Lamar Advertising (LAMR) 10-K 26 Feb 15 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Jun. 30, 2014	Feb. 01, 2015
Document Information [Line Items]
Document Type	10-K
Amendment Flag	FALSE
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Trading Symbol	LAMR
Entity Registrant Name	LAMAR ADVERTISING CO/NEW
Entity Central Index Key	1090425
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Public Float		$4,250,861,661
Common Class A [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding			80,933,071
Common Class B [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding			14,610,365
LAMAR MEDIA CORP [Member]
Document Information [Line Items]
Document Type	10-K
Amendment Flag	FALSE
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Entity Registrant Name	LAMAR MEDIA CORP/DE
Entity Central Index Key	899045
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Public Float		$0
LAMAR MEDIA CORP [Member] | Class Units [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding			100

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$26,035	$33,212
Receivables, net of allowance for doubtful accounts	169,610	161,741
Prepaid expenses	42,713	42,048
Deferred income tax assets	729	10,378
Other current assets	34,057	34,679
Total current assets	273,144	282,058
Property, plant and equipment	3,110,385	3,036,456
Less accumulated depreciation and amortization	-2,026,745	-1,914,527
Net property, plant and equipment	1,083,640	1,121,929
Goodwill	1,512,768	1,503,553
Intangible assets, net	366,985	419,385
Deferred financing costs, net of accumulated amortization	32,725	30,290
Deferred income tax assets	12,496
Other assets	37,060	44,403
Total assets	3,318,818	3,401,618
Current liabilities:
Trade accounts payable	16,368	13,341
Current maturities of long-term debt	15,625	55,935
Accrued expenses	108,790	98,924
Deferred income	84,558	77,153
Total current liabilities	225,341	245,353
Long-term debt	1,884,270	1,882,867
Deferred income tax liabilities		119,150
Asset retirement obligation	204,327	200,831
Other liabilities	23,414	20,471
Total liabilities	2,337,352	2,468,672
Stockholder's equity:
Additional paid-in-capital	1,611,775	2,470,375
Accumulated comprehensive income	2,454	3,867
Accumulated deficit	-632,859	-647,577
Stockholders' equity	981,466	932,946
Cost of shares held in treasury, 0 and 17,216,635 shares in 2014 and 2013, respectively		-893,831
Total liabilities and stockholder's equity	3,318,818	3,401,618
LAMAR MEDIA CORP [Member]
Current assets:
Cash and cash equivalents	25,535	32,712
Receivables, net of allowance for doubtful accounts	169,610	161,741
Prepaid expenses	42,713	42,048
Deferred income tax assets	729	10,378
Other current assets	34,057	34,679
Total current assets	272,644	281,558
Property, plant and equipment	3,110,385	3,036,456
Less accumulated depreciation and amortization	-2,026,745	-1,914,527
Net property, plant and equipment	1,083,640	1,121,929
Goodwill	1,502,616	1,493,401
Intangible assets, net	366,518	418,919
Deferred financing costs, net of accumulated amortization	30,771	28,336
Deferred income tax assets	12,496
Other assets	31,775	39,118
Total assets	3,300,460	3,383,261
Current liabilities:
Trade accounts payable	16,368	13,341
Current maturities of long-term debt	15,625	55,935
Accrued expenses	105,007	95,632
Deferred income	84,558	77,153
Total current liabilities	221,558	242,061
Long-term debt	1,884,270	1,882,867
Deferred income tax liabilities		152,541
Asset retirement obligation	204,327	200,831
Other liabilities	23,414	20,471
Total liabilities	2,333,569	2,498,771
Stockholder's equity:
Common stock, value	0	0
Additional paid-in-capital	2,682,216	2,644,015
Accumulated comprehensive income	2,454	3,867
Accumulated deficit	-1,717,779	-1,763,392
Stockholders' equity	966,891	884,490
Total liabilities and stockholder's equity	3,300,460	3,383,261
Series AA Preferred Stock [Member]
Stockholder's equity:
Preferred stock, value	0	0
Preferred Class A [Member]
Stockholder's equity:
Preferred stock, value	0	0
Common Class A [Member]
Stockholder's equity:
Common stock, value	81	97
Common Class B [Member]
Stockholder's equity:
Common stock, value	$15	$15

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Allowance for doubtful accounts	$7,957	$7,615
Accumulated amortization	14,764	25,180
Shares held in treasury	0	17,216,635
LAMAR MEDIA CORP [Member]
Allowance for doubtful accounts	7,957	7,615
Accumulated amortization	$5,476	$15,893
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	3,000	3,000
Common stock, shares issued	100	100
Common stock, shares outstanding	100	100
Series AA Preferred Stock [Member]
Preferred stock, par value	$0.00	$0.00
Preferred stock, cumulative dividends	$63.80	$63.80
Preferred stock, shares authorized	5,720	5,720
Preferred stock, shares issued	5,720	5,720
Preferred stock, shares outstanding	5,720	5,720
Preferred Class A [Member]
Preferred stock, par value	$638	$638
Preferred stock, cumulative dividends	$63.80	$63.80
Preferred stock, shares authorized	0	10,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common Class A [Member]
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	362,500,000	175,000,000
Common stock, shares issued	80,933,071	97,426,144
Common stock, shares outstanding	80,933,071	80,209,509
Common Class B [Member]
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	37,500,000	37,500,000
Common stock, shares issued	14,610,365	14,610,365
Common stock, shares outstanding	14,610,365	14,610,365

Consolidated_Statements_of_Ope

Consolidated Statements of Operations and Comprehensive Income (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net revenues	$1,287,060	$1,245,842	$1,179,736
Operating expenses (income):
Direct advertising expenses (exclusive of depreciation and amortization)	453,269	436,844	418,538
General and administrative expenses (exclusive of depreciation and amortization)	230,800	231,574	211,320
Corporate expenses (exclusive of depreciation and amortization)	69,078	57,212	53,086
Depreciation and amortization	258,435	300,579	296,083
Gain on disposition of assets	-3,192	-3,804	-13,817
Total Operating Expenses	1,008,390	1,022,405	965,210
Operating income	278,670	223,437	214,526
Other expense (income):
Loss on extinguishment of debt	26,023	14,345	41,632
Other-than-temporary impairment of investment	4,069
Interest income	-102	-165	-331
Interest expense	105,254	146,277	157,093
Non-operating (Income) Expenses	135,244	160,457	198,394
Income (loss) before income tax expense	143,426	62,980	16,132
Income tax (benefit) expense	-110,092	22,841	8,242
Net income	253,518	40,139	7,890
Preferred stock dividends	365	365	365
Net income applicable to common stock	253,153	39,774	7,525
Earnings per share:
Basic earnings per share	$2.66	$0.42	$0.08
Diluted earnings per share	$2.66	$0.42	$0.08
Cash dividends declared per share of common stock	$2.50
Weighted average common shares outstanding	95,218,083	94,387,230	93,379,246
Incremental common shares from dilutive stock options	66,043	358,285	287,395
Weighted average common shares assuming dilution	95,284,126	94,745,515	93,666,641
Statements of Comprehensive Income
Net income	253,518	40,139	7,890
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments	-1,413	-2,111	652
Comprehensive income	252,105	38,028	8,542
LAMAR MEDIA CORP [Member]
Net revenues	1,287,060	1,245,842	1,179,736
Operating expenses (income):
Direct advertising expenses (exclusive of depreciation and amortization)	453,269	436,844	418,538
General and administrative expenses (exclusive of depreciation and amortization)	230,800	231,574	211,320
Corporate expenses (exclusive of depreciation and amortization)	68,733	56,877	52,750
Depreciation and amortization	258,435	300,579	296,083
Gain on disposition of assets	-3,192	-3,804	-13,817
Total Operating Expenses	1,008,045	1,022,070	964,874
Operating income	279,015	223,772	214,862
Other expense (income):
Loss on extinguishment of debt	26,023	14,345	41,632
Other-than-temporary impairment of investment	4,069
Interest income	-102	-165	-331
Interest expense	105,254	146,277	157,093
Non-operating (Income) Expenses	135,244	160,457	198,394
Income (loss) before income tax expense	143,771	63,315	16,468
Income tax (benefit) expense	-143,264	22,977	8,353
Net income	287,035	40,338	8,115
Statements of Comprehensive Income
Net income	287,035	40,338	8,115
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments	-1,413	-2,111	652
Comprehensive income	$285,622	$38,227	$8,767

Consolidated_Statements_of_Sto

Consolidated Statements of Stockholders' Equity (USD $)	Total	LAMAR MEDIA CORP [Member]	Preferred Stock [Member]	Preferred Stock [Member]	Common Stock [Member]	Common Stock [Member]	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member]	Accumulated Comprehensive Income [Member]	Accumulated Comprehensive Income [Member]	Accumulated Deficit [Member]	Accumulated Deficit [Member]
In Thousands			Series AA Preferred Stock [Member]	Preferred Class A [Member]	LAMAR MEDIA CORP [Member]	Common Class A [Member]	Common Class B [Member]			LAMAR MEDIA CORP [Member]		LAMAR MEDIA CORP [Member]		LAMAR MEDIA CORP [Member]
Beginning Balance at Dec. 31, 2011	$827,721	$778,112	$0	$0	$0	$95	$15	($888,518)	$2,405,679	$2,579,318	$5,326	$5,326	($694,876)	($1,806,532)
Non-cash compensation	14,466								14,466
Contribution from parent		26,839								26,839
Exercise of stock options	10,356					1			10,355
Issuance of shares of common stock through employee purchase plan	3,499								3,499
Tax shortfall related to options exercised	-1,481								-1,481
Purchase of treasury stock	-1,113							-1,113
Foreign currency translation	652	652									652	652
Net income	7,890	8,115											7,890	8,115
Dividend to parent		-1,113												-1,113
Dividends	-365												-365
Ending Balance at Dec. 31, 2012	861,625	812,605	0	0	0	96	15	-889,631	2,432,518	2,606,157	5,978	5,978	-687,351	-1,799,530
Non-cash compensation	18,179								18,179
Contribution from parent		37,858								37,858
Exercise of stock options	16,993					1			16,992
Issuance of shares of common stock through employee purchase plan	3,900								3,900
Tax shortfall related to options exercised	-1,214								-1,214
Purchase of treasury stock	-4,200							-4,200
Foreign currency translation	-2,111	-2,111									-2,111	-2,111
Net income	40,139	40,338											40,139	40,338
Dividend to parent		-4,200												-4,200
Dividends	-365												-365
Ending Balance at Dec. 31, 2013	932,946	884,490	0	0	0	97	15	-893,831	2,470,375	2,644,015	3,867	3,867	-647,577	-1,763,392
Non-cash compensation	17,600								17,600
Contribution from parent		38,201								38,201
Exercise of stock options	16,247					1			16,246
Issuance of shares of common stock through employee purchase plan	4,368								4,368
Tax shortfall related to options exercised	-13								-13
Purchase of treasury stock	-2,987							-2,987
Retirement of shares of treasury stock	-896,818					-17		896,818	-896,801
Foreign currency translation	-1,413	-1,413									-1,413	-1,413
Net income	253,518	287,035											253,518	287,035
Dividend to parent		-241,422												-241,422
Dividends-distributions to common shareholders	-238,435												-238,435
Dividends	-365												-365
Ending Balance at Dec. 31, 2014	$981,466	$966,891	$0	$0	$0	$81	$15		$1,611,775	$2,682,216	$2,454	$2,454	($632,859)	($1,717,779)

Consolidated_Statements_of_Sto1

Consolidated Statements of Stockholders' Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Exercise of stock options	522,032	682,263	586,563
Purchase of treasury stock	54,295	97,430	36,553
Retirement of treasury stock	17,270,930
Common stock dividends/distributions	$2.50
Preferred stock dividend shares	$63.80	$63.80	$63.80
Treasury Stock [Member]
Purchase of treasury stock	54,295	97,430	36,553
Retirement of treasury stock	17,270,930
Additional Paid-in Capital [Member]
Exercise of stock options	522,032	682,263	586,563
Accumulated Deficit [Member]
Common stock dividends/distributions	$2.50
Preferred stock dividend shares	$63.80	$63.80	$63.80

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net income	$253,518	$40,139	$7,890
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	-122,137	18,749	6,316
Provision for doubtful accounts	5,947	6,034	5,484
(Increase) decrease in:
Receivables	-13,553	-6,663	-13,783
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	-33,051	-311,275
Proceeds received from senior credit facility	300,000		100,000
Debt issuance costs	-17,441	-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/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	94,646	140,048	143,589
Cash paid for state and federal income taxes	12,754	4,096	2,392
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

