Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net Income (Loss)	$ 15,052	$ 41,787
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	56,840	51,425
Stock-based compensation	7,514	2,478
Amortization included in interest expense	1,242	1,348
Loss (gain) on disposition of assets and investments	8,701	(1,036)
Loss on extinguishment of debt	15,429
Deferred tax benefit	(87)	(355)
Provision for doubtful accounts	2,206	1,428
(Increase) decrease in:
Receivables	(9,876)	(955)
Prepaid lease expenses	(26,968)	(27,097)
Other assets	(7,542)	(12,053)
Increase (decrease) in:
Trade accounts payable	944	526
Accrued expenses	(27,682)	(26,646)
Other liabilities	4,999	3,646
Net cash provided by operating activities	40,772	34,496
Cash flows from investing activities:
Acquisitions	(6,637)	(17,779)
Capital expenditures	(23,252)	(19,236)
Proceeds received from insurance claims	790
Proceeds from disposition of assets and investments	244	1,592
Decrease in notes receivable	2	4
Net cash used in investing activities	(28,853)	(35,419)
Cash flows from financing activities:
Cash used for purchase of treasury stock	(4,112)	(8,997)
Net proceeds from issuance of common stock	3,974	12,934
Principal payments on long term debt	(5,703)	(5,625)
Payment on revolving credit facility	(135,000)	(54,000)
Proceeds received from revolving credit facility	112,000	134,000
Redemption of senior subordinated notes	(509,790)
Proceeds received from senior credit facility Term B loan	599,250
Debt issuance costs	(6,290)
Distributions to non-controlling interest	(118)	(205)
Dividends/distributions	(171,258)	(81,279)
Net cash used in financing activities	(117,047)	(3,172)
Principal payments on long-term debt	(5,703)	(5,625)
Effect of exchange rate changes in cash and cash equivalents	(297)	187
Net decrease in cash and cash equivalents	(105,425)	(3,908)
Cash and cash equivalents at beginning of period	115,471	35,530
Cash and cash equivalents at end of period	10,046	31,622
Supplemental disclosures of cash flow information:
Cash paid for interest	49,600	43,446
Cash paid for foreign, state and federal income taxes	1,490	3,859
LAMAR MEDIA CORP. AND SUBSIDIARIES [Member]
Cash flows from operating activities:
Net Income (Loss)	15,158	41,893
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	56,840	51,425
Stock-based compensation	7,514	2,478
Amortization included in interest expense	1,242	1,348
Loss (gain) on disposition of assets and investments	8,701	(1,036)
Loss on extinguishment of debt	15,429
Deferred tax benefit	(87)	(355)
Provision for doubtful accounts	2,206	1,428
(Increase) decrease in:
Receivables	(9,876)	(955)
Prepaid lease expenses	(26,968)	(27,097)
Other assets	(7,542)	(12,053)
Increase (decrease) in:
Trade accounts payable	944	526
Accrued expenses	(27,682)	(26,646)
Other liabilities	(7,256)	(16,163)
Net cash provided by operating activities	28,623	14,793
Cash flows from investing activities:
Acquisitions	(6,637)	(17,779)
Capital expenditures	(23,252)	(19,236)
Proceeds received from insurance claims	790
Proceeds from disposition of assets and investments	244	1,592
Decrease in notes receivable	2	4
Net cash used in investing activities	(28,853)	(35,419)
Cash flows from financing activities:
Principal payments on long term debt	(5,703)	(5,625)
Payment on revolving credit facility	(135,000)	(54,000)
Proceeds received from revolving credit facility	112,000	134,000
Redemption of senior subordinated notes	(509,790)
Proceeds received from senior credit facility Term B loan	599,250
Debt issuance costs	(6,290)
Distributions to non-controlling interest	(118)	(205)
Contributions from parent	15,941	32,546
Dividend to parent	(175,188)	(90,185)
Net cash used in financing activities	(104,898)	16,531
Principal payments on long-term debt	(5,703)	(5,625)
Effect of exchange rate changes in cash and cash equivalents	(297)	187
Net decrease in cash and cash equivalents	(105,425)	(3,908)
Cash and cash equivalents at beginning of period	114,971	35,030
Cash and cash equivalents at end of period	9,546	31,122
Supplemental disclosures of cash flow information:
Cash paid for interest	49,600	43,446
Cash paid for foreign, state and federal income taxes	$ 1,490	$ 3,859