Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net income	$ 253,518us-gaap_NetIncomeLoss	$ 40,139us-gaap_NetIncomeLoss	$ 7,890us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	258,435	300,579	296,083
Non-cash compensation	24,120us-gaap_ShareBasedCompensation	24,936us-gaap_ShareBasedCompensation	14,466us-gaap_ShareBasedCompensation
Amortization included in interest expense	4,777us-gaap_AmortizationOfFinancingCosts	14,667us-gaap_AmortizationOfFinancingCosts	17,741us-gaap_AmortizationOfFinancingCosts
Gain on disposition of assets and investments	(3,192)us-gaap_GainLossOnDispositionOfAssets1	(3,804)us-gaap_GainLossOnDispositionOfAssets1	(13,817)us-gaap_GainLossOnDispositionOfAssets1
Other-than-temporary impairment of investment	4,069us-gaap_ImpairmentOfInvestments
Loss on extinguishment of debt	26,023	14,345	41,632
Deferred income tax (benefit) expense	(122,137)us-gaap_DeferredIncomeTaxExpenseBenefit	18,749us-gaap_DeferredIncomeTaxExpenseBenefit	6,316us-gaap_DeferredIncomeTaxExpenseBenefit
Provision for doubtful accounts	5,947us-gaap_ProvisionForDoubtfulAccounts	6,034us-gaap_ProvisionForDoubtfulAccounts	5,484us-gaap_ProvisionForDoubtfulAccounts
(Increase) decrease in:
Receivables	(13,553)us-gaap_IncreaseDecreaseInReceivables	(6,663)us-gaap_IncreaseDecreaseInReceivables	(13,783)us-gaap_IncreaseDecreaseInReceivables
Prepaid expenses	524	788	1,903
Other assets	662	(4,970)	(2,876)
Increase (decrease) in:
Trade accounts payable	1,076	(89)	(127)
Accrued expenses	8,273	(6,371)	2,259
Other liabilities	3,987	(3,635)	12,738
Cash flows provided by operating activities	452,529	394,705	375,909
Cash flows from investing activities:
Capital expenditures	(107,573)	(105,650)	(105,570)
Acquisitions	(65,021)	(92,248)	(206,068)
Decrease (increase) in notes receivable	4,462	(840)	122
Proceeds from disposition of assets and investments	4,135	6,869	8,117
Cash flows used in investing activities	(163,997)	(191,869)	(303,399)
Cash flows from financing activities:
Net proceeds from issuance of common stock	20,615	20,893	13,855
Cash used for purchase of treasury shares	(2,987)	(4,200)	(1,113)
Proceeds received from revolving credit facility	325,000	184,000	15,000
Payments on revolving credit facility	(410,000)	(34,000)	(15,000)
Principal payments on long term debt	(11,750)us-gaap_RepaymentsOfLongTermDebt	(33,051)us-gaap_RepaymentsOfLongTermDebt	(311,275)us-gaap_RepaymentsOfLongTermDebt
Proceeds received from senior credit facility	300,000us-gaap_ProceedsFromBankDebt		100,000us-gaap_ProceedsFromBankDebt
Debt issuance costs	(17,441)us-gaap_PaymentsOfDebtIssuanceCosts	(89)us-gaap_PaymentsOfDebtIssuanceCosts	(22,500)us-gaap_PaymentsOfDebtIssuanceCosts
Proceeds received from note offering	510,000us-gaap_ProceedsFromIssuanceOfDebt		1,035,000us-gaap_ProceedsFromIssuanceOfDebt
Payment on senior subordinated notes	(415,752)us-gaap_RepaymentsOfSubordinatedDebt	(360,383)us-gaap_RepaymentsOfSubordinatedDebt	(861,019)us-gaap_RepaymentsOfSubordinatedDebt
Payment on senior credit facility	(352,106)
Distributions to non-controlling interest	(1,094)
Dividends/distributions	(238,800)	(365)	(365)
Cash flows used in financing activities	(294,315)	(227,195)	(47,417)
Effect of exchange rate changes in cash and cash equivalents	(1,394)	(1,340)	315
Net (decrease) increase in cash and cash equivalents	(7,177)	(25,699)	25,408
Cash and cash equivalents at beginning of period	33,212	58,911	33,503
Cash and cash equivalents at end of period	26,035	33,212	58,911
Supplemental disclosures of cash flow information:
Cash paid for interest	94,646us-gaap_InterestPaid	140,048us-gaap_InterestPaid	143,589us-gaap_InterestPaid
Cash paid for state and federal income taxes	12,754us-gaap_IncomeTaxesPaid	4,096us-gaap_IncomeTaxesPaid	2,392us-gaap_IncomeTaxesPaid
LAMAR MEDIA CORP [Member]
Cash flows from operating activities:
Net income	287,035	40,338	8,115
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	258,435	300,579	296,083
Non-cash compensation	24,120	24,936	14,466
Amortization included in interest expense	4,777	14,667	17,741
Gain on disposition of assets and investments	(3,192)	(3,804)	(13,817)
Other-than-temporary impairment of investment	4,069
Loss on extinguishment of debt	26,023	14,345	41,632
Deferred income tax (benefit) expense	(155,528)	18,885	6,426
Provision for doubtful accounts	5,947	6,034	5,484
(Increase) decrease in:
Receivables	(13,553)	(6,663)	(13,233)
Prepaid expenses	524	788	1,903
Other assets	662	(4,970)	(2,876)
Increase (decrease) in:
Trade accounts payable	1,076	(89)	(127)
Accrued expenses	8,491	(6,371)	2,259
Other liabilities	(14,306)	(21,300)	5,301
Cash flows provided by operating activities	434,580	377,375	369,357
Cash flows from investing activities:
Capital expenditures	(107,573)	(105,650)	(105,570)
Acquisitions	(65,021)	(92,248)	(206,068)
Decrease (increase) in notes receivable	4,462	(840)	122
Proceeds from disposition of assets and investments	4,135	6,869	8,117
Cash flows used in investing activities	(163,997)	(191,869)	(303,399)
Cash flows from financing activities:
Proceeds received from revolving credit facility	325,000	184,000	15,000
Payments on revolving credit facility	(410,000)	(34,000)	(15,000)
Principal payments on long term debt	(11,750)	(33,051)	(311,275)
Proceeds received from senior credit facility	300,000		100,000
Debt issuance costs	(17,442)	(89)	(22,500)
Proceeds received from note offering	510,000		1,035,000
Payment on senior subordinated notes	(415,752)	(360,383)	(861,019)
Payment on senior credit facility	(352,106)
Distributions to non-controlling interest	(1,094)
Dividends to parent	(241,422)	(4,200)	(1,113)
Contributions from parent	38,201	37,858	19,668
Cash flows used in financing activities	(276,365)	(209,865)	(41,239)
Effect of exchange rate changes in cash and cash equivalents	(1,395)	(1,340)	315
Net (decrease) increase in cash and cash equivalents	(7,177)	(25,699)	25,034
Cash and cash equivalents at beginning of period	32,712	58,411	33,377
Cash and cash equivalents at end of period	25,535	32,712	58,411
Supplemental disclosures of cash flow information:
Cash paid for interest	94,646	140,048	143,589
Cash paid for state and federal income taxes	$ 12,754	$ 4,096	$ 2,392

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Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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