Significant_Accounting_Policie

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Significant Accounting Policies	(1) Significant Accounting Policies
	(a) Nature of Business
	Lamar Advertising Company (the Company) is engaged in the outdoor advertising business, operating over 144,000 billboard advertising displays in 44 states, Canada and Puerto Rico. The Company’s operating strategy is to be the leading provider of outdoor advertising services in the markets it serves.
	In addition, the Company operates a logo sign business in 23 states throughout the United States and the province of Ontario, Canada and operates over 41,000 transit advertising displays in 16 states, Canada and Puerto Rico. Logo signs are erected pursuant to state-awarded service contracts on public rights-of-way near highway exits and deliver brand name information on available gas, food, lodging and camping services. Included in the Company’s logo sign business are tourism signing contracts. The Company provides transit advertising on bus shelters, benches and buses in the markets it serves.
	REIT Conversion
	As previously announced, since January 1, 2014, the Company has been organized and has operated in a manner that enables it to qualify, and intends to continue to operate in a manner that will allow it to continue to qualify, as a Real Estate Investment Trust, or REIT, for federal income tax purposes. As part of the Company’s REIT conversion, the Company completed a merger with its predecessor which was approved by the Company’s stockholders in November 2014. At the time of the merger, all outstanding shares of the Company’s Class A common stock held in treasury ceased to be outstanding and a corresponding adjustment was recorded to additional paid-in capital and common stock.
	As a REIT, the Company generally will not be subject to federal income taxes on its income and gains that the Company distributes to its stockholders, including the income derived from advertising rental revenue. However, even as a REIT, the Company will remain obligated to pay income taxes on earnings from the assets of its taxable REIT subsidiaries (“TRSs”). In addition, the Company’s foreign assets and operations continue to be subject to taxation in the foreign jurisdictions where those assets are held or those operations are conducted.
	(b) Principles of Consolidation
	The accompanying consolidated financial statements include Lamar Advertising Company, its wholly owned subsidiary, Lamar Media Corp. (Lamar Media), and its majority-owned subsidiaries. All inter-company transactions and balances have been eliminated in consolidation.
	An operating segment is a component of an enterprise:
		•		that engages in business activities from which it may earn revenues and incur expenses;
		•		whose operating results are regularly reviewed by the enterprise’s chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance; and
		•		for which discrete financial information is available.
	We define the term ‘chief operating decision maker’ to be our executive management group, which consist of our Chief Executive Officer, President and Chief Financial Officer. Currently, all operations are reviewed on a consolidated basis for budget and business plan performance by our executive management group. Additionally, operational performance at the end of each reporting period is viewed in the aggregate by our management group. Any decisions related to changes in invested capital, personnel, operational improvement or training, or to allocate other company resources are made based on the combined results.
	We operate in a single operating and reporting segment, advertising. We rent advertising space on billboards, buses, shelters and benches and logo plates.
	(c) Property, Plant and Equipment
	Property, plant and equipment are stated at cost. Depreciation is calculated using accelerated and straight-line methods over the estimated useful lives of the assets.
	(d) Goodwill and Intangible Assets
	Goodwill is subject to an annual impairment test. The Company designated December 31 as the date of its annual goodwill impairment test. Impairment testing involves various estimates and assumptions, which could vary, and an analysis of relevant market data and market capitalization. If industry and economic conditions deteriorate, the Company may be required to assess goodwill impairment before the next annual test, which could result in impairment charges.
	The Company is required to identify its reporting units and determine the carrying value of each reporting unit. The Company has indentified two reporting units, Billboard operations and Logo operations, by assigning the assets and liabilities, including the existing goodwill and intangible assets, to those reporting units. The Company is required to determine the fair value of each reporting unit and compare it to the carrying amount of the reporting unit. To the extent the carrying amount of a reporting unit exceeds the fair value of the reporting unit, the Company would be required to perform the second step of the impairment test, as this is an indication that the reporting unit goodwill may be impaired. The fair value of each reporting unit exceeded its carrying amount at its annual impairment test date on December 31, 2014 and 2013; therefore, the Company was not required to recognize an impairment loss.
	Intangible assets, consisting primarily of site locations, customer lists and contracts, and non-competition agreements are amortized using the straight-line method over the assets estimated useful lives, generally from 3 to 15 years.
	(e) Impairment of Long-Lived Assets
	Long-lived assets, such as property, plant and equipment, and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset or asset group before interest expense. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized by the amount by which the carrying amount of the asset exceeds the fair value of the asset or asset group. Assets to be disposed of would be separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and are no longer depreciated. The assets and liabilities of a disposed group classified as held for sale would be presented separately in the appropriate asset and liability sections of the balance sheet.
	(f) Acquisitions
	For transactions that meet the definition of a business combination, the Company allocates the purchase price, including any contingent consideration, to the assets acquired and the liabilities assumed at their estimated fair values as of the date of the acquisition with any excess of the purchase price paid over the estimated fair value of net assets acquired recorded as goodwill. The fair value of the assets acquired and liabilities assumed is typically determined by using either estimates of replacement costs or discounted cash flow valuation methods. When determining the fair value of tangible assets acquired, the Company must estimate the cost to replace the asset with a new asset, adjusted for an estimated reduction in fair value due to age of the asset, and the economic useful life. When determining the fair value of intangible assets acquired, the Company must estimate the applicable discount rate and the timing and amount of future cash flows. The determination of the final purchase price and the acquisition-date fair value of identifiable assets acquired and liabilities assumed may extend over more than one period and result in adjustments to the preliminary estimate recognized in the prior period financial statements.
	(g) Deferred Income
	Deferred income consists principally of advertising revenue invoiced in advance and gains resulting from the sale of certain assets to related parties. Deferred advertising revenue is recognized in income over the term of the contract.
	(h) Revenue Recognition
	The Company recognizes outdoor advertising revenue on an accrual basis ratably over the term of the contracts. Production revenue and the related expense for the advertising copy are recognized upon completion of the sale.
	The Company engages in barter transactions where the Company trades advertising space for goods and services. The Company recognizes revenues and expenses from barter transactions at fair value, which is determined based on the Company’s own historical practice of receiving cash for similar advertising space from buyers unrelated to the party in the barter transaction. The amount of revenue and expense recognized for advertising barter transactions is as follows:
			2014		2013		2012
	Net revenues		$	7,839	$	7,862	$	6,798
	Direct advertising expenses		$	2,928	$	3,005	$	2,900
	General and administrative expenses		$	4,675	$	4,417	$	3,699
	(i) Income Taxes
	As a REIT, the Company is generally not subject to federal income taxes on income and gains distributed to the Company’s stockholders. However, the Company remains obligated to pay income taxes on earnings from domestic TRSs. In addition, the Company’s foreign assets and operations continue to be subject to taxation in the foreign jurisdictions where those assets are held or where those operations are conducted, including those designated as Qualified REIT Subsidiaries, or QRSs, for federal income tax purposes. Accordingly, the consolidated financial statements reflect provisions for federal, state, local and foreign income taxes. The Company recognizes deferred tax assets and liabilities for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis, as well as operating loss and tax credit carryforwards. The Company measures deferred tax assets and liabilities using enacted tax rates expected to apply to taxable income in the years in which those temporary differences and carry forwards are expected to be recovered or settled. The effect on deferred tax assets and liabilities as a result of a change in tax rates is recognized in income in the period that includes the enactment date.
	(j) Dividends/Distributions
	During the year ended December 31, 2014, the Company included in its quarterly cash distributions to its common stockholders approximately $39,915 or $0.42 per share, of earnings and profits accumulated during the years it was taxed as a C corporation, in anticipation of commencing to operate as a REIT effective January 1, 2014. As a REIT, the Company must annually distribute to its stockholders an amount equal to at least 90% of its REIT taxable income (determined before the deduction for distributed earnings and excluding any net capital gain). During the year ended December 31, 2014, the Company declared and paid distributions of its REIT taxable income of an aggregate of $198,520 or $2.08 per share. The amount, timing and frequency of future distributions will be at the sole discretion of the Board of Directors and will be declared based upon various factors, a number of which may be beyond the Company’s control, including the financial condition and operating cash flows, the amount required to maintain REIT status and reduce any income and excise taxes that the Company otherwise would be required to pay, limitations on distributions in our existing and future debt instruments, the Company’s ability to utilize net operating losses (“NOLs”) to offset, in whole or in part, the Company’s distribution requirements, limitations on its ability to fund distributions using cash generated through its TRSs and other factors that the Board of Directors may deem relevant. During the years ended December 31, 2014, 2013 and 2012, the Company paid cash dividend distributions to holders of its Series AA Preferred Stock of $365 or $63.80 per share.
	(k) Earnings Per Share
	The calculation of basic earnings per share excludes any dilutive effect of stock options and convertible debt, while diluted earnings per share includes the dilutive effect of stock options and convertible debt. For the years ended December 31, 2014, 2013 and 2012 there were no dilutive shares excluded from the calculation.
	(l) Stock Based Compensation
	Compensation expense for share-based awards is recognized based on the grant date fair value of those awards. Stock-based compensation expense includes an estimate for pre-vesting forfeitures and is recognized over the requisite service periods of the awards on a straight-line basis, which is generally commensurate with the vesting term. Non-cash compensation expense recognized during the years ended December 31, 2014, 2013, and 2012 were $24,120, $24,936 and $14,466, respectively. The $24,120 expensed during the year ended December 31, 2014 consists of (i) $9,652 related to stock options, (ii) $14,210 related to stock grants, made under the Company’s performance-based stock incentive program in 2014 and (iii) $258 related to stock awards to directors. See Note 14 for information on the assumptions used to calculate the fair value of stock-based compensation.
	(m) Cash and Cash Equivalents
	The Company considers all highly-liquid investments with original maturities of three months or less to be cash equivalents.
	(n) Foreign Currency Translation
	Local currencies generally are considered the functional currencies outside the United States. Assets and liabilities for operations in local-currency environments are translated at year-end exchange rates. Income and expense items are translated at average rates of exchange prevailing during the year. Foreign currency translation adjustments are recorded as a component of other comprehensive income in the Consolidated Statement of Operations and Comprehensive Income and as a component of accumulated other comprehensive income in the Consolidated Statement of Stockholders’ Equity.
	(o) Asset Retirement Obligations
	The Company is required to record the fair value of obligations associated with the retirement of tangible long-lived assets in the period in which it is incurred. The liability is capitalized as part of the related long-lived asset’s carrying amount. Over time, accretion of the liability is recognized as an operating expense and the capitalized cost is depreciated over the expected useful life of the related asset. The Company’s asset retirement obligations relate primarily to the dismantlement, removal, site reclamation and similar activities of its properties.
	(p) Use of Estimates
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
	(q) Comprehensive Income
	Total comprehensive income is presented in the Consolidated Statements of Operations and Comprehensive Income and the components of accumulated other comprehensive income are presented in the Consolidated Statements of Stockholders’ Equity. Comprehensive Income is composed of foreign currency translation effects.
	(r) Fair Value Measurements
	The Company determines the fair value of its financial instruments using the fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.
	(s) Subsequent Events
	The Company has performed an evaluation of subsequent events through the date on which the financial statements are issued.  There were no subsequent events identified through the date on which these financial statements are issued.
LAMAR MEDIA CORP [Member]
Significant Accounting Policies	(1) Significant Accounting Policies
	(a) Nature of Business
	Lamar Media Corp. is a wholly owned subsidiary of Lamar Advertising Company. Lamar Media Corp. is engaged in the outdoor advertising business operating approximately 144,000 outdoor advertising displays in 44 states. Lamar Media’s operating strategy is to be the leading provider of outdoor advertising services in the markets it serves.
	In addition, Lamar Media operates a logo sign business in 23 states throughout the United States as well as the province of Ontario, Canada. Logo signs are erected pursuant to state-awarded service contracts on public rights-of-way near highway exits and deliver brand name information on available gas, food, lodging and camping services. Included in the Company’s logo sign business are tourism signing contracts. The Company provides transit advertising on bus shelters, benches and buses in the markets it serves.
	Certain footnotes are not provided for the accompanying financial statements as the information in notes 2, 4, 6, 9, 10, 13, 14, 15, 16, 17, 18, 19 and 20 and portions of notes 1 and 12 to the consolidated financial statements of Lamar Advertising Company included elsewhere in this filing are substantially equivalent to that required for the consolidated financial statements of Lamar Media Corp. Earnings per share data is not provided for the operating results of Lamar Media Corp. as it is a wholly owned subsidiary of Lamar Advertising Company.
	(b) Principles of Consolidation
	The accompanying consolidated financial statements include Lamar Media Corp., its wholly owned subsidiaries, The Lamar Company, LLC, Lamar Central Outdoor, Inc., Lamar Oklahoma Holding Co., Inc., Lamar Advertising Southwest, Inc., Lamar DOA Tennessee Holdings, Inc., and Interstate Logos, LLC. and their majority-owned subsidiaries. All inter-company transactions and balances have been eliminated in consolidation.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2014
Business Combinations [Abstract]
Acquisitions	(2) Acquisitions
	Year Ended December 31, 2014
	During the twelve months ended December 31, 2014, the Company completed several acquisitions of outdoor advertising assets for a total cash purchase price of $65,021.
	Each of these acquisitions was accounted for under the acquisition method of accounting, and, accordingly, the accompanying consolidated financial statements include the results of operations of each acquired entity from the date of acquisition. The acquisition costs have been allocated to assets acquired and liabilities assumed based on fair market value estimates at the dates of acquisition. The following is a summary of the allocation of the acquisition costs in the above transactions.
		Total
	Property, plant and equipment	$	10,542
	Goodwill		9,457
	Site locations		36,982
	Non-competition agreements		135
	Customer lists and contracts		7,216
	Current assets		895
	Current liabilities		(206	)
		$	65,021
	Total acquired intangible assets for the year ended December 31, 2014 were $53,790, of which $9,457 was assigned to goodwill. Although goodwill is not amortized for financial statement purposes, $9,457 is expected to be fully deductible for tax purposes. The remaining $44,333 of acquired intangible assets have a weighted average useful life of approximately 14 years. The intangible assets include customer lists and contracts of $7,216 (7 year weighted average useful life) and site locations of $36,982 (15 year weighted average useful life). The aggregate amortization expense related to the 2014 acquisitions for the year ended December 31, 2014 was approximately $1,452.
	The following unaudited pro forma financial information for the Company gives effect to the 2014 and 2013 acquisitions as if they had occurred on January 1, 2013. These pro forma results do not purport to be indicative of the results of operations which actually would have resulted had the acquisitions occurred on such date or to project the Company’s results of operations for any future period.
		2014			2013
		(unaudited)
	Net revenues	$	1,291,771		$	1,262,506
	Net income applicable to common stock	$	256,785		$	40,015
	Net income per common share — basic	$	2.7		$	0.42
	Net income per common share — diluted	$	2.69		$	0.42
	Year Ended December 31, 2013
	During the twelve months ended December 31, 2013, the Company completed several acquisitions of outdoor advertising assets for a total purchase price of $97,230, of which $92,248 was in cash and $4,982 in non-cash consideration consisting principally of exchanges of outdoor advertising assets. As a result of the acquisitions, a gain of $67 was recorded for transactions which involved the exchange of outdoor advertising assets during the year ended December 31, 2013.
	Each of these acquisitions was accounted for under the acquisition method of accounting, and, accordingly, the accompanying consolidated financial statements include the results of operations of each acquired entity from the date of acquisition. The acquisition costs have been allocated to assets acquired and liabilities assumed based on fair market value estimates at the dates of acquisition. The following is a summary of the allocation of the acquisition costs in the above transactions.
		Total
	Property, plant and equipment	$	18,196
	Goodwill		18,631
	Site locations		50,333
	Non-competition agreements		430
	Customer lists and contracts		10,390
	Other assets		1,408
	Current liabilities		(2,158	)
		$	97,230
	Total acquired intangible assets for the year ended December 31, 2013 were $79,784, of which $18,631 was assigned to goodwill. Although goodwill is not amortized for financial statement purposes, $18,582 is expected to be fully deductible for tax purposes. The remaining $61,153 of acquired intangible assets have a weighted average useful life of approximately 14 years. The intangible assets include customer lists and contracts of $10,390 (7 year weighted average useful life) and site locations of $50,333 (15 year weighted average useful life). The aggregate amortization expense related to the 2013 acquisitions for the year ended December 31, 2013 was approximately $2,158.
	The following unaudited pro forma financial information for the Company gives effect to the 2013 and 2012 acquisitions as if they had occurred on January 1, 2012. These pro forma results do not purport to be indicative of the results of operations which actually would have resulted had the acquisitions occurred on such date or to project the Company’s results of operations for any future period.
		2013			2012
		(unaudited)
	Net revenues	$	1,255,376		$	1,225,958
	Net income applicable to common stock	$	40,725		$	12,098
	Net income per common share — basic	$	0.43		$	0.13
	Net income per common share — diluted	$	0.43		$	0.13

Noncash_Financing_and_Investin

Non-cash Financing and Investing Activities	12 Months Ended
	Dec. 31, 2014
Non-cash Financing and Investing Activities	(3) Non-cash Financing and Investing Activities
	For the years ended December 31, 2014 and December 31, 2013, the Company had $1,900 and $4,982 non-cash investing activities related to capital expenditures and acquisitions of outdoor advertising assets, respectively. During the year ended December 31, 2014, the Company had non-cash financing activity related to the retirement of 17,270,930 shares of treasury stock for $896,818 related to the Company’s conversion to a REIT. There were no significant non-cash financing activities during the year ended December 31, 2013.
LAMAR MEDIA CORP [Member]
Non-cash Financing and Investing Activities	(2) Non-cash Financing and Investing Activities
	For the years ended December 31, 2014 and 2013, the Company had non-cash investing activities of $1,900 and $4,982 related to capital expenditures and acquisitions of outdoor advertising assets. There were no significant non-cash financing activities during the years ended December 31, 2014 and December 31, 2013.

Property_Plant_and_Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	(4) Property, Plant and Equipment
	Major categories of property, plant and equipment at December 31, 2014 and 2013 are as follows:
		Estimated Life	2014		2013
		(Years)
	Land	—	$	316,798	$	312,883
	Building and improvements	10 — 39		132,360		125,724
	Advertising structures	5 — 15		2,520,644		2,459,425
	Automotive and other equipment	3 — 7		140,583		138,424
			$	3,110,385	$	3,036,456

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2014
Goodwill and Other Intangible Assets	(5) Goodwill and Other Intangible Assets
	The following is a summary of intangible assets at December 31, 2014 and December 31, 2013:
		Estimated		2014				2013
		Life
		(Years)		Gross Carrying		Accumulated		Gross Carrying		Accumulated
				Amount		Amortization		Amount		Amortization
	Amortizable Intangible Assets:
	Customer lists and contracts	7 — 10		$	499,310	$	470,170	$	492,299	$	463,188
	Non-competition agreements	3 — 15			64,062		63,192		63,933		62,914
	Site locations	15			1,531,161		1,194,709		1,495,635		1,106,947
	Other	5 — 15			14,008		13,485		14,008		13,441
				$	2,108,541	$	1,741,556	$	2,065,875	$	1,646,490
	Unamortizable Intangible Assets:
	Goodwill			$	1,766,304	$	253,536	$	1,757,089	$	253,536
	The changes in the gross carrying amount of goodwill for the year ended December 31, 2014 are as follows:
	Balance as of December 31, 2013	$	1,757,089
	Goodwill acquired during the year		9,457
	Purchase price adjustments and other		(242	)
	Impairment losses		—
	Balance as of December 31, 2014	$	1,766,304
	Amortization expense for the years ended December 31, 2014, 2013 and 2012 was $96,139, $106,533 and $102,941, respectively. The following is a summary of the estimated amortization expense for future years:
	2015	$	62,020
	2016		51,809
	2017		46,562
	2018		41,849
	2019		36,547
	Thereafter		128,198
	Total	$	366,985
LAMAR MEDIA CORP [Member]
Goodwill and Other Intangible Assets	(3) Goodwill and Other Intangible Assets
	The following is a summary of intangible assets at December 31, 2014 and December 31, 2013:
		Estimated		2014				2013
		Life		Gross Carrying		Accumulated		Gross Carrying		Accumulated
		(Years)		Amount		Amortization		Amount		Amortization
	Amortizable Intangible Assets:
	Customer lists and contracts	7—10		$	499,311	$	470,170	$	492,299	$	463,188
	Non-competition agreement	3—15			64,062		63,192		63,933		62,914
	Site locations	15			1,531,161		1,194,709		1,495,635		1,106,945
	Other	5—15			13,463		13,408		13,463		13,364
				$	2,107,997	$	1,741,479	$	2,065,330	$	1,646,411
	Unamortizable Intangible Assets:
	Goodwill			$	1,755,283	$	252,667	$	1,746,068	$	252,667
	The changes in the gross carrying amount of goodwill for the year ended December 31, 2014 are as follows:
	Balance as of December 31, 2013	$	1,746,068
	Goodwill acquired during the year		9,457
	Purchase price adjustments and other		(242	)
	Impairment losses		—
	Balance as of December 31, 2014	$	1,755,283

Leases

Leases	12 Months Ended
	Dec. 31, 2014
Leases [Abstract]
Leases	(6) Leases
	The Company is party to various operating leases for production facilities, vehicles and sites upon which advertising structures are built. The leases expire at various dates, and have varying options to renew and to cancel and may contain escalation provisions. The following is a summary of minimum annual rental payments required under those operating leases that have original or remaining lease terms in excess of one year as of December 31, 2014:
	2015	$	162,840
	2016	$	128,145
	2017	$	112,157
	2018	$	97,166
	2019	$	85,174
	Thereafter	$	622,597
	Rental expense related to the Company’s operating leases was $227,879, $222,638 and $209,110 for the years ended December 31, 2014, 2013 and 2012, respectively.

Accrued_Expenses

Accrued Expenses	12 Months Ended
	Dec. 31, 2014
Accrued Expenses	(7) Accrued Expenses
	The following is a summary of accrued expenses at December 31, 2014 and 2013:
		2014		2013
	Payroll	$	13,852	$	11,311
	Interest		29,281		23,451
	Insurance benefits		12,853		13,090
	Accrued lease expense		35,903		37,346
	Other		16,901		13,726
		$	108,790	$	98,924
LAMAR MEDIA CORP [Member]
Accrued Expenses	(4) Accrued Expenses
	The following is a summary of accrued expenses at December 31, 2014 and 2013:
		2014		2013
	Payroll	$	13,852	$	11,311
	Interest		29,281		23,451
	Accrued lease expense		35,903		37,346
	Other		25,971		23,524
		$	105,007	$	95,632

