Condensed Consolidating Statements of Income and Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net revenues	$ 387,516	$ 350,701	$ 1,113,577	$ 997,427
Operating expenses (income)
Direct advertising expenses	131,778	121,676	393,228	350,859
General and administrative expenses (exclusive of depreciation and amortization)	67,487	59,489	200,734	179,424
Corporate expenses (exclusive of depreciation and amortization)	19,359	16,654	55,432	51,734
Depreciation and amortization	49,307	46,441	152,729	144,396
(Gain) loss on disposition of assets	(189)	(5,203)	(12,221)	(7,230)
Total Operating Expenses	267,742	239,057	789,902	719,183
Operating income	119,774	111,644	323,675	278,244
Other expenses (income)	31,100	24,707	95,661	73,925
Income (loss) before income tax expense	88,674	86,937	228,014	204,319
Income tax expense	3,613	972	9,730	18,278
Net income	85,061	85,965	218,284	186,041
Statements of Comprehensive Income
Net income	85,061	85,965	218,284	186,041
Total comprehensive income (loss)	84,733	84,252	219,435	183,125
LAMAR MEDIA CORP [Member]
Net revenues	387,516	350,701	1,113,577	997,427
Operating expenses (income)
Direct advertising expenses	131,778	121,676	393,228	350,859
General and administrative expenses (exclusive of depreciation and amortization)	67,487	59,489	200,734	179,424
Corporate expenses (exclusive of depreciation and amortization)	19,252	16,576	55,143	51,479
Depreciation and amortization	49,307	46,441	152,729	144,396
(Gain) loss on disposition of assets	(189)	(5,203)	(12,221)	(7,230)
Total Operating Expenses	267,635	238,979	789,613	718,928
Operating income	119,881	111,722	323,964	278,499
Other expenses (income)	31,100	24,707	95,661	73,925
Income (loss) before income tax expense	88,781	87,015	228,303	204,574
Income tax expense	3,613	972	9,730	18,278
Net income	85,168	86,043	218,573	186,296
Statements of Comprehensive Income
Net income	85,168	86,043	218,573	186,296
Total other comprehensive loss, net of tax	(328)	(1,713)	1,151	(2,916)
Total comprehensive income (loss)	84,840	84,330	219,724	183,380
LAMAR MEDIA CORP [Member] | Lamar Media [Member]
Operating expenses (income)
Equity in (earnings) loss of subsidiaries	(116,264)	(110,756)	(314,228)	(260,247)
Other expenses (income)	31,096	24,713	95,655	73,951
Income (loss) before income tax expense	85,168	86,043	218,573	186,296
Net income	85,168	86,043	218,573	186,296
Statements of Comprehensive Income
Net income	85,168	86,043	218,573	186,296
Total comprehensive income (loss)	85,168	86,043	218,573	186,296
LAMAR MEDIA CORP [Member] | Guarantor Subsidiaries [Member]
Net revenues	374,909	337,271	1,077,116	960,377
Operating expenses (income)
Direct advertising expenses	124,609	114,325	371,915	330,808
General and administrative expenses (exclusive of depreciation and amortization)	64,949	56,803	192,631	172,378
Corporate expenses (exclusive of depreciation and amortization)	18,895	16,155	54,079	50,260
Depreciation and amortization	47,491	44,558	147,158	138,639
(Gain) loss on disposition of assets	(217)	(5,203)	(12,482)	(7,230)
Total Operating Expenses	255,727	226,638	753,301	684,855
Operating income	119,182	110,633	323,815	275,522
Other expenses (income)	(2)	(6)	(6)	(28)
Income (loss) before income tax expense	119,184	110,639	323,821	275,550
Income tax expense	3,014	80	8,248	5,016
Net income	116,170	110,559	315,573	270,534
Statements of Comprehensive Income
Net income	116,170	110,559	315,573	270,534
Total comprehensive income (loss)	116,170	110,559	315,573	270,534
LAMAR MEDIA CORP [Member] | Non-Guarantor Subsidiaries [Member]
Net revenues	13,510	14,275	39,228	39,335
Operating expenses (income)
Direct advertising expenses	7,793	7,901	23,139	21,536
General and administrative expenses (exclusive of depreciation and amortization)	2,538	2,686	8,103	7,046
Corporate expenses (exclusive of depreciation and amortization)	357	421	1,064	1,219
Depreciation and amortization	1,816	1,883	5,571	5,757
(Gain) loss on disposition of assets	28		261
Total Operating Expenses	12,532	12,891	38,138	35,558
Operating income	978	1,384	1,090	3,777
Other expenses (income)	285	295	953	802
Income (loss) before income tax expense	693	1,089	137	2,975
Income tax expense	599	892	1,482	13,262
Net income	94	197	(1,345)	(10,287)
Statements of Comprehensive Income
Net income	94	197	(1,345)	(10,287)
Total other comprehensive loss, net of tax	(328)	(1,713)	1,151	(2,916)
Total comprehensive income (loss)	(234)	(1,516)	(194)	(13,203)
LAMAR MEDIA CORP [Member] | Eliminations [Member]
Net revenues	(903)	(845)	(2,767)	(2,285)
Operating expenses (income)
Direct advertising expenses	(624)	(550)	(1,826)	(1,485)
Total Operating Expenses	(624)	(550)	(1,826)	(1,485)
Operating income	(279)	(295)	(941)	(800)
Equity in (earnings) loss of subsidiaries	116,264	110,756	314,228	260,247
Other expenses (income)	(279)	(295)	(941)	(800)
Income (loss) before income tax expense	(116,264)	(110,756)	(314,228)	(260,247)
Net income	(116,264)	(110,756)	(314,228)	(260,247)
Statements of Comprehensive Income
Net income	(116,264)	(110,756)	(314,228)	(260,247)
Total comprehensive income (loss)	$ (116,264)	$ (110,756)	$ (314,228)	$ (260,247)