Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net income	$ 134,181	$ 133,223
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	103,207	103,422
Stock-based compensation	5,043	11,292
Amortization included in interest expense	2,623	2,661
Gain on disposition of assets and investments	(1,643)	(12,032)
Loss on extinguishment of debt	71	3,198
Deferred tax expense	30	359
Provision for doubtful accounts	3,396	3,540
(Increase) decrease in:
Receivables	(32,205)	(36,639)
Prepaid lease expenses	(25,949)	(22,945)
Other assets	(7,265)	2,244
Increase (decrease) in:
Trade accounts payable	308	152
Accrued expenses	(8,856)	3,187
Other liabilities	21,812	19,363
Net cash provided by operating activities	194,753	211,025
Cash flows from investing activities:
Acquisitions	(28,101)	(506,147)
Capital expenditures	(47,836)	(51,513)
Proceeds from disposition of assets and investments	2,566	6,734
Decrease of notes receivable	11	13
Net cash used in investing activities	(73,360)	(550,913)
Cash flows from financing activities:
Cash used for purchase of treasury stock	(8,997)	(6,204)
Net proceeds from issuance of common stock	17,196	14,882
Principal payments on long term debt	(5,625)	(9,385)
Payment on revolving credit facility	(334,000)	(233,000)
Proceeds received from revolving credit facility	182,000	347,000
Proceeds received from note offering		400,000
Payment on senior credit facility term loans	(247,500)	(300,000)
Proceeds received from senior credit facility term loans	450,000	300,000
Debt issuance costs	(4,899)	(9,140)
Distributions to non-controlling interest	(310)	(210)
Dividends/distributions	(162,702)	(145,828)
Net cash (used in) provided by financing activities	(114,837)	358,115
Effect of exchange rate changes in cash and cash equivalents	798	1,183
Net (decrease) increase in cash and cash equivalents	7,354	19,410
Cash and cash equivalents at beginning of period	35,530	22,327
Cash and cash equivalents at end of period	42,884	41,737
Supplemental disclosures of cash flow information:
Cash paid for interest	60,346	48,664
Cash paid for foreign, state and federal income taxes	7,753	7,906
LAMAR MEDIA CORP. AND SUBSIDIARIES [Member]
Cash flows from operating activities:
Net income	134,372	133,405
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	103,207	103,422
Stock-based compensation	5,043	11,292
Amortization included in interest expense	2,623	2,661
Gain on disposition of assets and investments	(1,643)	(12,032)
Loss on extinguishment of debt	71	3,198
Deferred tax expense	30	359
Provision for doubtful accounts	3,396	3,540
(Increase) decrease in:
Receivables	(32,205)	(36,639)
Prepaid lease expenses	(25,949)	(22,945)
Other assets	(7,265)	2,244
Increase (decrease) in:
Trade accounts payable	308	152
Accrued expenses	(8,856)	3,187
Other liabilities	428	(2,119)
Net cash provided by operating activities	173,560	189,725
Cash flows from investing activities:
Acquisitions	(28,101)	(506,147)
Capital expenditures	(47,836)	(51,513)
Proceeds from disposition of assets and investments	2,566	6,734
Decrease of notes receivable	11	13
Net cash used in investing activities	(73,360)	(550,913)
Cash flows from financing activities:
Principal payments on long term debt	(5,625)	(9,385)
Payment on revolving credit facility	(334,000)	(233,000)
Proceeds received from revolving credit facility	182,000	347,000
Proceeds received from note offering		400,000
Payment on senior credit facility term loans	(247,500)	(300,000)
Proceeds received from senior credit facility term loans	450,000	300,000
Debt issuance costs	(4,899)	(9,140)
Distributions to non-controlling interest	(310)	(210)
Contributions from parent	38,207	36,000
Dividend to parent	(171,517)	(151,850)
Net cash (used in) provided by financing activities	(93,644)	379,415
Effect of exchange rate changes in cash and cash equivalents	798	1,183
Net (decrease) increase in cash and cash equivalents	7,354	19,410
Cash and cash equivalents at beginning of period	35,030	21,827
Cash and cash equivalents at end of period	42,384	41,237
Supplemental disclosures of cash flow information:
Cash paid for interest	60,346	48,664
Cash paid for foreign, state and federal income taxes	$ 7,753	$ 7,906