Longterm_Debt

Long-term Debt	12 Months Ended
	Dec. 31, 2014
Long-term Debt	(8) Long-term Debt
	Long-term debt consists of the following at December 31, 2014 and 2013:
			2014			2013
	Senior Credit Facility		$	353,750		$	502,106
	7 7/8% Senior Subordinated Notes			—			400,000
	5 7/8% Senior Subordinated Notes			500,000			500,000
	5% Senior Subordinated Notes			535,000			535,000
	5 3/8% Senior Notes			510,000			—
	Other notes with various rates and terms			1,145			1,696
				1,899,895			1,938,802
	Less current maturities			(15,625	)		(55,935	)
	Long-term debt excluding current maturities		$	1,884,270		$	1,882,867
	Long-term debt matures as follows:
	2015		$	15,625
	2016		$	21,118
	2017		$	39,375
	2018		$	45,000
	2019		$	233,750
	Later years		$	1,545,027
	7 7/8% Senior Subordinated Notes
	On April 22, 2010, Lamar Media issued $400,000 in aggregate principal amount of 7 7/8% Senior Subordinated Notes due 2018 (the “7 7/8% Notes”). The institutional private placement resulted in net proceeds to Lamar Media of approximately $392,000. On April 21, 2014, Lamar Media redeemed in full all $400,000 in aggregate principal amount of the 7 7/8% Notes. A loss of $20,847 was recorded as a result of this transaction, of which $5,095 was non-cash. No 7 7/8% Notes remained outstanding as of December 31, 2014.
	5 7/8% Senior Subordinated Notes
	On February 9, 2012, Lamar Media completed an institutional private placement of $500,000 aggregate principal amount of 5 7/8% Senior Subordinated Notes, due 2022 (the “5 7/8% Notes”). The institutional private placement resulted in net proceeds to Lamar Media of approximately $489,000.
	Lamar Media may redeem up to 35% of the aggregate principal amount of the 5 7/8% Notes, at any time and from time to time, at a price equal to 105.875% of the aggregate principal amount so redeemed, plus accrued and unpaid interest thereon, with the net cash proceeds of certain public equity offerings completed before February 1, 2015, provided that following the redemption, at least 65% of the 5 7/8% Notes that were originally issued remain outstanding. At any time prior to February 1, 2017, Lamar Media may redeem some or all of the 5 7/8% Notes at a price equal to 100% of the aggregate principal amount plus a make-whole premium. On or after February 1, 2017, Lamar Media may redeem the 5 7/8% Notes, in whole or in part, in cash at redemption prices specified in the 5 7/8% Notes. In addition, if the Company or Lamar Media undergoes a change of control, Lamar Media may be required to make an offer to purchase each holder’s 5 7/8% Notes at a price equal to 101% of the principal amount of the 5 7/8% Notes, plus accrued and unpaid interest, up to but not including the repurchase date.
	5% Senior Subordinated Notes
	On October 30, 2012, Lamar Media completed an institutional private placement of $535,000 aggregate principal amount of 5% Senior Subordinated Notes due 2023 (the “5% Notes”). The institutional private placement resulted in net proceeds to Lamar Media of approximately $527,100.
	Lamar Media may redeem up to 35% of the aggregate principal amount of the 5% Notes, at any time and from time to time, at a price equal to 105% of the aggregate principal amount so redeemed, plus accrued and unpaid interest thereon, with the net cash proceeds of certain public equity offerings completed before November 1, 2015, provided that following the redemption, at least 65% of the 5% Notes that were originally issued remain outstanding. At any time prior to May 1, 2018, Lamar Media may redeem some or all of the 5% Notes at a price equal to 100% of the aggregate principal amount plus a make-whole premium. On or after May 1, 2018, Lamar Media may redeem the 5% Notes, in whole or in part, in cash at redemption prices specified in the 5% Notes. In addition, if the Company or Lamar Media undergoes a change of control, Lamar Media may be required to make an offer to purchase each holder’s 5% Notes at a price equal to 101% of the principal amount of the 5% Notes, plus accrued and unpaid interest, up to but not including the repurchase date.
	5 3/8% Senior Notes
	On January 10, 2014, Lamar Media completed an institutional private placement of $510,000 aggregate principal amount of 5 3/8% Senior Notes due 2024 (the “5 3/8% Senior Notes”). The institutional private placement resulted in net proceeds to Lamar Media of approximately $502,300.
	Lamar Media may redeem up to 35% of the aggregate principal amount of the 5 3/8% Senior Notes, at any time and from time to time, at a price equal to 105 3/8% of the aggregate principal amount so redeemed, plus accrued and unpaid interest thereon, with the net cash proceeds of certain public equity offerings completed before January 15, 2017, provided that following the redemption, at least 65% of the 5 3/8% Senior Notes that were originally issued remain outstanding and any such redemption occurs within 120 days following the closing of any such public equity offering. At any time prior to January 15, 2019, Lamar Media may redeem some or all of the 5 3/8% Senior Notes at a price equal to 100% of the aggregate principal amount, plus accrued and unpaid interest thereon and a make-whole premium. On or after January 15, 2019, Lamar Media may redeem the 5 3/8% Senior Notes, in whole or in part, in cash at redemption prices specified in the 5 3/8% Senior Notes. In addition, if the Company or Lamar Media undergoes a change of control, Lamar Media may be required to make an offer to purchase each holder’s 5 3/8% Senior Notes at a price equal to 101% of the principal amount of the 5 3/8% Senior Notes, plus accrued and unpaid interest, up to but not including the repurchase date.
	Senior Credit Facility
	On January 10, 2014, Lamar Media paid in full the outstanding balance of the term loans then outstanding under its senior credit facility. The Company incurred a non-cash loss of $5,176 related to this transaction.
	On February 3, 2014, Lamar Media entered into a Second Restatement Agreement (the “Second Restatement Agreement”) with the Company, certain of Lamar Media’s subsidiaries as Guarantors, JPMorgan Chase Bank, N.A., as Administrative Agent and the Lenders named therein, under which the parties agreed to amend and restate Lamar Media’s existing senior credit facility on the terms set forth in the Second Amended and Restated Credit Agreement attached as Exhibit A to the Second Restatement Agreement (such Second and Amended and Restated Credit Agreement together with the Second Restatement Agreement being herein referred to as the “senior credit facility”). The senior credit facility consists of a $400,000 revolving credit facility and a $500,000 incremental facility. Lamar Media is the borrower under the senior credit facility. We may also from time to time designate wholly owned subsidiaries as subsidiary borrowers under the incremental loan facility. Incremental loans may be in the form of additional term loan tranches or increases in the revolving credit facility. Our lenders have no obligation to make additional loans to us, or any designated subsidiary borrower, under the incremental facility, but may enter into such commitments in their sole discretion.
	On April 18, 2014, Lamar Media entered into Amendment No. 1 to the Second Amended and Restated Credit Agreement (the “Amendment”) with Lamar Advertising, certain of Lamar Media’s subsidiaries as Guarantors, JPMorgan Chase Bank, N.A. as Administrative Agent and the Lenders named therein under which the parties agreed to amend Lamar Media’s existing senior credit facility on the terms set forth in the Amendment. The Amendment created a new $300,000 Term A Loan facility (the “Term A Loans”) and certain other amendments to the senior credit agreement. The Term A Loans are not incremental loans and do not reduce the existing $500,000 Incremental Loan facility. Lamar Media borrowed all $300,000 in Term A Loans on April 18, 2014. The net loan proceeds, together with borrowings under the revolving portion of the senior credit facility and cash on hand, were used to fund the redemption of all $400,000 in aggregate principal amount of Lamar Media’s 7 7/8% Notes due 2018 on April 21, 2014.
	The Term A Loans began amortizing on June 30, 2014 in quarterly installments on each September 30, December 31, March 31, and June 30 thereafter, as follows:
	Principal Payment Date		Principal Amount
	March 31, 2015-March 31, 2016		$	3,750
	June 30, 2016- March 31, 2017		$	5,625
	June 30, 2017-December 31, 2018		$	11,250
	Term A Loan Maturity Date		$	168,750
	The Term A loans and revolving credit facility bear interest at rates based on the Adjusted LIBO Rate (“Eurodollar loans”) or the Adjusted Base Rate (“Base Rate loans”), at Lamar Media’s option. Eurodollar loans bear interest at a rate per annum equal to the Adjusted LIBO rate plus 2.25% (or the Adjusted LIBO Rate plus 2.00% at any time the Total Debt Ratio is less than or equal to 4.25 to 1; or the Adjusted LIBO Rate plus 1.75% at any time the Total Debt Ratio is less than or equal to 3.00 to 1). Base Rate Loans bear interest at a rate per annum equal to the Adjusted Base Rate plus 1.00% (or the Adjusted Base Rate plus 0.75% at any time the Total Debt Ratio is less than or equal to 3.00 to 1). The guarantees, covenants, events of default and other terms of the senior credit facility apply to the Term A Loans and revolving credit facility.
	As of December 31, 2014, there was $65,000 outstanding under the revolving credit facility. Availability under the revolving facility is reduced by the amount of any letters of credit outstanding. Lamar Media had $6,846 letters of credit outstanding as of December 31, 2014 resulting in $328,154 of availability under its revolving facility. Revolving credit loans may be requested under the revolving credit facility at any time prior to its maturity on February 2, 2019, and bear interest, at Lamar Media’s option, at the Adjusted LIBO Rate or the Adjusted Base Rate plus applicable margins, such margins are set at an initial rate with the possibility of a step down based on Lamar Media’s ratio of debt to trailing four quarters EBITDA, as defined in the senior credit facility.
	The terms of Lamar Media’s senior credit facility and the indentures relating to Lamar Media’s outstanding notes restrict, among other things, the ability of Lamar Advertising and Lamar Media to:
		•		dispose of assets;
		•		incur or repay debt;
		•		create liens;
		•		make investments; and
		•		pay dividends.
	The senior credit facility contains provisions that would allow Lamar Media to conduct its affairs in a manner that would allow Lamar Advertising to qualify and remain qualified as a REIT, including by allowing Lamar Media to make distributions to Lamar Advertising required for the Company to qualify and remain qualified for taxation as a REIT, subject to certain restrictions.
	Lamar Media’s ability to make distributions to Lamar Advertising is also restricted under the terms of these agreements. Under Lamar Media’s senior credit facility the Company must maintain a specified senior debt ratio at all times and in addition, must satisfy a total debt ratio in order to incur debt, make distributions or make certain investments.
	Lamar Advertising and Lamar Media were in compliance with all of the terms of their indentures and the applicable senior credit agreement provisions during the periods presented.
LAMAR MEDIA CORP [Member]
Long-term Debt	(5) Long-term Debt
	Long-term debt consists of the following at December 31, 2014 and 2013:
			2014			2013
	Senior Credit Agreement		$	353,750		$	502,106
	7 7/8% Senior Subordinated Notes			—			400,000
	5 7/8% Senior Subordinated Notes			500,000			500,000
	5% Senior Subordinated Notes			535,000			535,000
	5 3/8% Senior Notes			510,000			—
	Other notes with various rates and terms			1,145			1,696
				1,899,895			1,938,802
	Less current maturities			(15,625	)		(55,935	)
	Long-term debt excluding current maturities		$	1,884,270		$	1,882,867
	Long-term debt matures as follows:
	2015		$	15,625
	2016		$	21,118
	2017		$	39,375
	2018		$	45,000
	2019		$	233,750
	Later years		$	1,545,027

Asset_Retirement_Obligation

Asset Retirement Obligation	12 Months Ended
	Dec. 31, 2014
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligation	(9) Asset Retirement Obligation
	The Company’s asset retirement obligation includes the costs associated with the removal of its structures, resurfacing of the land and retirement cost, if applicable, related to the Company’s outdoor advertising portfolio. The following table reflects information related to our asset retirement obligations:
	Balance at December 31, 2012	$	189,659
	Additions to asset retirement obligations		3,741
	Accretion expense		11,046
	Liabilities settled		(3,615	)
	Balance at December 31, 2013		200,831
	Additions to asset retirement obligations		1,238
	Accretion expense		5,262
	Liabilities settled		(3,004	)
	Balance at December 31, 2014	$	204,327

Depreciation_and_Amortization

Depreciation and Amortization	12 Months Ended
	Dec. 31, 2014
Text Block [Abstract]
Depreciation and Amortization	(10) Depreciation and Amortization
	The Company includes all categories of depreciation and amortization on a separate line in its Statements of Operations. The amounts of depreciation and amortization expense excluded from the following operating expenses in its Statements of Operations are:
		Year Ended December 31,
		2014		2013		2012
	Direct expenses	$	241,471	$	283,280	$	277,662
	General and administrative expenses		4,534		4,684		4,137
	Corporate expenses		12,430		12,615		14,284
		$	258,435	$	300,579	$	296,083

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2014
Income Taxes	(11) Income Taxes
	The Company has filed, for prior taxable years through its taxable year ended December 31, 2014, a consolidated U.S. federal tax return, which includes all of its wholly owned domestic subsidiaries. For its taxable year commencing January 1, 2014, the Company intends to file as a REIT, and its TRSs intend to file as C corporations. The Company also files tax returns in various states and countries. The Company’s state tax returns reflect different combinations of the Company’s subsidiaries and are dependent on the connection each subsidiary has with a particular state. The following information pertains to the Company’s income taxes on a consolidated basis.
	Income tax expense (benefit) consists of the following:
			Current			Deferred			Total
	Year ended December 31, 2014:
	U.S. federal		$	8,721		$	(119,014	)	$	(110,293	)
	State and local			2,632			(2,909	)		(277	)
	Foreign			692			(214	)		478
			$	12,045		$	(122,137	)	$	(110,092	)
	Year ended December 31, 2013:
	U.S. federal		$	930		$	21,681		$	22,611
	State and local			1,609			1,165			2,774
	Foreign			1,553			(4,097	)		(2,544	)
			$	4,092		$	18,749		$	22,841
	Year ended December 31, 2012:
	U.S. federal		$	—		$	6,743		$	6,743
	State and local			823			826			1,649
	Foreign			1,103			(1,253	)		(150	)
			$	1,926		$	6,316		$	8,242
	The income tax provision for the year ended December 31, 2014 is net of the deferred tax benefit due to the REIT conversion of $120,081. As of December 31, 2014 and 2013, the Company had income taxes payable of $308 and $848, respectively, included in accrued expenses. The U.S. and foreign components of earnings before income taxes are as follows:
			2014			2013			2012
	U.S.		$	144,298		$	62,506		$	17,279
	Foreign			(872	)		474			(1,147	)
	Total		$	143,426		$	62,980		$	16,132
	A reconciliation of significant differences between the reported amount of income tax expense and the expected amount of income tax expense that would result from applying the U.S. federal statutory income tax rate of 35 percent to income before taxes is as follows:
			2014			2013			2012
	Income tax expense at U.S. federal statutory rate		$	50,199		$	22,043		$	5,646
	Tax adjustment related to REIT (a)			(44,891	)		—			—
	State and local income taxes, net of federal income tax benefit			1,017			3,585			1,541
	Book expenses not deductible for tax purposes			2,061			1,351			1,058
	Stock-based compensation			(33	)		65			270
	Valuation allowance			—			(1,097	)		(331	)
	Rate change (b)			91			(2,565	)		49
	Deferred tax adjustment due to REIT conversion			(120,081	)		—			—
	Other differences, net			1,545			(541	)		9
	Income tax expense		$	(110,092	)	$	22,841		$	8,242
	(a)	Includes dividend paid deduction of $62,937.
	(b)	In 2013, the “Tax Burden Adjustment and Redistribution Act” was signed into law. Under the enacted legislation, the Puerto Rico corporate income tax rate was increased to 39% from 30%. As a result, a non-cash benefit of $2,479 to income tax expense was recorded for the increase of the Puerto Rico net deferred tax asset. Also in 2013, British Columbia Bill 2 was signed into law. The enacted legislation increased the general corporate income tax rate to 11% from 10%. As a result, a non-cash benefit of $86 to income tax expense was recorded for the increase of the Canadian net deferred tax asset.
	The tax effect of temporary differences that give rise to significant portions of the deferred tax assets and (liabilities) are presented below:
			2014			2013
	Deferred tax assets:
	Allowance for doubtful accounts		$	255		$	2,972
	Accrued liabilities not deducted for tax purposes			4,703			37,764
	Asset retirement obligation			79			70,166
	Net operating loss carry forwards			11,881			138,865
	Tax credit carry forwards			209			4,844
	Charitable contributions carry forward			9			9
	Property, plant and equipment			65			—
	Investment in partnerships			354			—
	Gross deferred tax assets			17,555			254,620
	Less: valuation allowance			(9	)		(2,331	)
	Net deferred tax assets			17,546			252,289
	Deferred tax liabilities:
	Property, plant and equipment			—			(45,160	)
	Intangibles			(4,321	)		(314,382	)
	Investment in partnerships			—			(1,519	)
	Gross deferred tax liabilities			(4,321	)		(361,061	)
	Net deferred tax assets (liabilities)		$	13,225		$	(108,772	)
	Classification in the consolidated balance sheets:
	Current deferred tax assets		$	729		$	10,378
	Current deferred tax liabilities			—			—
	Noncurrent deferred tax assets			12,496			—
	Noncurrent deferred tax liabilities			—			(119,150	)
	Net deferred tax assets (liabilities)		$	13,225		$	(108,772	)
As of December 31, 2014, we have approximately $257,839 of U.S. net operating loss carry forwards to offset future taxable income. Of this amount, $6,063 is subject to an IRC §382 limitation. These carry forwards expire between 2020 through 2032. In addition, we have $4,822 of various credits available to offset future U.S. federal income tax.
As of December 31, 2014 we have approximately $449,691 of state net operating loss carry forwards before valuation allowances. These state net operating losses are available to reduce future taxable income and expire at various times and amounts. In addition, we have $241 of various credits available to offset future state income tax. The valuation allowance related to state net operating loss carry forwards as of December 31, 2014 and 2013 was $0 and $2,323, respectively. The net change in the total valuation allowance for each of the years ended December 31, 2014, 2013, and 2012 was a decrease of $2,322, $1,087 and $332, respectively. The decrease in 2014 was primarily due to the adjustment of deferred tax assets and related valuation allowance for assets and liabilities of REIT operations no longer subject to state income taxes at the REIT level, which had the effect of valuing these assets at an expected rate of 0%.
During 2014, we generated $1,454 of Puerto Rico net operating losses. As of December 31, 2014, we had approximately $28,354 of Puerto Rico net operating losses available to offset future taxable income. These carry forwards expire between 2016 and 2024. In addition, we have $209 of alternative minimum tax credits available to offset future Puerto Rico income tax.
In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income in those jurisdictions during the periods in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities (including the impact of available carry back and carry forward periods), projected future taxable income, and tax-planning strategies in making this assessment. In order to fully realize the deferred tax assets, the Company will need to generate future taxable income before the expiration of the carry forwards governed by the tax code. Based on the current level of pretax earnings, the Company will generate the minimum amount of future taxable income to support the realization of the deferred tax assets. Additionally, the Company has deferred tax liabilities that will reverse during the same period and jurisdiction and are of the same character as the temporary differences giving rise to the deferred tax assets. As a result, management believes that it is more likely than not that we will realize the benefits of these deferred tax assets, net of the existing valuation allowances at December 31, 2014. The amount of the deferred tax asset considered realizable, however, could be reduced in the near term if estimates of future taxable income during the carry forward period are reduced.
We have not recognized a deferred tax liability of approximately $8,326 for the undistributed earnings of our Canadian operations that arose in 2014 and prior years as management considers these earnings to be indefinitely invested outside the U.S. As of December 31, 2014, the undistributed earnings of these subsidiaries were approximately $23,789.
Under ASC 740, we provide for uncertain tax positions, and the related interest, and adjust recognized tax benefits and accrued interest accordingly. A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:
Balance as of December 31, 2012		$	75
Additions for tax positions related to current year			1
Additions for tax positions related to prior years			—
Reductions for tax positions related to prior years			—
Lapse of statute of limitations			(41	)
Settlements			—
Balance as of December 31, 2013		$	35
Additions for tax positions related to current year			—
Additions for tax positions related to prior years			—
Reductions for tax positions related to prior years			—
Lapse of statute of limitations			(35	)
Settlements			—
Balance as of December 31, 2014		$	—
As of December 31, 2014, we do not have any unrecognized tax benefits that, if recognized in future periods, would impact our effective tax rate.
We are subject to income taxes in the U.S. and nearly all states. In addition, the Company is subject to income taxes in Canada and the Commonwealth of Puerto Rico. We are no longer subject to U.S federal income tax examinations by tax authorities for years before 2010 since the IRS has completed review of our income tax returns through 2009, or for any U.S. state income tax audit prior to 2002. With respect to Canada and Puerto Rico, we are no longer subject to income tax audits for years before 2009 and 2008, respectively.
LAMAR MEDIA CORP [Member]
Income Taxes	(6) Income Taxes
	Income tax expense (benefit) consists of the following:
			Current			Deferred			Total
	Year ended December 31, 2014:
	U.S. federal			8,993			(151,191	)		(142,198	)
	State and local			2,579			(4,124	)		(1,545	)
	Foreign			692			(213	)		479
			$	12,264		$	(155,528	)	$	(143,264	)
	Year ended December 31, 2013:
	U.S. federal		$	930		$	21,798		$	22,728
	State and local			1,609			1,184			2,793
	Foreign			1,553			(4,097	)		(2,544	)
			$	4,092		$	18,885		$	22,977
	Year ended December 31, 2012:
	U.S. federal		$	—		$	6,859		$	6,859
	State and local			824			820			1,644
	Foreign			1,103			(1,253	)		(150	)
			$	1,927		$	6,426		$	8,353
	The income tax provision for the year ended December 31, 2014 is net of the deferred tax benefit due to REIT conversion of approximately $153.472. As of December 31, 2014 and December 31, 2013, the Company had income taxes payable of $308 and $630, respectively, included in accrued expenses.
	The U.S. and foreign components of earnings before income taxes are as follows:
			2014			2013			2012
	U.S.		$	144,643		$	62,841		$	17,615
	Foreign			(872	)		474			(1,147	)
	Total		$	143,771		$	63,315		$	16,468
	A reconciliation of significant differences between the reported amount of income tax expense and the expected amount of income tax expense that would result from applying the U.S. federal statutory income tax rate of 35 percent to income before taxes is as follows:
			2014			2013			2012
	Income tax expense at U.S. federal statutory rate		$	50,320		$	22,160		$	5,764
	Tax adjustment related to REIT (a)			(45,012	)		—			—
	State and local income taxes, net of federal income tax benefit			1,017			3,601			1,557
	Book expenses not deductible for tax purposes			2,061			1,351			1,058
	Stock-based compensation			(33	)		65			270
	Valuation allowance			—			(1,094	)		(354	)
	Rate Change (b)			91			(2,565	)		49
	Deferred tax adjustment due to REIT conversion			(153,472	)		—			—
	Other differences, net			1,764			(541	)		9
	Income tax expense		$	(143,264	)	$	22,977		$	8,353
	(a)	Includes dividend paid deduction of $63,058.
	(b)	In 2013, the “Tax Burden Adjustment and Redistribution Act” was signed into law. Under the enacted legislation, the Puerto Rico corporate income tax rate was increased to 39% from 30%. As a result, a non-cash benefit of $2,479 to income tax expense was recorded for the increase of the Puerto Rico net deferred tax asset. Also in 2013, British Columbia Bill 2 was signed into law. The enacted legislation increased the general corporate income tax rate to 11% from 10%. As a result, a non-cash benefit of $86 to income tax expense was recorded for the increase of the Canadian net deferred tax asset.
	The tax effect of temporary differences that give rise to significant portions of the deferred tax assets and (liabilities) are presented below:
			2014			2013
	Deferred tax assets:
	Allowance for doubtful accounts		$	255		$	2,972
	Accrued liabilities not deducted for tax purposes			4,703			37,764
	Asset retirement obligation			79			70,166
	Net operating loss carry forwards			11,881			89,496
	Tax credit carry forwards			209			19,615
	Charitable contributions carry forward			9			9
	Property, plant and equipment			65			—
	Investment in partnership			354			—
	Gross deferred tax assets			17,555			220,022
	Less: valuation allowance			(9	)		(1,760	)
	Net deferred tax assets			17,546			218,262
	Deferred tax liabilities:
	Property, plant and equipment			—			(45,160	)
	Intangibles			(4,321	)		(313,746	)
	Investment in partnerships			—			(1,519	)
	Gross deferred tax liabilities			(4,321	)		(360,425	)
	Net deferred tax assets (liabilities)		$	13,225		$	(142,163	)
	Classification in the consolidated balance sheets:
	Current deferred tax assets		$	729		$	10,378
	Current deferred tax liabilities			—			—
	Noncurrent deferred tax assets			12,496			—
	Noncurrent deferred tax liabilities			—			(152,541	)
	Net deferred tax liabilities		$	13,225		$	(142,163	)
As of December 31, 2014, we have approximately $122,078 of U.S. net operating loss carry forwards to offset future taxable income. Of this amount, $6,063 is subject to an IRC §382 limitation. These carry forwards expire between 2020 and 2032. In addition, we have $19,593 of various credits available to offset future U.S. federal income tax.
As of December 31, 2014, we have approximately $411,970 state net operating loss carry forwards before valuation allowances. These state net operating losses are available to reduce future taxable income and expire at various times and amounts. In addition, we have $241 of various credits available to offset future state income tax. The valuation allowance for these deferred tax assets as of December 31, 2014 and December 31, 2013 was $0 and $1,751, respectively. The net change in the total valuation allowance for each of the years ended December 31, 2014, 2013, and 2012 was a decrease of $1,751, $1,085 and $356, respectively. The decrease in 2014 was primarily due to the adjustment of deferred tax assets and related to valuation allowance for assets and liabilities of REIT operations no longer subject to state income taxes at the REIT level, which had the effect of valuing these assets at an expected rate of 0%.
During 2014, we generated $1,454 of Puerto Rico net operating losses. As of December 31, 2014, we had approximately $28,354 of Puerto Rico net operating losses available to offset future taxable income. These carry forwards expire between 2016 and 2024. In addition, we have $209 of alternative minimum tax credits available to offset future Puerto Rico income tax.
In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income in those jurisdictions during the periods in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities (including the impact of available carry back and carry forward periods), projected future taxable income, and tax-planning strategies in making this assessment. In order to fully realize the deferred tax assets, the Company will need to generate future taxable income before the expiration of the carry forwards governed by the tax code. Based on the current level of pretax earnings for financial reporting purposes, we will generate the minimum amount of future taxable income to support the realization of the deferred tax assets. Additionally, the Company has deferred tax liabilities that will reverse during the same period and jurisdiction and is of the same character as the temporary differences giving rise to the deferred tax assets.
As a result, management believes that it is more likely than not that we will realize the benefits of these deferred tax assets, net of the existing valuation allowances at December 31, 2014. The amount of the deferred tax asset considered realizable, however, could be reduced in the near term if estimates of future taxable income during the carry forward period are reduced.
We have not recognized a deferred tax liability of approximately $8,326 for the undistributed earnings of our Canadian operations that arose in 2014 and prior years as management considers these earnings to be indefinitely invested outside the U.S. As of December 31, 2014, the undistributed earnings of these subsidiaries were approximately $23,789.
Under ASC 740, we provide for uncertain tax positions, and the related interest, and adjust recognized tax benefits and accrued interest accordingly. A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:
Balance as of December 31, 2012		$	75
Additions for tax positions related to current year			1
Additions for tax positions related to prior years			—
Reductions for tax positions related to prior years			—
Lapse of statute of limitations			(41	)
Settlements			—
Balance as of December 31, 2013		$	35
Additions for tax positions related to current year			—
Additions for tax positions related to prior years			—
Reductions for tax positions related to prior years			—
Lapse of statute of limitations			(35	)
Settlements			—
Balance as of December 31, 2014		$	—
As of December 31, 2014, we do not have any unrecognized tax benefits that, if recognized in future periods, would impact our effective tax rate.
We are subject to income taxes in the U.S. and nearly all states. In addition, the Company is subject to income taxes in Canada and the Commonwealth of Puerto Rico. We are no longer subject to U.S federal income tax examinations by tax authorities for years before 2010 since the IRS has completed review of our income tax returns through 2009, or for any U.S. state income tax audit prior to 2002. With respect to Canada and Puerto Rico, we are no longer subject to income tax audits for years before 2009 and 2008, respectively.

