Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	LAMAR MEDIA CORP. AND SUBSIDIARIES	Preferred Stock Series A A Preferred Stock	Common Stock Common Class A	Common Stock Common Class B	Treasury Stock	Add’l Paid in Capital	Add’l Paid in Capital LAMAR MEDIA CORP. AND SUBSIDIARIES	Accumulated Comprehensive Income (Loss)	Accumulated Comprehensive Income (Loss) LAMAR MEDIA CORP. AND SUBSIDIARIES	Accumulated Deficit	Accumulated Deficit LAMAR MEDIA CORP. AND SUBSIDIARIES
Beginning Balance at Dec. 31, 2019	$ 1,180,306	$ 1,169,531	$ 0	$ 87	$ 14	$ (34,294)	$ 1,922,222	$ 2,992,729	$ 685	$ 685	$ (708,408)	$ (1,823,883)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contribution from parent		29,429						29,429
Foreign currency translations		(1,598)								(1,598)
Non-cash compensation	1,261						1,261
Issuance of common stock through stock awards	24,956						24,956
Exercise of stock options	652						652
Issuance of common stock through employee purchase plan	2,560						2,560
Purchase of treasury stock	(10,068)					(10,068)
Foreign currency translation	(1,598)								(1,598)
Net income	40,493	40,617									40,493	40,617
Dividend to parent		(110,755)										(110,755)
Dividends/distributions to common shareholders	(100,687)										(100,687)
Dividends	(91)										(91)
Ending Balance at Mar. 31, 2020	1,137,784	1,127,224	0	87	14	(44,362)	1,951,651	3,022,158	(913)	(913)	(768,693)	(1,894,021)
Beginning Balance at Dec. 31, 2019	1,180,306	1,169,531	0	87	14	(34,294)	1,922,222	2,992,729	685	685	(708,408)	(1,823,883)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Foreign currency translations		(528)
Foreign currency translation	(528)
Net income	134,680	135,046
Ending Balance at Sep. 30, 2020	1,139,053	1,128,917	0	87	14	(44,418)	1,958,713	3,029,221	157	157	(775,500)	(1,900,461)
Beginning Balance at Mar. 31, 2020	1,137,784	1,127,224	0	87	14	(44,362)	1,951,651	3,022,158	(913)	(913)	(768,693)	(1,894,021)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contribution from parent		3,962						3,962
Foreign currency translations		740								740
Non-cash compensation	916						916
Issuance of common stock through stock awards	609						609
Exercise of stock options	671						671
Issuance of common stock through employee purchase plan	1,765						1,765
Purchase of treasury stock	(56)					(56)
Foreign currency translation	740								740
Net income	31,429	31,534									31,429	31,534
Dividend to parent		(50,453)										(50,453)
Dividends/distributions to common shareholders	(50,396)										(50,396)
Dividends	(91)										(91)
Ending Balance at Jun. 30, 2020	1,123,371	1,113,007	0	87	14	(44,418)	1,955,612	3,026,120	(173)	(173)	(787,751)	(1,912,940)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contribution from parent		3,101						3,101
Foreign currency translations		330								330
Non-cash compensation	1,011						1,011
Exercise of stock options	307						307
Issuance of common stock through employee purchase plan	1,783						1,783
Foreign currency translation	330								330
Net income	62,758	62,895									62,758	62,895
Dividend to parent		(50,416)										(50,416)
Dividends/distributions to common shareholders	(50,416)										(50,416)
Dividends	(91)										(91)
Ending Balance at Sep. 30, 2020	1,139,053	1,128,917	0	87	14	(44,418)	1,958,713	3,029,221	157	157	(775,500)	(1,900,461)
Beginning Balance at Dec. 31, 2020	1,202,768	1,192,844	0	87	14	(44,786)	1,963,850	3,034,357	934	934	(717,331)	(1,842,447)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contribution from parent		21,831						21,831
Foreign currency translations		204								204
Non-cash compensation	1,060						1,060
Issuance of common stock through stock awards	13,376						13,376
Exercise of stock options	5,224						5,224
Issuance of common stock through employee purchase plan	2,172						2,172
Purchase of treasury stock	(5,717)					(5,717)
Foreign currency translation	204								204
Net income	38,329	38,466									38,329	38,466
Dividend to parent		(81,535)										(81,535)
Dividends/distributions to common shareholders	(75,818)										(75,818)
Dividends	(91)										(91)
Ending Balance at Mar. 31, 2021	1,181,507	1,171,810	0	87	14	(50,503)	1,985,682	3,056,188	1,138	1,138	(754,911)	(1,885,516)
Beginning Balance at Dec. 31, 2020	1,202,768	1,192,844	0	87	14	(44,786)	1,963,850	3,034,357	934	934	(717,331)	(1,842,447)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Foreign currency translations		(84)
Foreign currency translation	(84)
Net income	264,776	265,473
Ending Balance at Sep. 30, 2021	1,241,796	1,232,842	0	88	14	(50,573)	1,997,162	3,067,669	850	850	(705,745)	(1,835,677)
Beginning Balance at Mar. 31, 2021	1,181,507	1,171,810	0	87	14	(50,503)	1,985,682	3,056,188	1,138	1,138	(754,911)	(1,885,516)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contribution from parent		6,154						6,154
Foreign currency translations		300								300
Non-cash compensation	917						917
Issuance of common stock through stock awards	594						594
Exercise of stock options	2,575						2,575
Issuance of common stock through employee purchase plan	2,068						2,068
Foreign currency translation	300								300
Net income	119,609	120,033									119,609	120,033
Dividend to parent		(75,874)										(75,874)
Dividends/distributions to common shareholders	(75,874)										(75,874)
Dividends	(91)										(91)
Ending Balance at Jun. 30, 2021	1,231,605	1,222,423	0	87	14	(50,503)	1,991,836	3,062,342	1,438	1,438	(711,267)	(1,841,357)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Contribution from parent		5,327						5,327
Foreign currency translations		(588)								(588)
Non-cash compensation	1,128						1,128
Issuance of common stock through stock awards	188						188
Exercise of stock options	1,749						1,748
Issuance of common stock through employee purchase plan	2,262						2,262
Purchase of treasury stock	(70)					(70)
Foreign currency translation	(588)								(588)
Net income	106,838	106,974									106,838	106,974
Dividend to parent		(101,294)										(101,294)
Dividends/distributions to common shareholders	(101,225)										(101,225)
Dividends	(91)										(91)
Ending Balance at Sep. 30, 2021	$ 1,241,796	$ 1,232,842	$ 0	$ 88	$ 14	$ (50,573)	$ 1,997,162	$ 3,067,669	$ 850	$ 850	$ (705,745)	$ (1,835,677)