Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net income	$ 269,358	$ 209,539
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	187,150	167,251
Stock-based compensation	18,078	22,745
Amortization included in interest expense	4,012	3,662
(Gain) loss on disposition of assets	(5,360)	7,265
Loss on extinguishment of debt		15,429
Deferred tax (benefit) expense	(14,459)	1,575
Provision for doubtful accounts	7,607	5,547
(Increase) decrease in:
Receivables	(35,739)	(31,672)
Prepaid lease expenses	21,201	(24,989)
Other assets	(7,688)	1,698
Increase (decrease) in:
Trade accounts payable	2,829	1,268
Accrued expenses	(18,015)	(20,708)
Operating lease liabilities	(41,215)
Other liabilities	20,211	11,479
Net cash provided by operating activities	407,970	370,089
Cash flows from investing activities:
Acquisitions	(214,559)	(48,141)
Capital expenditures	(97,680)	(82,174)
Proceeds received from property insurance claims	210	4,222
Proceeds from disposition of assets	2,658	5,760
(Increase) decrease in notes receivable	(448)	7
Net cash (used in) provided by investing activities	(309,819)	(120,326)
Cash flows from financing activities:
Cash used for purchase of treasury stock	(8,682)	(4,112)
Net proceeds from issuance of common stock	40,136	31,990
Principal payments on long-term debt	(24,446)	(20,119)
Payments on revolving credit facility	(495,000)	(368,000)
Proceeds received from revolving credit facility	430,000	275,000
Redemption of senior subordinated notes		(509,790)
Proceeds received from note offering	255,000
Proceeds received from accounts receivable securitization program	9,000
Payments on accounts receivable securitization program	(9,000)
Proceeds received from senior credit facility term loans		599,250
Debt issuance costs	(4,454)	(6,374)
Distributions to non-controlling interest	(439)	(388)
Dividends/distributions	(288,617)	(351,400)
Net cash used in financing activities	(96,502)	(353,943)
Effect of exchange rate changes in cash and cash equivalents	144	(682)
Net increase (decrease) in cash and cash equivalents	1,793	(104,862)
Cash and cash equivalents at beginning of period	21,494	115,471
Cash and cash equivalents at end of period	23,287	10,609
Supplemental disclosures of cash flow information:
Cash paid for interest	113,580	110,576
Cash paid for foreign, state and federal income taxes	12,532	7,983
LAMAR MEDIA CORP. AND SUBSIDIARIES [Member]
Cash flows from operating activities:
Net income	269,679	209,843
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	187,150	167,251
Stock-based compensation	18,078	22,745
Amortization included in interest expense	4,012	3,662
(Gain) loss on disposition of assets	(5,360)	7,265
Loss on extinguishment of debt		15,429
Deferred tax (benefit) expense	(14,459)	1,575
Provision for doubtful accounts	7,607	5,547
(Increase) decrease in:
Receivables	(35,739)	(31,672)
Prepaid lease expenses	21,201	(24,989)
Other assets	(7,688)	1,714
Increase (decrease) in:
Trade accounts payable	2,829	1,268
Accrued expenses	(18,015)	(20,708)
Operating lease liabilities	(41,215)
Other liabilities	(3,872)	(15,643)
Net cash provided by operating activities	384,208	343,287
Cash flows from investing activities:
Acquisitions	(214,559)	(48,141)
Capital expenditures	(97,680)	(82,174)
Proceeds received from property insurance claims	210	4,222
Proceeds from disposition of assets	2,658	5,760
(Increase) decrease in notes receivable	(448)	7
Net cash (used in) provided by investing activities	(309,819)	(120,326)
Cash flows from financing activities:
Principal payments on long-term debt	(24,446)	(20,119)
Payments on revolving credit facility	(495,000)	(368,000)
Proceeds received from revolving credit facility	430,000	275,000
Redemption of senior subordinated notes		(509,790)
Proceeds received from note offering	255,000
Proceeds received from accounts receivable securitization program	9,000
Payments on accounts receivable securitization program	(9,000)
Proceeds received from senior credit facility term loans		599,250
Debt issuance costs	(4,454)	(6,374)
Distributions to non-controlling interest	(439)	(388)
Contributions from parent	63,626	58,427
Dividend to parent	(297,027)	(355,147)
Net cash used in financing activities	(72,740)	(327,141)
Effect of exchange rate changes in cash and cash equivalents	144	(682)
Net increase (decrease) in cash and cash equivalents	1,793	(104,862)
Cash and cash equivalents at beginning of period	20,994	114,971
Cash and cash equivalents at end of period	22,787	10,109
Supplemental disclosures of cash flow information:
Cash paid for interest	113,580	110,576
Cash paid for foreign, state and federal income taxes	$ 12,532	$ 7,983