Related_Party_Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2014
Related Party Transactions	(12) Related Party Transactions
	Affiliates, as used within these statements, are persons or entities that are affiliated with Lamar Advertising Company or its subsidiaries through common ownership and directorate control.
	Prior to 1996, the Company entered into various related party transactions for the purchase and sale of advertising structures whereby any resulting gains were deferred at that date. As of December 31, 2014 and 2013, the deferred gains related to these transactions were $85, respectively, and are included in deferred income on the balance sheets. No gains related to these transactions have been realized in the Statements of Operations for the years ended December 31, 2014, 2013 and 2012.
	In addition, the Company had receivables from employees of $246 and $126 at December 31, 2014 and 2013, respectively. These receivables are primarily relocation loans for employees. The Company does not have any receivables from its current executive officers.
	In June 2011, the Company entered into a service contract with Joule Energy LA, LLC (“Joule”), of which Ross L. Reilly was a member and owned 26.66% interest. Mr. Reilly sold his entire interest in Joule during 2014. Joule provides services related to the Company’s installation of solar arrays in the State of Louisiana, which services were completed in 2014. In addition, from time to time beginning in 2012, Joule provides lighting installation services for certain of Lamar Advertising’s billboards in the state of Louisiana. As of December 31, 2014, the aggregate amount paid to Joule under the service contract was approximately $1,914. Ross L. Reilly is the son of Kevin P. Reilly, Jr., our Chairman of the Board of Directors and President.
LAMAR MEDIA CORP [Member]
Related Party Transactions	(7) Related Party Transactions
	Affiliates, as used within these statements, are persons or entities that are affiliated with Lamar Media Corp. or its subsidiaries through common ownership and directorate control.
	As of December 31, 2014 and December 31, 2013, there was a payable to Lamar Advertising Company, its parent, in the amount of $6,955 and $7,665, respectively.
	Effective December 31, 2014 and December 31, 2013, Lamar Advertising Company contributed $38,201 and $37,858 respectively, to Lamar Media which resulted in an increase in Lamar Media’s additional paid-in capital.

Stockholders_Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2014
Equity [Abstract]
Stockholders' Equity	(13) Stockholders’ Equity
	On July 16, 1999, the Board of Directors designated 5,720 shares of the 1,000,000 shares of previously undesignated preferred stock, par value $.001, as Series AA preferred stock. The Class A preferred stock, par value $638, was exchanged for the new Series AA preferred stock and no shares of Class A preferred stock are currently outstanding. The new Series AA preferred stock and the class A preferred stock rank senior to the Class A common stock and Class B common stock with respect to dividends and upon liquidation. Holders of Series AA preferred stock and Class A preferred stock are entitled to receive, on a pari passu basis, dividends at the rate of $15.95 per share per quarter when, as and if declared by the Board of Directors. The Series AA preferred stock and the Class A preferred stock are also entitled to receive, on a pari passu basis, $638 plus a further amount equal to any dividend accrued and unpaid to the date of distribution before any payments are made or assets distributed to the Class A common stock or Class B stock upon voluntary or involuntary liquidation, dissolution or winding up of the Company. The liquidation value of the outstanding Series AA preferred stock at December 31, 2014 was $3,649. The Series AA preferred stock and the Class A preferred stock are identical, except that the Series AA preferred stock is entitled to one vote per share and the Class A preferred stock is not entitled to vote.
	All of the outstanding shares of common stock are fully paid and nonassessable. In the event of the liquidation or dissolution of the Company, following any required distribution to the holders of outstanding shares of preferred stock, the holders of common stock are entitled to share pro rata in any balance of the corporate assets available for distribution to them. The Company may pay dividends if, when and as declared by the Board of Directors from funds legally available therefore, subject to the restrictions set forth in the Company’s existing indentures and the senior credit facility. Subject to the preferential rights of the holders of any class of preferred stock, holders of shares of common stock are entitled to receive such dividends as may be declared by the Company’s Board of directors out of funds legally available for such purpose. No dividend may be declared or paid in cash or property on any share of either class of common stock unless simultaneously the same dividend is declared or paid on each share of the other class of common stock, provided that, in the event of stock dividends, holders of a specific class of common stock shall be entitled to receive only additional shares of such class.
	The rights of the Class A and Class B common stock are equal in all respects, except holders of Class B common stock have ten votes per share on all matters in which the holders of common stock are entitled to vote and holders of Class A common stock have one vote per share on such matters. The Class B common stock will convert automatically into Class A common stock upon the sale or transfer to persons other than permitted transferees (as defined in the Company’s certificate of incorporation, as amended).
	For the year ended December 31, 2014, the Company completed its REIT conversion and merger. In connection with the merger each share of the Company’s then outstanding 17,270,930 treasury shares valued at $896,818, ceased to exist and returned to unissued status through a $17 and $896,801 reduction of Class A common stock and additional paid-in capital, respectively.
	On December 11, 2014, the Company announced that its Board of Directors has authorized the repurchase of up to $250,000 of the Company’s Class A common stock (the “repurchase program”). There were no repurchases under the repurchase program for the year ended December 31, 2014.

Stock_Compensation_Plans

Stock Compensation Plans	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Compensation Plans	(14) Stock Compensation Plans
	Equity Incentive Plan. Lamar’s 1996 Equity Incentive Plan, as amended, (the “Incentive Plan”) has reserved 15.5 million shares of common stock for issuance to directors and employees, including options granted and common stock reserved for issuance under its performance-based incentive program. Options granted under the plan expire ten years from the grant date with vesting terms ranging from three to five years which primarily includes 1) options that vest in one-fifth increments beginning on the grant date and continuing on each of the first four anniversaries of the grant date and 2) options that cliff-vest on the fifth anniversary of the grant date. All grants are made at fair market value based on the closing price of our Class A common stock as reported on the NASDAQ Global Select Market on the date of grant.
	In February 2013, the plan was amended to eliminate the provision that limited the amount of Class A Common Stock, including shares retained from an award, that could be withheld to satisfy tax withholding obligations to the minimum tax obligations required by law (except with respect to option awards). In accordance with ASC 718, the Company is required to classify the awards affected by the amendment as liability-classified awards at fair value each period prior to their settlement. As of December 31, 2014 and 2013, the Company recorded a liability, in accrued expenses, of $13,283 and $6,757, respectively, related to its equity incentive awards affected by this amendment.
	We use a Black-Scholes-Merton option pricing model to estimate the fair value of share-based awards. The Black-Scholes-Merton option pricing model incorporates various highly subjective assumptions, including expected term and expected volatility. We have reviewed our historical pattern of option exercises and have determined that meaningful differences in option exercise activity existed among vesting schedules. Therefore, for all stock options granted after January 1, 2006, we have categorized these awards into two groups of vesting 1) 5-year cliff vest and 2) 4-year graded vest, for valuation purposes. We have determined there were no meaningful differences in employee activity under our ESPP due to the nature of the plan.
	We estimate the expected term of options granted using an implied life derived from the results of a hypothetical mid-point settlement scenario, which incorporates our historical exercise, expiration and post-vesting employment termination patterns, while accommodating for partial life cycle effects. We believe these estimates will approximate future behavior.
	We estimate the expected volatility of our Class A common stock at the grant date using a blend of 90% historical volatility of our Class A common stock and 10% implied volatility of publicly traded options with maturities greater than six months on our Class A common stock as of the option grant date. Our decision to use a blend of historical and implied volatility was based upon the volume of actively traded options on our common stock and our belief that historical volatility alone may not be completely representative of future stock price trends.
	Our risk-free interest rate assumption is determined using the Federal Reserve nominal rates for U.S. Treasury zero-coupon bonds with maturities similar to those of the expected term of the award being valued. We assumed an expected dividend yield of 2%.
	We estimate option forfeitures at the time of grant and periodically revise those estimates in subsequent periods if actual forfeitures differ from those estimates. We record stock-based compensation expense only for those awards expected to vest using an estimated forfeiture rate based on our historical forfeiture data.
	The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions used:
	Grant Year	Dividend			Expected			Risk Free			Expected
		Yield			Volatility			Interest Rate			Lives
	2014		2	%		48	%		1	%		6
	2013		0	%		51	%		1	%		6
	2012		0	%		52	%		2	%		5
	Information regarding the 1996 Plan for the year ended December 31, 2014 is as follows:
		Shares			Weighted			Weighted
					Average			Average
					Exercise			Contractual
					Price			Life
	Outstanding, beginning of year		3,232,423		$	32.89
	Granted		87,000			51.04
	Exercised		(522,032	)		31.12
	Forfeited		(12,200	)		43.89
	Expired		(10,600	)		28.13
	Outstanding, end of year		2,774,591		$	33.76			6.66
	Exercisable at end of year		1,622,891		$	27.54			5.63
	At December 31, 2014 there was $17,017 of unrecognized compensation cost related to stock options granted which is expected to be recognized over a weighted-average period of 1.55 years.
	Shares available for future stock option and restricted share grants to employees and directors under existing plans were 2,632,628 at December 31, 2014. The aggregate intrinsic value of options outstanding as of December 31, 2014 was $55,169, and the aggregate intrinsic value of options exercisable was $42,350. Total intrinsic value of options exercised was $10,806 for the year ended December 31, 2014.
	Stock Purchase Plan. In 2009 our board of directors adopted a new employee stock purchase plan, the 2009 Employee Stock Purchase Plan or 2009 ESPP, which was approved by our shareholders on May 28, 2009. The 2009 ESPP reserved 588,154 shares of Class A common stock for issuance to our employees, which included 88,154 shares of Class A common stock that had been available for issuance under our 2000 Employee Stock Purchase Plan or 2000 ESPP. The 2000 ESPP was terminated following the issuance of all shares that were subject to the offer that commenced under the 2000 ESPP on January 1, 2009 and ended June 30, 2009. The terms of the 2009 ESPP are substantially the same as the 2000 ESPP.
	The number of shares of Class A common stock available under the 2009 ESPP was automatically increased by 80,209 shares on January 1, 2014 pursuant to the automatic increase provisions of the 2009 ESPP. The following is a summary of 2009 ESPP share activity for the year ended December 31, 2014:
		Shares
	Available for future purchases, January 1, 2014		327,689
	Additional shares reserved under 2009 ESPP		80,209
	Purchases		(100,450	)
	Available for future purchases, December 31, 2014		307,448
	Performance-based compensation. Unrestricted shares of our Class A common stock may be awarded to key officers and employees under our 1996 Plan based on certain Company performance measures for fiscal 2014. The number of shares to be issued; if any, are dependent on the level of achievement of these performance measures as determined by the Company’s Compensation Committee based on our 2014 results and were issued in the first quarter of 2015. The shares subject to these awards can range from a minimum of 0% to a maximum of 100% of the target number of shares depending on the level at which the goals are attained. Based on the Company’s performance measures achieved through December 31, 2014, the Company has accrued $14,210 as compensation expense related to these agreements.

Benefit_Plans

Benefit Plans	12 Months Ended
	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Benefit Plans	(15) Benefit Plans
	The Company sponsors a partially self-insured group health insurance program. The Company is obligated to pay all claims under the program, which are in excess of premiums, up to program limits. The Company is also self-insured with respect to its income disability benefits and against casualty losses on advertising structures. Amounts for expected losses, including a provision for losses incurred but not reported, is included in accrued expenses in the accompanying consolidated financial statements. As of December 31, 2014, the Company maintained $6,624 in letters of credit with a bank to meet requirements of the Company’s worker’s compensation and general liability insurance carrier.
	Savings and Profit Sharing Plan
	The Company sponsors The Lamar Corporation Savings and Profit Sharing Plan covering eligible employees who have completed one year of service and are at least 21 years of age. The Company has the option to match 50% of employees’ contributions up to 5% of eligible compensation. Employees can contribute up to 100% of compensation. Full vesting on the Company’s matched contributions occurs after three years for contributions made after January 1, 2002. Annually, at the Company’s discretion, an additional profit sharing contribution may be made on behalf of each eligible employee. The Company matched contributions of $3,973, $3,581 and $3,184 for the years ended December 31, 2014, 2013 and 2012, respectively.
	Deferred Compensation Plan
	The Company sponsors a Deferred Compensation Plan for the benefit of certain of its board-elected officers who meet specific age and years of service and other criteria. Officers that have attained the age of 30 and have a minimum of 10 years of service to the Company and satisfying additional eligibility guidelines are eligible for annual contributions to the Plan generally ranging from $3 to $8, depending on the employee’s length of service. The Company’s contributions to the Plan are maintained in a rabbi trust and, accordingly, the assets and liabilities of the Plan are reflected in the balance sheet of the Company in other assets and other liabilities. Upon termination, death or disability, participating employees are eligible to receive an amount equal to the fair market value of the assets in the employee’s deferred compensation account. For the years ended December 31, 2014, 2013 and 2012, the Company contributed $1,400, $1,323 and $1,260, respectively.
	On December 8, 2005, the Company’s Board of Directors approved an amendment to the Lamar Deferred Compensation Plan in order to (1) to comply with the requirements of Section 409A of the Internal Revenue Code (“Section 409A”) applicable to deferred compensation and (2) to reflect changes in the administration of the Plan. The Company’s Board of Directors also approved the adoption of a grantor trust pursuant to which amounts may be set aside, but remain subject to claims of the Company’s creditors, for payments of liabilities under the new plan, including amounts contributed under the old plan. The plan was further amended in August 2007 to make certain amendments to reflect Section 409A regulations issued on April 10, 2007. An additional clarifying amendment was made to the plan in December 2013.

