Condensed Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net revenues	$ 347,652	$ 448,742	$ 754,221	$ 833,199
Type of Revenue [Extensible List]	us-gaap:AdvertisingMember	us-gaap:AdvertisingMember	us-gaap:AdvertisingMember	us-gaap:AdvertisingMember
Operating expenses (income)
Direct advertising expenses (exclusive of depreciation and amortization)	$ 134,059	$ 146,390	$ 283,553	$ 286,860
Type of Cost Good or Service [Extensible List]	us-gaap:AdvertisingMember	us-gaap:AdvertisingMember	us-gaap:AdvertisingMember	us-gaap:AdvertisingMember
General and administrative expenses (exclusive of depreciation and amortization)	$ 67,408	$ 78,416	$ 149,612	$ 157,709
Corporate expenses (exclusive of depreciation and amortization)	16,750	18,674	35,241	35,703
Depreciation and amortization	63,998	61,693	126,311	123,199
Gain on disposition of assets	(1,015)	(537)	(3,519)	(5,161)
Total Operating Expenses	281,200	304,636	591,198	598,310
Operating income	66,452	144,106	163,023	234,889
Other expense (income)
Loss on extinguishment of debt	5		18,184
Interest income	(179)	(232)	(369)	(385)
Interest expense	35,437	38,322	71,990	75,917
Non-operating (Income) Expenses	35,263	38,090	89,805	75,532
Income before income tax expense	31,189	106,016	73,218	159,357
Income tax (benefit) expense	(240)	(12,380)	1,296	(10,292)
Net income	31,429	118,396	71,922	169,649
Cash dividends declared and paid on preferred stock	91	91	182	182
Net income applicable to common stock	$ 31,338	$ 118,305	$ 71,740	$ 169,467
Earnings per share:
Basic earnings per share	$ 0.31	$ 1.18	$ 0.71	$ 1.70
Diluted earnings per share	0.31	1.18	0.71	1.69
Cash dividends declared per share of common stock	$ 0.50	$ 0.96	$ 1.50	$ 1.92
Weighted average common shares used in computing earnings per share:
Weighted average common shares outstanding basic	100,765,681	100,012,827	100,677,510	99,862,452
Weighted average common shares outstanding diluted	100,861,881	100,222,082	100,818,347	100,058,054
Statements of Comprehensive Income
Net income	$ 31,429	$ 118,396	$ 71,922	$ 169,649
Other comprehensive income (loss)
Foreign currency translation adjustments	740	287	(858)	546
Comprehensive income	32,169	118,683	71,064	170,195
LAMAR MEDIA CORP. AND SUBSIDIARIES [Member]
Net revenues	$ 347,652	$ 448,742	$ 754,221	$ 833,199
Type of Revenue [Extensible List]	us-gaap:AdvertisingMember	us-gaap:AdvertisingMember	us-gaap:AdvertisingMember	us-gaap:AdvertisingMember
Operating expenses (income)
Direct advertising expenses (exclusive of depreciation and amortization)	$ 134,059	$ 146,390	$ 283,553	$ 286,860
Type of Cost Good or Service [Extensible List]	us-gaap:AdvertisingMember	us-gaap:AdvertisingMember	us-gaap:AdvertisingMember	us-gaap:AdvertisingMember
General and administrative expenses (exclusive of depreciation and amortization)	$ 67,408	$ 78,416	$ 149,612	$ 157,709
Corporate expenses (exclusive of depreciation and amortization)	16,645	18,585	35,012	35,505
Depreciation and amortization	63,998	61,693	126,311	123,199
Gain on disposition of assets	(1,015)	(537)	(3,519)	(5,161)
Total Operating Expenses	281,095	304,547	590,969	598,112
Operating income	66,557	144,195	163,252	235,087
Other expense (income)
Loss on extinguishment of debt	5		18,184
Interest income	(179)	(232)	(369)	(385)
Interest expense	35,437	38,322	71,990	75,917
Non-operating (Income) Expenses	35,263	38,090	89,805	75,532
Income before income tax expense	31,294	106,105	73,447	159,555
Income tax (benefit) expense	(240)	(12,380)	1,296	(10,292)
Net income	31,534	118,485	72,151	169,847
Statements of Comprehensive Income
Net income	31,534	118,485	72,151	169,847
Other comprehensive income (loss)
Foreign currency translation adjustments	740	287	(858)	546
Comprehensive income	$ 32,274	$ 118,772	$ 71,293	$ 170,393