Condensed Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net revenues	$ 399,345	$ 387,516	$ 1,142,785	$ 1,113,577
Operating expenses (income)
Direct advertising expenses (exclusive of depreciation and amortization)	134,977	131,778	401,896	393,228
General and administrative expenses (exclusive of depreciation and amortization)	68,500	67,487	206,452	200,734
Corporate expenses (exclusive of depreciation and amortization)	15,088	19,359	48,451	55,432
Depreciation and amortization	51,796	49,307	155,003	152,729
(Gain) loss on disposition of assets	(2,734)	(189)	(4,377)	(12,221)
Total Operating Expenses	267,627	267,742	807,425	789,902
Operating income	131,718	119,774	335,360	323,675
Other expense (income)
Loss on extinguishment of debt			71	3,198
Interest income	(2)	(2)	(6)	(6)
Interest expense	32,064	31,102	95,526	92,469
Non-operating (Income) Expenses	32,062	31,100	95,591	95,661
Income before income tax expense	99,656	88,674	239,769	228,014
Income tax expense	3,325	3,613	9,257	9,730
Net income	96,331	85,061	230,512	218,284
Cash dividends declared and paid on preferred stock	91	91	273	273
Net income applicable to common stock	$ 96,240	$ 84,970	$ 230,239	$ 218,011
Earnings per share:
Basic earnings per share	$ 0.98	$ 0.87	$ 2.35	$ 2.25
Diluted earnings per share	0.98	0.87	2.34	2.23
Cash dividends declared per share of common stock	$ 0.83	$ 0.76	$ 2.49	$ 2.26
Weighted average common shares used in computing earnings per share:
Weighted average common shares outstanding basic	98,044,523	97,254,125	97,855,642	97,056,456
Weighted average common shares outstanding diluted	98,490,277	97,881,878	98,340,248	97,631,606
Statements of Comprehensive Income
Net income	$ 96,331	$ 85,061	$ 230,512	$ 218,284
Other comprehensive income (loss)
Foreign currency translation adjustments	1,216	(328)	2,104	1,151
Comprehensive income	97,547	84,733	232,616	219,435
LAMAR MEDIA CORP. AND SUBSIDIARIES [Member]
Net revenues	399,345	387,516	1,142,785	1,113,577
Operating expenses (income)
Direct advertising expenses (exclusive of depreciation and amortization)	134,977	131,778	401,896	393,228
General and administrative expenses (exclusive of depreciation and amortization)	68,500	67,487	206,452	200,734
Corporate expenses (exclusive of depreciation and amortization)	14,982	19,252	48,154	55,143
Depreciation and amortization	51,796	49,307	155,003	152,729
(Gain) loss on disposition of assets	(2,734)	(189)	(4,377)	(12,221)
Total Operating Expenses	267,521	267,635	807,128	789,613
Operating income	131,824	119,881	335,657	323,964
Other expense (income)
Loss on extinguishment of debt			71	3,198
Interest income	(2)	(2)	(6)	(6)
Interest expense	32,064	31,102	95,526	92,469
Non-operating (Income) Expenses	32,062	31,100	95,591	95,661
Income before income tax expense	99,762	88,781	240,066	228,303
Income tax expense	3,325	3,613	9,257	9,730
Net income	96,437	85,168	230,809	218,573
Statements of Comprehensive Income
Net income	96,437	85,168	230,809	218,573
Other comprehensive income (loss)
Foreign currency translation adjustments	1,216	(328)	2,104	1,151
Comprehensive income	$ 97,653	$ 84,840	$ 232,913	$ 219,724