Commitment_and_Contingencies

Commitment and Contingencies	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitment and Contingencies	(16) Commitment and Contingencies
	The Company is involved in various other claims and legal actions arising in the ordinary course of business. In the opinion of management, the ultimate disposition of these matters will not have a material adverse effect on the Company’s consolidated financial position, results of operations, or liquidity.

Summarized_Financial_Informati

Summarized Financial Information of Subsidiaries	12 Months Ended
	Dec. 31, 2014
Text Block [Abstract]
Summarized Financial Information of Subsidiaries	(17) Summarized Financial Information of Subsidiaries
	Separate financial statements of each of the Company’s direct or indirect wholly owned subsidiaries that have guaranteed Lamar Media’s obligations with respect to its publicly issued notes (collectively, the “Guarantors”) are not included herein because the Company has no independent assets or operations, the guarantees are full and unconditional and joint and several, and the only subsidiaries that are not guarantors are in the aggregate minor.
	Lamar Media’s ability to make distributions to Lamar Advertising is restricted under both the terms of the indentures relating to Lamar Media’s outstanding notes and by the terms of its senior credit facility. As of December 31, 2014 and December 31, 2013, Lamar Media was permitted under the terms of its outstanding senior subordinated and senior notes to make transfers to Lamar Advertising in the form of cash dividends, loans or advances in amounts up to $2,269,393 and $2,072,542, respectively.
	As of December 31, 2014, transfers to Lamar Advertising are permitted under Lamar Media’s senior credit facility and as defined therein, unless, after giving effect such distributions, (i) the total debt ratio is equal to or greater than 6.0 to 1 or (ii) the senior debt ratio is equal to or greater than 3.5 to 1. As of December 31, 2014, the total debt ratio was less than 6.0 to 1 and Lamar Media’s senior debt ratio was less than 3.5 to 1; therefore, dividends or distributions to Lamar Advertising were not subject to any additional restrictions under the senior credit facility. In addition, as of December 31, 2014 the senior credit facility allows Lamar Media to conduct its affairs in a manner that would allow Lamar Advertising to qualify and remain qualified for taxation as a REIT, including by allowing Lamar Media to make distributions to Lamar Advertising required for Lamar Advertising to qualify and remain qualified for taxation as a REIT, subject to certain restrictions.

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	(18) Fair Value of Financial Instruments
	At December 31, 2014 and 2013, the Company’s financial instruments included cash and cash equivalents, marketable securities, accounts receivable, investments, accounts payable and borrowings. The fair values of cash and cash equivalents, accounts receivable, accounts payable and short-term borrowings and current portion of long-term debt approximated carrying values because of the short-term nature of these instruments. Investments and initial recognition of asset retirement obligations are reported at fair values. Fair values for investments held at cost are not readily available, but are estimated to approximate fair value. The estimated fair value of the Company’s long term debt (including current maturities) was $1,933,254, which exceeded both the gross and carrying amount of $1,899,895 as of December 31, 2014. The majority of the fair value is determined using observed prices of publicly traded debt (level 1 in the fair value hierarchy) and the remaining is valued based on quoted prices for similar debt (level 2 in the fair value hierarchy).

Information_about_Geographic_A

Information about Geographic Areas	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Information about Geographic Areas	(19) Information about Geographic Areas
	Revenues from external customers attributable to foreign countries totaled $33,124 and $34,013 for the years ended December 31, 2014 and 2013, respectively. Net carrying value of long lived assets located in foreign countries totaled $7,324 and $8,838 as of December 31, 2014 and 2013, respectively. All other revenues from external customers and long lived assets relate to domestic operations.

New_Accounting_Pronouncements

New Accounting Pronouncements	12 Months Ended
	Dec. 31, 2014
Text Block [Abstract]
New Accounting Pronouncements	(20) New Accounting Pronouncements
	In January 2014, the FASB issued guidance on the accounting for service concession arrangements with public sector entities. This guidance specifies that an operating entity should not account for a service concession arrangement as a lease and the infrastructure used in a service concession arrangement should not be recognized as property, plant and equipment. This guidance applies when the public sector entity controls the services that the operating entity must provide within the infrastructure and also controls any residual interest in the infrastructure at the end of the term of the arrangement. We are currently evaluating the impact of this guidance, which is effective for reporting periods beginning after December 15, 2014, on our consolidated financial statements.
	On May 28, 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard is effective for the Company on January 1, 2017. Early application is not permitted. The standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the effect that ASU 2014-09 will have on its consolidated financial statements and related disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on its ongoing financial reporting.

Quarterly_Financial_Data_Unaud

Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Data (Unaudited)	(21) Quarterly Financial Data (Unaudited)
	The tables below represent the balances for the selected quarterly financial data of the Company for each reporting period in the years ended December 31, 2014 and 2013.
		Year 2014 Quarters
		March 31			June 30		September 30		December 31
	Net revenues	$	284,933		$	330,433	$	334,998	$	336,696
	Net revenues less direct advertising expenses	$	173,425		$	216,156	$	222,610	$	221,600
	Net (loss) income applicable to common stock	$	(4,928	)	$	15,331	$	34,959	$	207,791
	Net (loss) income per common share basic	$	(0.05	)	$	0.16	$	0.37	$	2.18
	Net (loss) income per common share — diluted	$	(0.05	)	$	0.16	$	0.37	$	2.18
		Year 2013 Quarters
		March 31			June 30		September 30		December 31
	Net revenues	$	276,605		$	327,744	$	321,141	$	320,352
	Net revenues less direct advertising expenses	$	170,086		$	217,021	$	211,501	$	210,390
	Net (loss) income applicable to common stock	$	(10,354	)	$	23,031	$	17,003	$	10,094
	Net (loss) income per common share basic	$	(0.11	)	$	0.24	$	0.18	$	0.11
	Net (loss) income per common share — diluted	$	(0.11	)	$	0.24	$	0.18	$	0.11
LAMAR MEDIA CORP [Member]
Quarterly Financial Data (Unaudited)	(8) Quarterly Financial Data (Unaudited)
	The tables below represent the balances for the selected quarterly financial data of the Company for each reporting period in the years ended December 31, 2014 and 2013.
		Year 2014 Quarters
		March 31			June 30		September 30		December 31
	Net revenues	$	284,933		$	330,433	$	334,998	$	336,696
	Net revenues less direct advertising expenses	$	173,425		$	216,156	$	222,610	$	221,600
	Net (loss) income	$	(4,778	)	$	15,480	$	35,103	$	241,230
		Year 2013 Quarters
		March 31			June 30		September 30		December 31
	Net revenues	$	276,605		$	327,744	$	321,141	$	320,352
	Net revenues less direct advertising expenses	$	170,086		$	217,021	$	211,501	$	210,390
	Net (loss) income	$	(10,212	)	$	23,178	$	17,144	$	10,228

Schedule_II_Valuation_and_Qual

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2014
Schedule II - Valuation and Qualifying Accounts	SCHEDULE II
	LAMAR ADVERTISING COMPANY
	AND SUBSIDIARIES
	Valuation and Qualifying Accounts
	Years Ended December 31, 2014, 2013 and 2012
	(In thousands)
		Balance at		Charged to		Deductions		Balance at
		Beginning		Costs and				End of
		of Period		Expenses				Period
	Year ended December 31, 2014
	Deducted in balance sheet from trade accounts receivable:
	Allowance for doubtful accounts	$	7,615		5,947		5,605	$	7,957
	Deducted in balance sheet from intangible assets:
	Amortization of intangible assets	$	1,900,026		96,139		1,073	$	1,995,092
	Year ended December 31, 2013
	Deducted in balance sheet from trade accounts receivable:
	Allowance for doubtful accounts	$	7,615		6,034		6,034	$	7,615
	Deducted in balance sheet from intangible assets:
	Amortization of intangible assets	$	1,794,415		106,533		922	$	1,900,026
	Year ended December 31, 2012
	Deducted in balance sheet from trade accounts receivable:
	Allowance for doubtful accounts	$	7,500		5,484		5,369	$	7,615
	Deducted in balance sheet from intangible assets:
	Amortization of intangible assets	$	1,705,402		102,941		13,928	$	1,794,415
LAMAR MEDIA CORP [Member]
Schedule II - Valuation and Qualifying Accounts	SCHEDULE II
	LAMAR MEDIA CORP.
	AND SUBSIDIARIES
	Valuation and Qualifying Accounts
	Years Ended December 31, 2014, 2013 and 2012
	(In thousands)
		Balance at		Charged to		Deductions		Balance
		Beginning of		Costs and				at end
		Period		Expenses				of Period
	Year Ended December 31, 2014
	Deducted in balance sheet from trade accounts receivable:
	Allowance for doubtful accounts	$	7,615		5,947		5,605	$	7,957
	Deducted in balance sheet from intangible assets:
	Amortization of intangible assets	$	1,899,080		96,139		1,073	$	1,994,146
	Year Ended December 31, 2013
	Deducted in balance sheet from trade accounts receivable:
	Allowance for doubtful accounts	$	7,615		6,034		6,034	$	7,615
	Deducted in balance sheet from intangible assets:
	Amortization of intangible assets	$	1,793,476		106,533		929	$	1,899,080
	Year Ended December 31, 2012
	Deducted in balance sheet from trade accounts receivable:
	Allowance for doubtful accounts	$	7,500		5,484		5,369	$	7,615
	Deducted in balance sheet from intangible assets:
	Amortization of intangible assets	$	1,704,492		102,941		13,957	$	1,793,476

Schedule_III_Real_Estate_and_A

Schedule III - Real Estate and Accumulated Depreciation	12 Months Ended
	Dec. 31, 2014
Schedule III - Real Estate and Accumulated Depreciation	SCHEDULE III
	LAMAR ADVERTISING COMPANY
	AND SUBSIDIARIES
	Schedule of Real Estate and Accumulated Depreciation
	December 31, 2014
	(In thousands)
	Description (1)		Encumbrances			Initial Cost(2)			Gross Carrying		Accumulated			Construction	Acquisition	Useful Lives
									Amount (3)		Depreciation			Date	Date
	317,597 Displays			—			—		$	2,520,644	$	(1,903,434	)	Various	Various	5 to 20
																years
	-1	no single asset exceeded 5% of the total gross carrying amount at December 31, 2014
	-2	This information is omitted, as it would be impracticable to compile such information on a site-by-site basis
	-3	Includes sites under construction
	The following table summarizes activity for the Company’s real estate assets, which consists of advertising displays and the related accumulated depreciation.
			December 31,
			2014			2013
	Gross real estate assets:
	Balance at the beginning of the year		$	2,459,425		$	2,378,940
	Additions for construction, acquisition, improvements to structures			98,857			112,459
	Assets sold or written-off			(36,392	)		(31,328	)
	Foreign exchange			(1,246	)		(646	)
	Balance at the end of the year		$	2,520,644		$	2,459,425
	Accumulated depreciation:
	Balance at the beginning of the year		$	1,799,325		$	1,657,784
	Depreciation			135,679			161,172
	Assets sold or written-off			(30,994	)		(19,213	)
	Foreign exchange			(576	)		(418	)
	Balance at the end of the year		$	1,903,434		$	1,799,325
LAMAR MEDIA CORP [Member]
Schedule III - Real Estate and Accumulated Depreciation	SCHEDULE III
	LAMAR MEDIA CORP.
	AND SUBSIDIARIES
	Schedule of Real Estate and Accumulated Depreciation
	December 31, 2014
	(In thousands)
	Description (1)		Encumbrances			Initial Cost(2)			Gross Carrying		Accumulated			Construction	Acquisition	Useful Lives
									Amount (3)		Depreciation			Date	Date
	317,597 Displays			—			—		$	2,520,644	$	(1,903,434	)	Various	Various	5 to 20
																years
	-1	no single asset exceeded 5% of the total gross carrying amount at December 31, 2014
	-2	This information is omitted, as it would be impracticable to compile such information on a site-by-site basis
	-3	Includes sites under construction
	The following table summarizes activity for the Company’s real estate assets, which consists of advertising displays and the related accumulated depreciation.
			December 31,
			2014			2013
	Gross real estate assets:
	Balance at the beginning of the year		$	2,459,425		$	2,378,940
	Additions for construction, acquisition, improvements to structures			98,857			112,459
	Assets sold or written-off			(36,392	)		(31,328	)
	Foreign exchange			(1,246	)		(646	)
	Balance at the end of the year		$	2,520,644		$	2,459,425
	Accumulated depreciation:
	Balance at the beginning of the year		$	1,799,325		$	1,657,784
	Depreciation			135,679			161,172
	Assets sold or written-off			(30,994	)		(19,213	)
	Foreign exchange			(576	)		(418	)
	Balance at the end of the year		$	1,903,434		$	1,799,325

