parent	(253,565)	(294,691)
Contributions from (to) parent	234,292	27,985
Net cash used in financing activities	(53,508)	(283,388)
Effect of exchange rate changes in cash and cash equivalents	0	0
Net decrease in cash and cash equivalents	4,626	1,182
Cash and cash equivalents at beginning of period	3,494	1,732
Cash and cash equivalents at end of period	8,120	2,914
Non- Guarantor Subsidiaries | Reportable Legal Entities | LAMAR MEDIA CORP. AND SUBSIDIARIES
Cash flows from operating activities:
Net cash provided by (used in) operating activities	(33,150)	(15,922)
Cash flows from investing activities:
Acquisitions	0	0
Capital expenditures	(2,240)	(2,508)
Proceeds from disposition of assets and investments	0	0
Investment in subsidiaries	0	0
Decrease (increase) in intercompany notes receivable	0	0
Net cash (used in) provided by investing activities	(2,240)	(2,508)
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
Proceeds received from note offering		0
Redemption of senior notes		0
Payments on accounts receivable securitization program		(32,500)
Proceeds received from accounts receivable securitization program	65,000	32,500
Debt issuance costs	(200)	(435)
Intercompany loan (payments) proceeds	(22,730)	14,264
Distributions to non-controlling interest	(98)	(49)
Dividends (to) from parent	0	0
Contributions from (to) parent	0	0
Net cash used in financing activities	41,972	13,780
Effect of exchange rate changes in cash and cash equivalents	(71)	213
Net decrease in cash and cash equivalents	6,511	(4,437)
Cash and cash equivalents at beginning of period	4,771	8,749
Cash and cash equivalents at end of period	$ 11,282	$ 4,312