Condensed Consolidating Statements of Income and Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net revenues	$ 387,528	$ 344,249	$ 726,061	$ 646,726
Operating expenses (income)
Direct advertising expenses	132,725	115,951	261,450	229,183
General and administrative expenses (exclusive of depreciation and amortization)	66,457	60,729	133,247	119,935
Corporate expenses (exclusive of depreciation and amortization)	20,047	19,689	36,073	35,080
Depreciation and amortization	51,933	48,725	103,422	97,955
Gain on disposition of assets	(705)	(191)	(12,032)	(2,027)
Total Operating Expenses	270,457	244,903	522,160	480,126
Operating income	117,071	99,346	203,901	166,600
Other expenses (income)	31,352	24,688	64,561	49,218
Income before income tax expense	85,719	74,658	139,340	117,382
Income tax expense	3,810	15,298	6,117	17,306
Net income	81,909	59,360	133,223	100,076
Statements of Comprehensive Income
Net income	81,909	59,360	133,223	100,076
Total comprehensive income (loss)	81,920	59,767	134,702	98,873
LAMAR MEDIA CORP [Member]
Net revenues	387,528	344,249	726,061	646,726
Operating expenses (income)
Direct advertising expenses	132,725	115,951	261,450	229,183
General and administrative expenses (exclusive of depreciation and amortization)	66,457	60,729	133,247	119,935
Corporate expenses (exclusive of depreciation and amortization)	19,958	19,600	35,891	34,903
Depreciation and amortization	51,933	48,725	103,422	97,955
Gain on disposition of assets	(705)	(191)	(12,032)	(2,027)
Total Operating Expenses	270,368	244,814	521,978	479,949
Operating income	117,160	99,435	204,083	166,777
Other expenses (income)	31,352	24,688	64,561	49,218
Income before income tax expense	85,808	74,747	139,522	117,559
Income tax expense	3,810	15,298	6,117	17,306
Net income	81,998	59,449	133,405	100,253
Statements of Comprehensive Income
Net income	81,998	59,449	133,405	100,253
Foreign currency translation adjustments	11	407	1,479	(1,203)
Total comprehensive income (loss)	82,009	59,856	134,884	99,050
LAMAR MEDIA CORP [Member] | Lamar Media [Member]
Operating expenses (income)
Equity in (earnings) loss of subsidiaries	(113,354)	(84,157)	(197,964)	(149,491)
Other expenses (income)	31,356	24,708	64,559	49,238
Income before income tax expense	81,998	59,449	133,405	100,253
Net income	81,998	59,449	133,405	100,253
Statements of Comprehensive Income
Net income	81,998	59,449	133,405	100,253
Total comprehensive income (loss)	81,998	59,449	133,405	100,253
LAMAR MEDIA CORP [Member] | Guarantor Subsidiaries [Member]
Net revenues	374,629	330,524	702,207	623,106
Operating expenses (income)
Direct advertising expenses	125,417	109,201	247,306	216,483
General and administrative expenses (exclusive of depreciation and amortization)	63,683	58,413	127,682	115,575
Corporate expenses (exclusive of depreciation and amortization)	19,536	19,067	35,184	34,105
Depreciation and amortization	49,978	46,807	99,667	94,081
Gain on disposition of assets	(705)	(191)	(12,265)	(2,027)
Total Operating Expenses	257,909	233,297	497,574	458,217
Operating income	116,720	97,227	204,633	164,889
Other expenses (income)	(3)	(20)	(4)	(22)
Income before income tax expense	116,723	97,247	204,637	164,911
Income tax expense	3,308	2,917	5,234	4,936
Net income	113,415	94,330	199,403	159,975
Statements of Comprehensive Income
Net income	113,415	94,330	199,403	159,975
Total comprehensive income (loss)	113,415	94,330	199,403	159,975
LAMAR MEDIA CORP [Member] | Non-Guarantor Subsidiaries [Member]
Net revenues	13,883	14,519	25,718	25,060
Operating expenses (income)
Direct advertising expenses	7,950	7,292	15,346	13,635
General and administrative expenses (exclusive of depreciation and amortization)	2,774	2,316	5,565	4,360
Corporate expenses (exclusive of depreciation and amortization)	422	533	707	798
Depreciation and amortization	1,955	1,918	3,755	3,874
Gain on disposition of assets			233
Total Operating Expenses	13,101	12,059	25,606	22,667
Operating income	782	2,460	112	2,393
Other expenses (income)	341	252	668	507
Income before income tax expense	441	2,208	(556)	1,886
Income tax expense	502	12,381	883	12,370
Net income	(61)	(10,173)	(1,439)	(10,484)
Statements of Comprehensive Income
Net income	(61)	(10,173)	(1,439)	(10,484)
Foreign currency translation adjustments	11	407	1,479	(1,203)
Total comprehensive income (loss)	(50)	(9,766)	40	(11,687)
LAMAR MEDIA CORP [Member] | Eliminations [Member]
Net revenues	(984)	(794)	(1,864)	(1,440)
Operating expenses (income)
Direct advertising expenses	(642)	(542)	(1,202)	(935)
Total Operating Expenses	(642)	(542)	(1,202)	(935)
Operating income	(342)	(252)	(662)	(505)
Equity in (earnings) loss of subsidiaries	113,354	84,157	197,964	149,491
Other expenses (income)	(342)	(252)	(662)	(505)
Income before income tax expense	(113,354)	(84,157)	(197,964)	(149,491)
Net income	(113,354)	(84,157)	(197,964)	(149,491)
Statements of Comprehensive Income
Net income	(113,354)	(84,157)	(197,964)	(149,491)
Total comprehensive income (loss)	$ (113,354)	$ (84,157)	$ (197,964)	$ (149,491)