Significant_Accounting_Policie1

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2014
Nature of Business	(a) Nature of Business
	Lamar Advertising Company (the Company) is engaged in the outdoor advertising business, operating over 144,000 billboard advertising displays in 44 states, Canada and Puerto Rico. The Company’s operating strategy is to be the leading provider of outdoor advertising services in the markets it serves.
	In addition, the Company operates a logo sign business in 23 states throughout the United States and the province of Ontario, Canada and operates over 41,000 transit advertising displays in 16 states, Canada and Puerto Rico. Logo signs are erected pursuant to state-awarded service contracts on public rights-of-way near highway exits and deliver brand name information on available gas, food, lodging and camping services. Included in the Company’s logo sign business are tourism signing contracts. The Company provides transit advertising on bus shelters, benches and buses in the markets it serves.
	REIT Conversion
	As previously announced, since January 1, 2014, the Company has been organized and has operated in a manner that enables it to qualify, and intends to continue to operate in a manner that will allow it to continue to qualify, as a Real Estate Investment Trust, or REIT, for federal income tax purposes. As part of the Company’s REIT conversion, the Company completed a merger with its predecessor which was approved by the Company’s stockholders in November 2014. At the time of the merger, all outstanding shares of the Company’s Class A common stock held in treasury ceased to be outstanding and a corresponding adjustment was recorded to additional paid-in capital and common stock.
	As a REIT, the Company generally will not be subject to federal income taxes on its income and gains that the Company distributes to its stockholders, including the income derived from advertising rental revenue. However, even as a REIT, the Company will remain obligated to pay income taxes on earnings from the assets of its taxable REIT subsidiaries (“TRSs”). In addition, the Company’s foreign assets and operations continue to be subject to taxation in the foreign jurisdictions where those assets are held or those operations are conducted.
Principles of Consolidation	(b) Principles of Consolidation
	The accompanying consolidated financial statements include Lamar Advertising Company, its wholly owned subsidiary, Lamar Media Corp. (Lamar Media), and its majority-owned subsidiaries. All inter-company transactions and balances have been eliminated in consolidation.
	An operating segment is a component of an enterprise:
		•		that engages in business activities from which it may earn revenues and incur expenses;
		•		whose operating results are regularly reviewed by the enterprise’s chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance; and
		•		for which discrete financial information is available.
	We define the term ‘chief operating decision maker’ to be our executive management group, which consist of our Chief Executive Officer, President and Chief Financial Officer. Currently, all operations are reviewed on a consolidated basis for budget and business plan performance by our executive management group. Additionally, operational performance at the end of each reporting period is viewed in the aggregate by our management group. Any decisions related to changes in invested capital, personnel, operational improvement or training, or to allocate other company resources are made based on the combined results.
	We operate in a single operating and reporting segment, advertising. We rent advertising space on billboards, buses, shelters and benches and logo plates.
Property, Plant and Equipment	(c) Property, Plant and Equipment
	Property, plant and equipment are stated at cost. Depreciation is calculated using accelerated and straight-line methods over the estimated useful lives of the assets.
Goodwill and Intangible Assets	(d) Goodwill and Intangible Assets
	Goodwill is subject to an annual impairment test. The Company designated December 31 as the date of its annual goodwill impairment test. Impairment testing involves various estimates and assumptions, which could vary, and an analysis of relevant market data and market capitalization. If industry and economic conditions deteriorate, the Company may be required to assess goodwill impairment before the next annual test, which could result in impairment charges.
	The Company is required to identify its reporting units and determine the carrying value of each reporting unit. The Company has indentified two reporting units, Billboard operations and Logo operations, by assigning the assets and liabilities, including the existing goodwill and intangible assets, to those reporting units. The Company is required to determine the fair value of each reporting unit and compare it to the carrying amount of the reporting unit. To the extent the carrying amount of a reporting unit exceeds the fair value of the reporting unit, the Company would be required to perform the second step of the impairment test, as this is an indication that the reporting unit goodwill may be impaired. The fair value of each reporting unit exceeded its carrying amount at its annual impairment test date on December 31, 2014 and 2013; therefore, the Company was not required to recognize an impairment loss.
	Intangible assets, consisting primarily of site locations, customer lists and contracts, and non-competition agreements are amortized using the straight-line method over the assets estimated useful lives, generally from 3 to 15 years.
Impairment of Long-Lived Assets	(e) Impairment of Long-Lived Assets
	Long-lived assets, such as property, plant and equipment, and purchased intangibles subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset or asset group before interest expense. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized by the amount by which the carrying amount of the asset exceeds the fair value of the asset or asset group. Assets to be disposed of would be separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and are no longer depreciated. The assets and liabilities of a disposed group classified as held for sale would be presented separately in the appropriate asset and liability sections of the balance sheet.
Acquisitions	(f) Acquisitions
	For transactions that meet the definition of a business combination, the Company allocates the purchase price, including any contingent consideration, to the assets acquired and the liabilities assumed at their estimated fair values as of the date of the acquisition with any excess of the purchase price paid over the estimated fair value of net assets acquired recorded as goodwill. The fair value of the assets acquired and liabilities assumed is typically determined by using either estimates of replacement costs or discounted cash flow valuation methods. When determining the fair value of tangible assets acquired, the Company must estimate the cost to replace the asset with a new asset, adjusted for an estimated reduction in fair value due to age of the asset, and the economic useful life. When determining the fair value of intangible assets acquired, the Company must estimate the applicable discount rate and the timing and amount of future cash flows. The determination of the final purchase price and the acquisition-date fair value of identifiable assets acquired and liabilities assumed may extend over more than one period and result in adjustments to the preliminary estimate recognized in the prior period financial statements.
Deferred Income	(g) Deferred Income
	Deferred income consists principally of advertising revenue invoiced in advance and gains resulting from the sale of certain assets to related parties. Deferred advertising revenue is recognized in income over the term of the contract.
Revenue Recognition	(h) Revenue Recognition
	The Company recognizes outdoor advertising revenue on an accrual basis ratably over the term of the contracts. Production revenue and the related expense for the advertising copy are recognized upon completion of the sale.
	The Company engages in barter transactions where the Company trades advertising space for goods and services. The Company recognizes revenues and expenses from barter transactions at fair value, which is determined based on the Company’s own historical practice of receiving cash for similar advertising space from buyers unrelated to the party in the barter transaction. The amount of revenue and expense recognized for advertising barter transactions is as follows:
			2014		2013		2012
	Net revenues		$	7,839	$	7,862	$	6,798
	Direct advertising expenses		$	2,928	$	3,005	$	2,900
	General and administrative expenses		$	4,675	$	4,417	$	3,699
Income Taxes	(i) Income Taxes
	As a REIT, the Company is generally not subject to federal income taxes on income and gains distributed to the Company’s stockholders. However, the Company remains obligated to pay income taxes on earnings from domestic TRSs. In addition, the Company’s foreign assets and operations continue to be subject to taxation in the foreign jurisdictions where those assets are held or where those operations are conducted, including those designated as Qualified REIT Subsidiaries, or QRSs, for federal income tax purposes. Accordingly, the consolidated financial statements reflect provisions for federal, state, local and foreign income taxes. The Company recognizes deferred tax assets and liabilities for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis, as well as operating loss and tax credit carryforwards. The Company measures deferred tax assets and liabilities using enacted tax rates expected to apply to taxable income in the years in which those temporary differences and carry forwards are expected to be recovered or settled. The effect on deferred tax assets and liabilities as a result of a change in tax rates is recognized in income in the period that includes the enactment date.
Dividends/Distributions	(j) Dividends/Distributions
	During the year ended December 31, 2014, the Company included in its quarterly cash distributions to its common stockholders approximately $39,915 or $0.42 per share, of earnings and profits accumulated during the years it was taxed as a C corporation, in anticipation of commencing to operate as a REIT effective January 1, 2014. As a REIT, the Company must annually distribute to its stockholders an amount equal to at least 90% of its REIT taxable income (determined before the deduction for distributed earnings and excluding any net capital gain). During the year ended December 31, 2014, the Company declared and paid distributions of its REIT taxable income of an aggregate of $198,520 or $2.08 per share. The amount, timing and frequency of future distributions will be at the sole discretion of the Board of Directors and will be declared based upon various factors, a number of which may be beyond the Company’s control, including the financial condition and operating cash flows, the amount required to maintain REIT status and reduce any income and excise taxes that the Company otherwise would be required to pay, limitations on distributions in our existing and future debt instruments, the Company’s ability to utilize net operating losses (“NOLs”) to offset, in whole or in part, the Company’s distribution requirements, limitations on its ability to fund distributions using cash generated through its TRSs and other factors that the Board of Directors may deem relevant. During the years ended December 31, 2014, 2013 and 2012, the Company paid cash dividend distributions to holders of its Series AA Preferred Stock of $365 or $63.80 per share.
Earnings Per Share	(k) Earnings Per Share
	The calculation of basic earnings per share excludes any dilutive effect of stock options and convertible debt, while diluted earnings per share includes the dilutive effect of stock options and convertible debt. For the years ended December 31, 2014, 2013 and 2012 there were no dilutive shares excluded from the calculation.
Share Based Compensation	(l) Stock Based Compensation
	Compensation expense for share-based awards is recognized based on the grant date fair value of those awards. Stock-based compensation expense includes an estimate for pre-vesting forfeitures and is recognized over the requisite service periods of the awards on a straight-line basis, which is generally commensurate with the vesting term. Non-cash compensation expense recognized during the years ended December 31, 2014, 2013, and 2012 were $24,120, $24,936 and $14,466, respectively. The $24,120 expensed during the year ended December 31, 2014 consists of (i) $9,652 related to stock options, (ii) $14,210 related to stock grants, made under the Company’s performance-based stock incentive program in 2014 and (iii) $258 related to stock awards to directors. See Note 14 for information on the assumptions used to calculate the fair value of stock-based compensation.
Cash and Cash Equivalents	(m) Cash and Cash Equivalents
	The Company considers all highly-liquid investments with original maturities of three months or less to be cash equivalents.
Foreign Currency Translation	(n) Foreign Currency Translation
	Local currencies generally are considered the functional currencies outside the United States. Assets and liabilities for operations in local-currency environments are translated at year-end exchange rates. Income and expense items are translated at average rates of exchange prevailing during the year. Foreign currency translation adjustments are recorded as a component of other comprehensive income in the Consolidated Statement of Operations and Comprehensive Income and as a component of accumulated other comprehensive income in the Consolidated Statement of Stockholders’ Equity.
Asset Retirement Obligations	(o) Asset Retirement Obligations
	The Company is required to record the fair value of obligations associated with the retirement of tangible long-lived assets in the period in which it is incurred. The liability is capitalized as part of the related long-lived asset’s carrying amount. Over time, accretion of the liability is recognized as an operating expense and the capitalized cost is depreciated over the expected useful life of the related asset. The Company’s asset retirement obligations relate primarily to the dismantlement, removal, site reclamation and similar activities of its properties.
Use of Estimates	(p) Use of Estimates
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Comprehensive Income	(q) Comprehensive Income
	Total comprehensive income is presented in the Consolidated Statements of Operations and Comprehensive Income and the components of accumulated other comprehensive income are presented in the Consolidated Statements of Stockholders’ Equity. Comprehensive Income is composed of foreign currency translation effects.
Fair Value Measurements	(r) Fair Value Measurements
	The Company determines the fair value of its financial instruments using the fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.
Subsequent Events	(s) Subsequent Events
	The Company has performed an evaluation of subsequent events through the date on which the financial statements are issued.  There were no subsequent events indentified through the date on which these financial statements are issued.
LAMAR MEDIA CORP [Member]
Nature of Business	(a) Nature of Business
	Lamar Media Corp. is a wholly owned subsidiary of Lamar Advertising Company. Lamar Media Corp. is engaged in the outdoor advertising business operating approximately 145,000 outdoor advertising displays in 44 states. Lamar Media’s operating strategy is to be the leading provider of outdoor advertising services in the markets it serves.
	In addition, Lamar Media operates a logo sign business in 23 states throughout the United States as well as the province of Ontario, Canada. Logo signs are erected pursuant to state-awarded service contracts on public rights-of-way near highway exits and deliver brand name information on available gas, food, lodging and camping services. Included in the Company’s logo sign business are tourism signing contracts. The Company provides transit advertising on bus shelters, benches and buses in the markets it serves.
	Certain footnotes are not provided for the accompanying financial statements as the information in notes 2, 4, 6, 9, 10, 13, 14, 15, 16, 17 and 18 and portions of notes 1 and 12 to the consolidated financial statements of Lamar Advertising Company included elsewhere in this filing are substantially equivalent to that required for the consolidated financial statements of Lamar Media Corp. Earnings per share data is not provided for the operating results of Lamar Media Corp. as it is a wholly owned subsidiary of Lamar Advertising Company.
Principles of Consolidation	(b) Principles of Consolidation
	The accompanying consolidated financial statements include Lamar Media Corp., its wholly owned subsidiaries, The Lamar Company, LLC, Lamar Central Outdoor, Inc., Lamar Oklahoma Holding Co., Inc., Lamar Advertising Southwest, Inc., Lamar DOA Tennessee Holdings, Inc., and Interstate Logos, LLC. and their majority-owned subsidiaries. All inter-company transactions and balances have been eliminated in consolidation.

Significant_Accounting_Policie2

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Revenue and Expense Recognized for Advertising Barter Transactions	The amount of revenue and expense recognized for advertising barter transactions is as follows:
		2014		2013		2012
	Net revenues	$	7,839	$	7,862	$	6,798
	Direct advertising expenses	$	2,928	$	3,005	$	2,900
	General and administrative expenses	$	4,675	$	4,417	$	3,699

Acquisitions_Tables

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2014
Business Combinations [Abstract]
Summary of Allocation of Acquisition Costs	The following is a summary of the allocation of the acquisition costs in the above transactions.
		Total
	Property, plant and equipment	$	10,542
	Goodwill		9,457
	Site locations		36,982
	Non-competition agreements		135
	Customer lists and contracts		7,216
	Current assets		895
	Current liabilities		(206	)
		$	65,021
	The following is a summary of the allocation of the acquisition costs in the above transactions.
		Total
	Property, plant and equipment	$	18,196
	Goodwill		18,631
	Site locations		50,333
	Non-competition agreements		430
	Customer lists and contracts		10,390
	Other assets		1,408
	Current liabilities		(2,158	)
		$	97,230
Summary of Unaudited Pro Forma Financial Information	The following unaudited pro forma financial information for the Company gives effect to the 2014 and 2013 acquisitions as if they had occurred on January 1, 2013. These pro forma results do not purport to be indicative of the results of operations which actually would have resulted had the acquisitions occurred on such date or to project the Company’s results of operations for any future period.
		2014			2013
		(unaudited)
	Net revenues	$	1,291,771		$	1,262,506
	Net income applicable to common stock	$	256,785		$	40,015
	Net income per common share — basic	$	2.7		$	0.42
	Net income per common share — diluted	$	2.69		$	0.42
	The following unaudited pro forma financial information for the Company gives effect to the 2013 and 2012 acquisitions as if they had occurred on January 1, 2012. These pro forma results do not purport to be indicative of the results of operations which actually would have resulted had the acquisitions occurred on such date or to project the Company’s results of operations for any future period.
		2013			2012
		(unaudited)
	Net revenues	$	1,255,376		$	1,225,958
	Net income applicable to common stock	$	40,725		$	12,098
	Net income per common share — basic	$	0.43		$	0.13
	Net income per common share — diluted	$	0.43		$	0.13

Property_Plant_and_Equipment_T

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Summary of Major Categories of Property, Plant and Equipment	Major categories of property, plant and equipment at December 31, 2014 and 2013 are as follows:
		Estimated Life	2014		2013
		(Years)
	Land	—	$	316,798	$	312,883
	Building and improvements	10 — 39		132,360		125,724
	Advertising structures	5 — 15		2,520,644		2,459,425
	Automotive and other equipment	3 — 7		140,583		138,424
			$	3,110,385	$	3,036,456

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2014
Summary of Intangible Assets	The following is a summary of intangible assets at December 31, 2014 and December 31, 2013:
		Estimated		2014				2013
		Life
		(Years)		Gross Carrying		Accumulated		Gross Carrying		Accumulated
				Amount		Amortization		Amount		Amortization
	Amortizable Intangible Assets:
	Customer lists and contracts	7 — 10		$	499,310	$	470,170	$	492,299	$	463,188
	Non-competition agreements	3 — 15			64,062		63,192		63,933		62,914
	Site locations	15			1,531,161		1,194,709		1,495,635		1,106,947
	Other	5 — 15			14,008		13,485		14,008		13,441
				$	2,108,541	$	1,741,556	$	2,065,875	$	1,646,490
	Unamortizable Intangible Assets:
	Goodwill			$	1,766,304	$	253,536	$	1,757,089	$	253,536
Summary of Changes in Gross Carrying Amount of Goodwill	The changes in the gross carrying amount of goodwill for the year ended December 31, 2014 are as follows:
	Balance as of December 31, 2013	$	1,757,089
	Goodwill acquired during the year		9,457
	Purchase price adjustments and other		(242	)
	Impairment losses		—
	Balance as of December 31, 2014	$	1,766,304
Summary of Estimated Amortization Expense	The following is a summary of the estimated amortization expense for future years:
	2015	$	62,020
	2016		51,809
	2017		46,562
	2018		41,849
	2019		36,547
	Thereafter		128,198
	Total	$	366,985
LAMAR MEDIA CORP [Member]
Summary of Intangible Assets	The following is a summary of intangible assets at December 31, 2014 and December 31, 2013:
		Estimated		2014				2013
		Life		Gross Carrying		Accumulated		Gross Carrying		Accumulated
		(Years)		Amount		Amortization		Amount		Amortization
	Amortizable Intangible Assets:
	Customer lists and contracts	7—10		$	499,311	$	470,170	$	492,299	$	463,188
	Non-competition agreement	3—15			64,062		63,192		63,933		62,914
	Site locations	15			1,531,161		1,194,709		1,495,635		1,106,945
	Other	5—15			13,463		13,408		13,463		13,364
				$	2,107,997	$	1,741,479	$	2,065,330	$	1,646,411
	Unamortizable Intangible Assets:
	Goodwill			$	1,755,283	$	252,667	$	1,746,068	$	252,667
Summary of Changes in Gross Carrying Amount of Goodwill	The changes in the gross carrying amount of goodwill for the year ended December 31, 2014 are as follows:
	Balance as of December 31, 2013	$	1,746,068
	Goodwill acquired during the year		9,457
	Purchase price adjustments and other		(242	)
	Impairment losses		—
	Balance as of December 31, 2014	$	1,755,283

Leases_Tables

Leases (Tables)	12 Months Ended
	Dec. 31, 2014
Leases [Abstract]
Summary of Minimum Annual Rental Payments	The following is a summary of minimum annual rental payments required under those operating leases that have original or remaining lease terms in excess of one year as of December 31, 2014:
	2015	$	162,840
	2016	$	128,145
	2017	$	112,157
	2018	$	97,166
	2019	$	85,174
	Thereafter	$	622,597

Accrued_Expenses_Tables

Accrued Expenses (Tables)	12 Months Ended
	Dec. 31, 2014
Summary of Accrued Expenses	The following is a summary of accrued expenses at December 31, 2014 and 2013:
		2014		2013
	Payroll	$	13,852	$	11,311
	Interest		29,281		23,451
	Insurance benefits		12,853		13,090
	Accrued lease expense		35,903		37,346
	Other		16,901		13,726
		$	108,790	$	98,924
LAMAR MEDIA CORP [Member]
Summary of Accrued Expenses	The following is a summary of accrued expenses at December 31, 2014 and 2013:
		2014		2013
	Payroll	$	13,852	$	11,311
	Interest		29,281		23,451
	Accrued lease expense		35,903		37,346
	Other		25,971		23,524
		$	105,007	$	95,632

Longterm_Debt_Tables

Long-term Debt (Tables)	12 Months Ended
	Dec. 31, 2014
Long-Term Debt	Long-term debt consists of the following at December 31, 2014 and 2013:
		2014			2013
	Senior Credit Facility	$	353,750		$	502,106
	7 7/8% Senior Subordinated Notes		—			400,000
	5 7/8% Senior Subordinated Notes		500,000			500,000
	5% Senior Subordinated Notes		535,000			535,000
	5 3/8% Senior Notes		510,000			—
	Other notes with various rates and terms		1,145			1,696
			1,899,895			1,938,802
	Less current maturities		(15,625	)		(55,935	)
	Long-term debt excluding current maturities	$	1,884,270		$	1,882,867
Summary of Long-Term Debt Matures	Long-term debt matures as follows:
	2015	$	15,625
	2016	$	21,118
	2017	$	39,375
	2018	$	45,000
	2019	$	233,750
	Later years	$	1,545,027
Schedule of Maturities of Long Term Debt	The Term A Loans began amortizing on June 30, 2014 in quarterly installments on each September 30, December 31, March 31, and June 30 thereafter, as follows:
	Principal Payment Date	Principal Amount
	March 31, 2015-March 31, 2016	$	3,750
	June 30, 2016- March 31, 2017	$	5,625
	June 30, 2017-December 31, 2018	$	11,250
	Term A Loan Maturity Date	$	168,750
LAMAR MEDIA CORP [Member]
Long-Term Debt	Long-term debt consists of the following at December 31, 2014 and 2013:
		2014			2013
	Senior Credit Agreement	$	353,750		$	502,106
	7 7/8% Senior Subordinated Notes		—			400,000
	5 7/8% Senior Subordinated Notes		500,000			500,000
	5% Senior Subordinated Notes		535,000			535,000
	5 3/8% Senior Notes		510,000			—
	Other notes with various rates and terms		1,145			1,696
			1,899,895			1,938,802
	Less current maturities		(15,625	)		(55,935	)
	Long-term debt excluding current maturities	$	1,884,270		$	1,882,867
Summary of Long-Term Debt Matures	Long-term debt matures as follows:
	2015	$	15,625
	2016	$	21,118
	2017	$	39,375
	2018	$	45,000
	2019	$	233,750
	Later years	$	1,545,027

Asset_Retirement_Obligation_Ta

Asset Retirement Obligation (Tables)	12 Months Ended
	Dec. 31, 2014
Asset Retirement Obligation Disclosure [Abstract]
Information Related to Asset Retirement Obligations	The following table reflects information related to our asset retirement obligations:
	Balance at December 31, 2012	$	189,659
	Additions to asset retirement obligations		3,741
	Accretion expense		11,046
	Liabilities settled		(3,615	)
	Balance at December 31, 2013		200,831
	Additions to asset retirement obligations		1,238
	Accretion expense		5,262
	Liabilities settled		(3,004	)
	Balance at December 31, 2014	$	204,327

Depreciation_and_Amortization_

Depreciation and Amortization (Tables)	12 Months Ended
	Dec. 31, 2014
Text Block [Abstract]
Depreciation and Amortization Expense Excluded from Operating Expenses in its Statements of Operations	The amounts of depreciation and amortization expense excluded from the following operating expenses in its Statements of Operations are:
		Year Ended December 31,
		2014		2013		2012
	Direct expenses	$	241,471	$	283,280	$	277,662
	General and administrative expenses		4,534		4,684		4,137
	Corporate expenses		12,430		12,615		14,284
		$	258,435	$	300,579	$	296,083

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2014
Income Tax Expense (Benefit)	Income tax expense (benefit) consists of the following:
			Current			Deferred			Total
	Year ended December 31, 2014:
	U.S. federal		$	8,721		$	(119,014	)	$	(110,293	)
	State and local			2,632			(2,909	)		(277	)
	Foreign			692			(214	)		478
			$	12,045		$	(122,137	)	$	(110,092	)
	Year ended December 31, 2013:
	U.S. federal		$	930		$	21,681		$	22,611
	State and local			1,609			1,165			2,774
	Foreign			1,553			(4,097	)		(2,544	)
			$	4,092		$	18,749		$	22,841
	Year ended December 31, 2012:
	U.S. federal		$	—		$	6,743		$	6,743
	State and local			823			826			1,649
	Foreign			1,103			(1,253	)		(150	)
			$	1,926		$	6,316		$	8,242
U.S. and Foreign Components of Earnings Before Income Taxes	The U.S. and foreign components of earnings before income taxes are as follows:
			2014			2013			2012
	U.S.		$	144,298		$	62,506		$	17,279
	Foreign			(872	)		474			(1,147	)
	Total		$	143,426		$	62,980		$	16,132
Schedule of Effective Income Tax Rate Reconciliation	A reconciliation of significant differences between the reported amount of income tax expense and the expected amount of income tax expense that would result from applying the U.S. federal statutory income tax rate of 35 percent to income before taxes is as follows:
			2014			2013			2012
	Income tax expense at U.S. federal statutory rate		$	50,199		$	22,043		$	5,646
	Tax adjustment related to REIT (a)			(44,891	)		—			—
	State and local income taxes, net of federal income tax benefit			1,017			3,585			1,541
	Book expenses not deductible for tax purposes			2,061			1,351			1,058
	Stock-based compensation			(33	)		65			270
	Valuation allowance			—			(1,097	)		(331	)
	Rate change (b)			91			(2,565	)		49
	Deferred tax adjustment due to REIT conversion			(120,081	)		—			—
	Other differences, net			1,545			(541	)		9
	Income tax expense		$	(110,092	)	$	22,841		$	8,242
	(a)	Includes dividend paid deduction of $62,937.
	(b)	In 2013, the “Tax Burden Adjustment and Redistribution Act” was signed into law. Under the enacted legislation, the Puerto Rico corporate income tax rate was increased to 39% from 30%. As a result, a non-cash benefit of $2,479 to income tax expense was recorded for the increase of the Puerto Rico net deferred tax asset. Also in 2013, British Columbia Bill 2 was signed into law. The enacted legislation increased the general corporate income tax rate to 11% from 10%. As a result, a non-cash benefit of $86 to income tax expense was recorded for the increase of the Canadian net deferred tax asset.
Components of Deferred Taxes	The tax effect of temporary differences that give rise to significant portions of the deferred tax assets and (liabilities) are presented below:
			2014			2013
	Deferred tax assets:
	Allowance for doubtful accounts		$	255		$	2,972
	Accrued liabilities not deducted for tax purposes			4,703			37,764
	Asset retirement obligation			79			70,166
	Net operating loss carry forwards			11,881			138,865
	Tax credit carry forwards			209			4,844
	Charitable contributions carry forward			9			9
	Property, plant and equipment			65			—
	Investment in partnerships			354			—
	Gross deferred tax assets			17,555			254,620
	Less: valuation allowance			(9	)		(2,331	)
	Net deferred tax assets			17,546			252,289
	Deferred tax liabilities:
	Property, plant and equipment			—			(45,160	)
	Intangibles			(4,321	)		(314,382	)
	Investment in partnerships			—			(1,519	)
	Gross deferred tax liabilities			(4,321	)		(361,061	)
	Net deferred tax assets (liabilities)		$	13,225		$	(108,772	)
	Classification in the consolidated balance sheets:
	Current deferred tax assets		$	729		$	10,378
	Current deferred tax liabilities			—			—
	Noncurrent deferred tax assets			12,496			—
	Noncurrent deferred tax liabilities			—			(119,150	)
	Net deferred tax assets (liabilities)		$	13,225		$	(108,772	)
Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:
	Balance as of December 31, 2012		$	75
	Additions for tax positions related to current year			1
	Additions for tax positions related to prior years			—
	Reductions for tax positions related to prior years			—
	Lapse of statute of limitations			(41	)
	Settlements			—
	Balance as of December 31, 2013		$	35
	Additions for tax positions related to current year			—
	Additions for tax positions related to prior years			—
	Reductions for tax positions related to prior years			—
	Lapse of statute of limitations			(35	)
	Settlements			—
	Balance as of December 31, 2014		$	—
LAMAR MEDIA CORP [Member]
Income Tax Expense (Benefit)	Income tax expense (benefit) consists of the following:
			Current			Deferred			Total
	Year ended December 31, 2014:
	U.S. federal			8,993			(151,191	)		(142,198	)
	State and local			2,579			(4,124	)		(1,545	)
	Foreign			692			(213	)		479
			$	12,264		$	(155,528	)	$	(143,264	)
	Year ended December 31, 2013:
	U.S. federal		$	930		$	21,798		$	22,728
	State and local			1,609			1,184			2,793
	Foreign			1,553			(4,097	)		(2,544	)
			$	4,092		$	18,885		$	22,977
	Year ended December 31, 2012:
	U.S. federal		$	—		$	6,859		$	6,859
	State and local			824			820			1,644
	Foreign			1,103			(1,253	)		(150	)
			$	1,927		$	6,426		$	8,353
U.S. and Foreign Components of Earnings Before Income Taxes	The U.S. and foreign components of earnings before income taxes are as follows:
			2014			2013			2012
	U.S.		$	144,643		$	62,841		$	17,615
	Foreign			(872	)		474			(1,147	)
	Total		$	143,771		$	63,315		$	16,468
Schedule of Effective Income Tax Rate Reconciliation	A reconciliation of significant differences between the reported amount of income tax expense and the expected amount of income tax expense that would result from applying the U.S. federal statutory income tax rate of 35 percent to income before taxes is as follows:
			2014			2013			2012
	Income tax expense at U.S. federal statutory rate		$	50,320		$	22,160		$	5,764
	Tax adjustment related to REIT (a)			(45,012	)		—			—
	State and local income taxes, net of federal income tax benefit			1,017			3,601			1,557
	Book expenses not deductible for tax purposes			2,061			1,351			1,058
	Stock-based compensation			(33	)		65			270
	Valuation allowance			—			(1,094	)		(354	)
	Rate Change (b)			91			(2,565	)		49
	Deferred tax adjustment due to REIT conversion			(153,472	)		—			—
	Other differences, net			1,764			(541	)		9
	Income tax expense		$	(143,264	)	$	22,977		$	8,353
	(a)	Includes dividend paid deduction of $63,058.
	(b)	In 2013, the “Tax Burden Adjustment and Redistribution Act” was signed into law. Under the enacted legislation, the Puerto Rico corporate income tax rate was increased to 39% from 30%. As a result, a non-cash benefit of $2,479 to income tax expense was recorded for the increase of the Puerto Rico net deferred tax asset. Also in 2013, British Columbia Bill 2 was signed into law. The enacted legislation increased the general corporate income tax rate to 11% from 10%. As a result, a non-cash benefit of $86 to income tax expense was recorded for the increase of the Canadian net deferred tax asset.
Components of Deferred Taxes	The tax effect of temporary differences that give rise to significant portions of the deferred tax assets and (liabilities) are presented below:
			2014			2013
	Deferred tax assets:
	Allowance for doubtful accounts		$	255		$	2,972
	Accrued liabilities not deducted for tax purposes			4,703			37,764
	Asset retirement obligation			79			70,166
	Net operating loss carry forwards			11,881			89,496
	Tax credit carry forwards			209			19,615
	Charitable contributions carry forward			9			9
	Property, plant and equipment			65			—
	Investment in partnership			354			—
	Gross deferred tax assets			17,555			220,022
	Less: valuation allowance			(9	)		(1,760	)
	Net deferred tax assets			17,546			218,262
	Deferred tax liabilities:
	Property, plant and equipment			—			(45,160	)
	Intangibles			(4,321	)		(313,746	)
	Investment in partnerships			—			(1,519	)
	Gross deferred tax liabilities			(4,321	)		(360,425	)
	Net deferred tax assets (liabilities)		$	13,225		$	(142,163	)
	Classification in the consolidated balance sheets:
	Current deferred tax assets		$	729		$	10,378
	Current deferred tax liabilities			—			—
	Noncurrent deferred tax assets			12,496			—
	Noncurrent deferred tax liabilities			—			(152,541	)
	Net deferred tax liabilities		$	13,225		$	(142,163	)
Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows:
	Balance as of December 31, 2012		$	75
	Additions for tax positions related to current year			1
	Additions for tax positions related to prior years			—
	Reductions for tax positions related to prior years			—
	Lapse of statute of limitations			(41	)
	Settlements			—
	Balance as of December 31, 2013		$	35
	Additions for tax positions related to current year			—
	Additions for tax positions related to prior years			—
	Reductions for tax positions related to prior years			—
	Lapse of statute of limitations			(35	)
	Settlements			—
	Balance as of December 31, 2014		$	—

Stock_Compensation_Plans_Table

Stock Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Weighted Average Fair Value of Options Granted	The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions used:
	Grant Year	Dividend			Expected			Risk Free			Expected
		Yield			Volatility			Interest Rate			Lives
	2014		2	%		48	%		1	%		6
	2013		0	%		51	%		1	%		6
	2012		0	%		52	%		2	%		5
Stock Option Transactions under Various Stock-Based Employee Compensation Plans	Information regarding the 1996 Plan for the year ended December 31, 2014 is as follows:
		Shares			Weighted			Weighted
					Average			Average
					Exercise			Contractual
					Price			Life
	Outstanding, beginning of year		3,232,423		$	32.89
	Granted		87,000			51.04
	Exercised		(522,032	)		31.12
	Forfeited		(12,200	)		43.89
	Expired		(10,600	)		28.13
	Outstanding, end of year		2,774,591		$	33.76			6.66
	Exercisable at end of year		1,622,891		$	27.54			5.63
Summary of ESPP Share Activity	The following is a summary of 2009 ESPP share activity for the year ended December 31, 2014:
		Shares
	Available for future purchases, January 1, 2014		327,689
	Additional shares reserved under 2009 ESPP		80,209
	Purchases		(100,450	)
	Available for future purchases, December 31, 2014		307,448

Quarterly_Financial_Data_Unaud1

Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2014
Summary of Quarterly Financial Data	The tables below represent the balances for the selected quarterly financial data of the Company for each reporting period in the years ended December 31, 2014 and 2013.
		Year 2014 Quarters
		March 31			June 30		September 30		December 31
	Net revenues	$	284,933		$	330,433	$	334,998	$	336,696
	Net revenues less direct advertising expenses	$	173,425		$	216,156	$	222,610	$	221,600
	Net (loss) income applicable to common stock	$	(4,928	)	$	15,331	$	34,959	$	207,791
	Net (loss) income per common share basic	$	(0.05	)	$	0.16	$	0.37	$	2.18
	Net (loss) income per common share — diluted	$	(0.05	)	$	0.16	$	0.37	$	2.18
		Year 2013 Quarters
		March 31			June 30		September 30		December 31
	Net revenues	$	276,605		$	327,744	$	321,141	$	320,352
	Net revenues less direct advertising expenses	$	170,086		$	217,021	$	211,501	$	210,390
	Net (loss) income applicable to common stock	$	(10,354	)	$	23,031	$	17,003	$	10,094
	Net (loss) income per common share basic	$	(0.11	)	$	0.24	$	0.18	$	0.11
	Net (loss) income per common share — diluted	$	(0.11	)	$	0.24	$	0.18	$	0.11
LAMAR MEDIA CORP [Member]
Summary of Quarterly Financial Data	The tables below represent the balances for the selected quarterly financial data of the Company for each reporting period in the years ended December 31, 2014 and 2013.
		Year 2014 Quarters
		March 31			June 30		September 30		December 31
	Net revenues	$	284,933		$	330,433	$	334,998	$	336,696
	Net revenues less direct advertising expenses	$	173,425		$	216,156	$	222,610	$	221,600
	Net (loss) income	$	(4,778	)	$	15,480	$	35,103	$	241,230
		Year 2013 Quarters
		March 31			June 30		September 30		December 31
	Net revenues	$	276,605		$	327,744	$	321,141	$	320,352
	Net revenues less direct advertising expenses	$	170,086		$	217,021	$	211,501	$	210,390
	Net (loss) income	$	(10,212	)	$	23,178	$	17,144	$	10,228

Significant_Accounting_Policie3

Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	Reporting_Unit
	Billboard
	Transit
	State
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of advertising displays	144,000
Number of states in which the company operates	44
Number of states in which the company operates logo sign business	23
Number of transit advertising displays	41,000
Number of states in which the company operates	16
Number of reporting units	2
REIT threshold percentage of taxable income to be distributed to stockholders	90.00%
Distributions paid, preferred stockholders	$365	$365	$365
Distributions paid, preferred stockholders, per share	$63.80	$63.80	$63.80
Dilutive shares	0	0	0
Non cash compensation expense	24,120	24,936	14,466
Investment maturity period	Three months or less
LAMAR MEDIA CORP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of advertising displays	144,000
Number of states in which the company operates	44
Number of states in which the company operates logo sign business	23
Non cash compensation expense	24,120	24,936	14,466
One-time Special Cash Distribution [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Distributions paid	39,915
Distributions paid, per share	$0.42
Taxable Income Distribution [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Distributions paid	198,520
Distributions paid, per share	$2.08
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non cash compensation expense	9,652
Performance-Based Stock Incentive Program [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non cash compensation expense	14,210
Stock Awards to Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non cash compensation expense	$258
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated useful lives of Intangible assets	3 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated useful lives of Intangible assets	15 years

Significant_Accounting_Policie4

Significant Accounting Policies - Revenue and Expense Recognized for Advertising Barter Transactions (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Abstract]
Net revenues	$7,839	$7,862	$6,798
Direct advertising expenses	2,928	3,005	2,900
General and administrative expenses	$4,675	$4,417	$3,699

Acquisitions_Additional_Inform

Acquisitions - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Total purchase price of outdoor advertising assets paid in cash	$65,021	$92,248
Total acquired intangible assets	53,790	79,784
Portion of acquired intangible assets assigned to goodwill	9,457	18,631
Amount deductible for tax purposes	9,457	18,582
Aggregate amortization expense related to acquisition	1,452	2,158
Total purchase price of outdoor advertising assets		97,230
Non cash consideration of outdoor advertising assets		4,982
Gain on exchange of outdoor advertising assets		67
Other [Member]
Business Acquisition [Line Items]
Total acquired intangible assets	44,333	61,153
Weighted average useful life	14 years	14 years
Customer Lists and Contracts [Member]
Business Acquisition [Line Items]
Total acquired intangible assets	7,216	10,390
Weighted average useful life	7 years	7 years
Site Locations [Member]
Business Acquisition [Line Items]
Total acquired intangible assets	$36,982	$50,333
Weighted average useful life	15 years	15 years

Acquisitions_Summary_of_Alloca

Acquisitions - Summary of Allocation of Acquisition Costs (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Property, plant and equipment	$10,542	$18,196
Other assets		1,408
Goodwill	9,457	18,631
Current assets	895
Current liabilities	-206	-2,158
Total	65,021	97,230
Site Locations [Member]
Business Acquisition [Line Items]
Finite lived intangible assets	36,982	50,333
Non-competition Agreements [Member]
Business Acquisition [Line Items]
Finite lived intangible assets	135	430
Customer Lists and Contracts [Member]
Business Acquisition [Line Items]
Finite lived intangible assets	$7,216	$10,390

Acquisitions_Summary_of_Unaudi

Acquisitions - Summary of Unaudited Pro Forma Financial Information (Detail) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Business Combinations [Abstract]
Net revenues	$1,291,771	$1,255,376	$1,225,958
Net income applicable to common stock	$256,785	$40,725	$12,098
Net income per common share - basic	$2.70	$0.43	$0.13
Net income per common share - diluted	$2.69	$0.43	$0.13

Noncash_Financing_and_Investin1

Non-cash Financing and Investing Activities - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Supplemental Disclosure Of Non Cash Investing And Financing Information [Line Items]
Non-cash acquisition of capital expenditures and outdoor advertising assets	$1,900,000	$4,982,000
Treasury stock retired shares	17,270,930
Treasury stock retired value	896,818,000
Non-cash financing activity		0
LAMAR MEDIA CORP [Member]
Supplemental Disclosure Of Non Cash Investing And Financing Information [Line Items]
Non-cash acquisition of capital expenditures and outdoor advertising assets	1,900,000	4,982,000
Non-cash financing activity	$0	$0

Property_Plant_and_Equipment_S

Property, Plant and Equipment - Summary of Major Categories of Property, Plant and Equipment (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property, plant and equipment	3,110,385	$3,036,456
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	316,798	312,883
Land [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, Estimated life
Land [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, Estimated life
Building and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	132,360	125,724
Building and Improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, Estimated life	10 years
Building and Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, Estimated life	39 years
Advertising Structures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	2,520,644	2,459,425
Advertising Structures [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, Estimated life	5 years
Advertising Structures [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, Estimated life	15 years
Automotive and Other Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	140,583	$138,424
Automotive and Other Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, Estimated life	3 years
Automotive and Other Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property plant and equipment, Estimated life	7 years

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible Assets - Summary of Intangible Assets (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,108,541	$2,065,875
Accumulated Amortization	1,741,556	1,646,490
Goodwill gross carrying amount	1,766,304	1,757,089
Goodwill accumulated amortization	253,536	253,536
LAMAR MEDIA CORP [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,107,997	2,065,330
Accumulated Amortization	1,741,479	1,646,411
Goodwill gross carrying amount	1,755,283	1,746,068
Goodwill accumulated amortization	252,667	252,667
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	3 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	15 years
Customer Lists and Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	499,310	492,299
Accumulated Amortization	470,170	463,188
Customer Lists and Contracts [Member] | LAMAR MEDIA CORP [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	499,311	492,299
Accumulated Amortization	470,170	463,188
Customer Lists and Contracts [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	7 years
Customer Lists and Contracts [Member] | Minimum [Member] | LAMAR MEDIA CORP [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	7 years
Customer Lists and Contracts [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	10 years
Customer Lists and Contracts [Member] | Maximum [Member] | LAMAR MEDIA CORP [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	10 years
Non-competition Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	64,062	63,933
Accumulated Amortization	63,192	62,914
Non-competition Agreements [Member] | LAMAR MEDIA CORP [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	64,062	63,933
Accumulated Amortization	63,192	62,914
Non-competition Agreements [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	3 years
Non-competition Agreements [Member] | Minimum [Member] | LAMAR MEDIA CORP [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	3 years
Non-competition Agreements [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	15 years
Non-competition Agreements [Member] | Maximum [Member] | LAMAR MEDIA CORP [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	15 years
Site Locations [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,531,161	1,495,635
Accumulated Amortization	1,194,709	1,106,947
Site Locations [Member] | LAMAR MEDIA CORP [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,531,161	1,495,635
Accumulated Amortization	1,194,709	1,106,945
Site Locations [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	15 years
Site Locations [Member] | Maximum [Member] | LAMAR MEDIA CORP [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	15 years
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	14,008	14,008
Accumulated Amortization	13,485	13,441
Other [Member] | LAMAR MEDIA CORP [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	13,463	13,463
Accumulated Amortization	13,408	$13,364
Other [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	5 years
Other [Member] | Minimum [Member] | LAMAR MEDIA CORP [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	5 years
Other [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	15 years
Other [Member] | Maximum [Member] | LAMAR MEDIA CORP [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Life (Years)	15 years

Goodwill_and_Other_Intangible_3

Goodwill and Other Intangible Assets - Summary of Changes in Gross Carrying Amount of Goodwill (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Goodwill [Line Items]
Goodwill, beginning balance	$1,757,089
Goodwill acquired during the year	9,457
Purchase price adjustments and other	-242
Impairment losses	0
Goodwill, ending balance	1,766,304
LAMAR MEDIA CORP [Member]
Goodwill [Line Items]
Goodwill, beginning balance	1,746,068
Goodwill acquired during the year	9,457
Purchase price adjustments and other	-242
Impairment losses	0
Goodwill, ending balance	$1,755,283

Goodwill_and_Other_Intangible_4

Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$96,139	$106,533	$102,941

Goodwill_and_Other_Intangible_5

Goodwill and Other Intangible Assets - Summary of Estimated Amortization Expense (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Goodwill and Intangible Assets Disclosure [Abstract]
2015	$62,020
2016	51,809
2017	46,562
2018	41,849
2019	36,547
Thereafter	128,198
Total	$366,985	$419,385

Leases_Summary_of_Minimum_Annu

Leases - Summary of Minimum Annual Rental Payments (Detail) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Leases [Abstract]
2015	$162,840
2016	128,145
2017	112,157
2018	97,166
2019	85,174
Thereafter	$622,597

Leases_Additional_Information_

Leases - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Leases [Abstract]
Rental expense related to company's operating lease	$227,879	$222,638	$209,110

Accrued_Expenses_Summary_of_Ac

Accrued Expenses - Summary of Accrued Expenses (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Accounts Payable And Accrued Liabilities Current [Line Items]
Payroll	$13,852	$11,311
Interest	29,281	23,451
Insurance benefits	12,853	13,090
Accrued lease expense	35,903	37,346
Other	16,901	13,726
Total	108,790	98,924
LAMAR MEDIA CORP [Member]
Accounts Payable And Accrued Liabilities Current [Line Items]
Payroll	13,852	11,311
Interest	29,281	23,451
Accrued lease expense	35,903	37,346
Other	25,971	23,524
Total	$105,007	$95,632

Longterm_Debt_LongTerm_Debt_De

Long-term Debt - Long-Term Debt (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]
Long Term Debt	$1,899,895	$1,938,802
Less current maturities	-15,625	-55,935
Long-term debt excluding current maturities	1,884,270	1,882,867
LAMAR MEDIA CORP [Member]
Debt Instrument [Line Items]
Long Term Debt	1,899,895	1,938,802
Less current maturities	-15,625	-55,935
Long-term debt excluding current maturities	1,884,270	1,882,867
Senior Credit Facility [Member]
Debt Instrument [Line Items]
Long Term Debt	353,750	502,106
Senior Credit Facility [Member] | LAMAR MEDIA CORP [Member]
Debt Instrument [Line Items]
Long Term Debt	353,750	502,106
7 7/8% Senior Subordinated Notes [Member]
Debt Instrument [Line Items]
Long Term Debt		400,000
7 7/8% Senior Subordinated Notes [Member] | LAMAR MEDIA CORP [Member]
Debt Instrument [Line Items]
Long Term Debt		400,000
5 7/8% Senior Subordinated Notes [Member]
Debt Instrument [Line Items]
Long Term Debt	500,000	500,000
5 7/8% Senior Subordinated Notes [Member] | LAMAR MEDIA CORP [Member]
Debt Instrument [Line Items]
Long Term Debt	500,000	500,000
5% Senior Subordinated Notes [Member]
Debt Instrument [Line Items]
Long Term Debt	535,000	535,000
5% Senior Subordinated Notes [Member] | LAMAR MEDIA CORP [Member]
Debt Instrument [Line Items]
Long Term Debt	535,000	535,000
5 3/8% Senior Notes [Member]
Debt Instrument [Line Items]
Long Term Debt	510,000
5 3/8% Senior Notes [Member] | LAMAR MEDIA CORP [Member]
Debt Instrument [Line Items]
Long Term Debt	510,000
Other Notes with Various Rates and Terms [Member]
Debt Instrument [Line Items]
Long Term Debt	1,145	1,696
Other Notes with Various Rates and Terms [Member] | LAMAR MEDIA CORP [Member]
Debt Instrument [Line Items]
Long Term Debt	$1,145	$1,696

Longterm_Debt_LongTerm_Debt_Pa

Long-term Debt - Long-Term Debt (Parenthetical) (Detail)	Apr. 18, 2014	Dec. 31, 2014	Apr. 22, 2010	Feb. 09, 2012	Oct. 30, 2012	Jan. 10, 2014
Debt Instrument [Line Items]
Interest rate on senior notes	7.88%
7 7/8% Senior Subordinated Notes [Member]
Debt Instrument [Line Items]
Interest rate on senior notes		7.88%	7.88%
7 7/8% Senior Subordinated Notes [Member] | LAMAR MEDIA CORP [Member]
Debt Instrument [Line Items]
Interest rate on senior notes		7.88%
5 7/8% Senior Subordinated Notes [Member]
Debt Instrument [Line Items]
Interest rate on senior notes		5.88%		5.88%
5 7/8% Senior Subordinated Notes [Member] | LAMAR MEDIA CORP [Member]
Debt Instrument [Line Items]
Interest rate on senior notes		5.88%
5% Senior Subordinated Notes [Member]
Debt Instrument [Line Items]
Interest rate on senior notes		5.00%			5.00%
5% Senior Subordinated Notes [Member] | LAMAR MEDIA CORP [Member]
Debt Instrument [Line Items]
Interest rate on senior notes		5.00%
5 3/8% Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate on senior notes		5.38%				5.38%
5 3/8% Senior Notes [Member] | LAMAR MEDIA CORP [Member]
Debt Instrument [Line Items]
Interest rate on senior notes		5.38%

Longterm_Debt_Summary_of_LongT

Long-term Debt - Summary of Long-Term Debt Matures (Detail) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Debt Instrument [Line Items]
2015	$15,625
2016	21,118
2017	39,375
2018	45,000
2019	233,750
Later years	1,545,027
LAMAR MEDIA CORP [Member]
Debt Instrument [Line Items]
2015	15,625
2016	21,118
2017	39,375
2018	45,000
2019	233,750
Later years	$1,545,027

Longterm_Debt_Additional_Infor

Long-term Debt - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended	0 Months Ended
	Apr. 18, 2014	Dec. 31, 2014	Apr. 21, 2014	Apr. 22, 2010	Feb. 09, 2012	Oct. 30, 2012	Jan. 10, 2014	Feb. 03, 2014
Debt Instrument [Line Items]
Interest rate on convertible notes	7.88%
Aggregate principal amount of debt issued		$1,899,895,000
Amended and restated date	18-Apr-14
Remaining borrowing capacity under revolving credit facility		328,154,000
Revolving credit facility maturity date		2-Feb-19
LIBO Rate [Member]
Debt Instrument [Line Items]
Term A Loan Adjusted Base Rate	2.25%
Ratio of indebtedness to net capital minimum	1
Ratio of indebtedness to net capital one	3
Base Rate [Member]
Debt Instrument [Line Items]
Term A Loan Adjusted Base Rate	1.00%
Ratio of indebtedness to net capital minimum	1
Ratio of indebtedness to net capital one	3
Debt Ratio Less Than or Equal to Four Point Two Five [Member] | LIBO Rate [Member]
Debt Instrument [Line Items]
Term A Loan Adjusted Base Rate	2.00%
Ratio of indebtedness to net capital minimum	1
Ratio of indebtedness to net capital one	4.25
Debt Ratio Less Than or Equal to Three [Member]
Debt Instrument [Line Items]
Term A Loan Adjusted Base Rate	1.75%
Debt Ratio Less Than or Equal to Three [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Term A Loan Adjusted Base Rate	0.75%
Letter of Credit [Member]
Debt Instrument [Line Items]
Outstanding revolving credit facility		65,000,000
Letter of credit outstanding		6,846,000
Term A Loan Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing limit of incremental loan facility	300,000,000
7 7/8% Senior Subordinated Notes [Member]
Debt Instrument [Line Items]
Interest rate on convertible notes		7.88%		7.88%
Aggregate principal amount of debt issued	400,000,000			400,000,000
Net proceeds from the issuance of debt				392,000,000
Aggregate principal amount redeemed			400,000,000
Loss on transaction			20,847,000
Interest rate on convertible notes			7.88%
Number of notes outstanding		0
Non cash loss			5,095,000
5 7/8% Senior Subordinated Notes [Member]
Debt Instrument [Line Items]
Interest rate on convertible notes		5.88%			5.88%
Aggregate principal amount of debt issued					500,000,000
Net proceeds from the issuance of debt					489,000,000
Redemption percentage of aggregate principal amount of senior notes					35.00%
Additional redeemed percentage of aggregate principal amount					105.88%
Redemption percentage of issued notes which remain outstanding					65.00%
Redemption percentage equal to principal amount include aggregate premium					100.00%
Redemption price percentage of the principal amount to be purchased					101.00%
5% Senior Subordinated Notes [Member]
Debt Instrument [Line Items]
Interest rate on convertible notes		5.00%				5.00%
Aggregate principal amount of debt issued						535,000,000
Net proceeds from the issuance of debt						527,100,000
Redemption percentage of aggregate principal amount of senior notes						35.00%
Additional redeemed percentage of aggregate principal amount						105.00%
Redemption percentage of issued notes which remain outstanding						65.00%
Redemption percentage equal to principal amount include aggregate premium						100.00%
Redemption price percentage of the principal amount to be purchased						101.00%
5 3/8% Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate on convertible notes		5.38%					5.38%
Aggregate principal amount of debt issued							510,000,000
Net proceeds from the issuance of debt							502,300,000
Redemption percentage of aggregate principal amount of senior notes						35.00%
Additional redeemed percentage of aggregate principal amount						105.38%
Redemption percentage of issued notes which remain outstanding						65.00%
Redemption percentage equal to principal amount include aggregate premium						100.00%
Redemption price percentage of the principal amount to be purchased						101.00%
Senior Credit Facility [Member]
Debt Instrument [Line Items]
Non cash loss							5,176,000
Senior Credit Facility [Member] | Letter of Credit [Member]
Debt Instrument [Line Items]
Maximum borrowing limit of incremental loan facility								400,000
Incremental Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing limit of incremental loan facility	500,000,000							$500,000,000

Longterm_Debt_Schedule_of_Matu

Long-term Debt - Schedule of Maturities of Long Term Debt (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
March 31, 2015-March 31, 2016 [Member]
Debt Instrument [Line Items]
Principal payment amount	$3,750
June 30, 2016- March 31, 2017 [Member]
Debt Instrument [Line Items]
Principal payment amount	5,625
June 30, 2017-December 31, 2018 [Member]
Debt Instrument [Line Items]
Principal payment amount	11,250
Term A Loan Maturity Date [Member]
Debt Instrument [Line Items]
Principal payment amount	$168,750

Longterm_Debt_Schedule_of_Matu1

Long-term Debt - Schedule of Maturities of Long Term Debt (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2014
March 31, 2015-March 31, 2016 [Member]
Debt Instrument [Line Items]
Principal payment date	2015-03-31 - 2016-03-31
June 30, 2016- March 31, 2017 [Member]
Debt Instrument [Line Items]
Principal payment date	2016-06-30 - 2017-03-31
June 30, 2017-December 31, 2018 [Member]
Debt Instrument [Line Items]
Principal payment date	2017-06-30 - 2018-12-31

Asset_Retirement_Obligations_I

Asset Retirement Obligations - Information Related to Asset Retirement Obligations (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Asset Retirement Obligation Disclosure [Abstract]
Beginning Balance	$200,831	$189,659
Additions to asset retirement obligations	1,238	3,741
Accretion expense	5,262	11,046
Liabilities settled	-3,004	-3,615
Ending Balance	$204,327	$200,831

Depreciation_and_Amortization_1

Depreciation and Amortization - Depreciation and Amortization Expense Excluded from Operating Expenses in its Statements of Operations (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Component Of Other Income And Expense [Line Items]
Depreciation and amortization	$258,435	$300,579	$296,083
Direct Expenses [Member]
Component Of Other Income And Expense [Line Items]
Depreciation and amortization	241,471	283,280	277,662
General and Administrative Expenses [Member]
Component Of Other Income And Expense [Line Items]
Depreciation and amortization	4,534	4,684	4,137
Corporate Expenses [Member]
Component Of Other Income And Expense [Line Items]
Depreciation and amortization	$12,430	$12,615	$14,284

Income_Taxes_Income_Tax_Expens

Income Taxes - Income Tax Expense (Benefit) (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax [Line Items]
U.S. federal, Current	$8,721	$930
State and local, Current	2,632	1,609	823
Foreign, Current	692	1,553	1,103
Total Current	12,045	4,092	1,926
U.S. federal, Deferred	-119,014	21,681	6,743
State and local, Deferred	-2,909	1,165	826
Foreign, Deferred	-214	-4,097	-1,253
Total, Deferred	-122,137	18,749	6,316
U.S. federal, Total	-110,293	22,611	6,743
State and local, Total	-277	2,774	1,649
Foreign, Total	478	-2,544	-150
Income tax expense	-110,092	22,841	8,242
LAMAR MEDIA CORP [Member]
Income Tax [Line Items]
U.S. federal, Current	8,993	930
State and local, Current	2,579	1,609	824
Foreign, Current	692	1,553	1,103
Total Current	12,264	4,092	1,927
U.S. federal, Deferred	-151,191	21,798	6,859
State and local, Deferred	-4,124	1,184	820
Foreign, Deferred	-213	-4,097	-1,253
Total, Deferred	-155,528	18,885	6,426
U.S. federal, Total	-142,198	22,728	6,859
State and local, Total	-1,545	2,793	1,644
Foreign, Total	479	-2,544	-150
Income tax expense	($143,264)	$22,977	$8,353

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating Loss Carryforwards [Line Items]
Deferred income tax expense	($122,137)	$18,749	$6,316
Income taxes payable	308	848
Income tax rate	35.00%	35.00%	35.00%
Net operating loss subject to IRC 382	6,063
Amounts of credits available to offset income tax	4,822
Net change in total valuation allowance	2,322	1,087	332
Deferred tax assets valuation expected rate	0.00%
Net operating income	278,670	223,437	214,526
Potential deferred tax liability	8,326
Undistributed earnings of subsidiaries	23,789
Unrecognized tax benefits	0	35	75
LAMAR MEDIA CORP [Member]
Operating Loss Carryforwards [Line Items]
Deferred income tax expense	-155,528	18,885	6,426
Income taxes payable	308	630
Income tax rate	35.00%	35.00%	35.00%
Net operating loss subject to IRC 382	6,063
Amounts of credits available to offset income tax	19,593
Net change in total valuation allowance	1,751	1,085	356
Deferred tax assets valuation expected rate	0.00%
Net operating income	279,015	223,772	214,862
Potential deferred tax liability	8,326
Undistributed earnings of subsidiaries	23,789
Unrecognized tax benefits	0	35	75
REIT Conversion [Member]
Operating Loss Carryforwards [Line Items]
Deferred income tax expense	120,081
REIT Conversion [Member] | LAMAR MEDIA CORP [Member]
Operating Loss Carryforwards [Line Items]
Deferred income tax expense	153,472
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Amounts of credits available to offset income tax	241
State net operating loss carry forward	449,691
Valuation allowance for State and Local deferred tax assets	0	2,323
State and Local Jurisdiction [Member] | LAMAR MEDIA CORP [Member]
Operating Loss Carryforwards [Line Items]
Amounts of credits available to offset income tax	241
State net operating loss carry forward	411,970
Valuation allowance for State and Local deferred tax assets	0	1,751
U S [Member]
Operating Loss Carryforwards [Line Items]
US net operating loss carry forwards	257,839
U S [Member] | LAMAR MEDIA CORP [Member]
Operating Loss Carryforwards [Line Items]
US net operating loss carry forwards	122,078
Puerto Rico [Member]
Operating Loss Carryforwards [Line Items]
Amounts of credits available to offset income tax	209
Puerto Rico net operating loss carry forward	28,354
Net operating income	1,454
Puerto Rico [Member] | LAMAR MEDIA CORP [Member]
Operating Loss Carryforwards [Line Items]
Amounts of credits available to offset income tax	209
Puerto Rico net operating loss carry forward	28,354
Net operating income	$1,454

Income_Taxes_US_and_Foreign_Co

Income Taxes - U.S. and Foreign Components of Earnings Before Income Taxes (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Components Of Earnings From Continuing Operations Before Income Taxes And Provision For Income Taxes [Line Items]
U.S.	$144,298	$62,506	$17,279
Foreign	-872	474	-1,147
Income (loss) before income tax expense	143,426	62,980	16,132
LAMAR MEDIA CORP [Member]
Components Of Earnings From Continuing Operations Before Income Taxes And Provision For Income Taxes [Line Items]
U.S.	144,643	62,841	17,615
Foreign	-872	474	-1,147
Income (loss) before income tax expense	$143,771	$63,315	$16,468

Income_Taxes_Schedule_of_Effec

Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]
Income tax expense at U.S. federal statutory rate	$50,199	$22,043	$5,646
Tax adjustment related to REIT	-44,891
State and local income taxes, net of federal income tax benefit	1,017	3,585	1,541
Book expenses not deductible for tax purposes	2,061	1,351	1,058
Stock-based compensation	-33	65	270
Valuation allowance		-1,097	-331
Rate change	91	-2,565	49
Deferred tax adjustment due to REIT conversion	-120,081
Other differences, net	1,545	-541	9
Income tax expense	-110,092	22,841	8,242
LAMAR MEDIA CORP [Member]
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]
Income tax expense at U.S. federal statutory rate	50,320	22,160	5,764
Tax adjustment related to REIT	-45,012
State and local income taxes, net of federal income tax benefit	1,017	3,601	1,557
Book expenses not deductible for tax purposes	2,061	1,351	1,058
Stock-based compensation	-33	65	270
Valuation allowance		-1,094	-354
Rate change	91	-2,565	49
Deferred tax adjustment due to REIT conversion	-153,472
Other differences, net	1,764	-541	9
Income tax expense	($143,264)	$22,977	$8,353

Income_Taxes_Schedule_of_Effec1

Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Parenthetical) (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]
Tax adjustment related dividend paid deduction	$62,937
Rate change	91	-2,565	49
LAMAR MEDIA CORP [Member]
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]
Tax adjustment related dividend paid deduction	63,058
Rate change	91	-2,565	49
Puerto Rico [Member]
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]
Corporate income tax rate		39.00%	30.00%
Rate change		2,479
Puerto Rico [Member] | LAMAR MEDIA CORP [Member]
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]
Corporate income tax rate		39.00%	30.00%
Rate change		2,479
British Columbia Bill 2 [Member]
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]
Rate change		86
Change in general corporate income tax rate		11.00%	10.00%
British Columbia Bill 2 [Member] | LAMAR MEDIA CORP [Member]
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]
Rate change		$86
Change in general corporate income tax rate		11.00%	10.00%

Income_Taxes_Components_of_Def

Income Taxes - Components of Deferred Taxes (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Deferred tax assets:
Allowance for doubtful accounts	$255	$2,972
Accrued liabilities not deducted for tax purposes	4,703	37,764
Asset retirement obligation	79	70,166
Net operating loss carry forwards	11,881	138,865
Tax credit carry forwards	209	4,844
Charitable contributions carry forward	9	9
Property, plant and equipment	65
Investment in partnership	354
Gross deferred tax assets	17,555	254,620
Less: valuation allowance	-9	-2,331
Net deferred tax assets	17,546	252,289
Deferred tax liabilities:
Property, plant and equipment		-45,160
Intangibles	-4,321	-314,382
Investment in partnerships		-1,519
Gross deferred tax liabilities	-4,321	-361,061
Net deferred tax assets (liabilities)	13,225	-108,772
Classification in the consolidated balance sheets:
Current deferred tax assets	729	10,378
Current deferred tax liabilities	0	0
Noncurrent deferred tax assets	12,496
Noncurrent deferred tax liabilities		-119,150
Net deferred tax assets (liabilities)	13,225	-108,772
LAMAR MEDIA CORP [Member]
Deferred tax assets:
Allowance for doubtful accounts	255	2,972
Accrued liabilities not deducted for tax purposes	4,703	37,764
Asset retirement obligation	79	70,166
Net operating loss carry forwards	11,881	89,496
Tax credit carry forwards	209	19,615
Charitable contributions carry forward	9	9
Property, plant and equipment	65
Investment in partnership	354
Gross deferred tax assets	17,555	220,022
Less: valuation allowance	-9	-1,760
Net deferred tax assets	17,546	218,262
Deferred tax liabilities:
Property, plant and equipment		-45,160
Intangibles	-4,321	-313,746
Investment in partnerships		-1,519
Gross deferred tax liabilities	-4,321	-360,425
Net deferred tax assets (liabilities)	13,225	-142,163
Classification in the consolidated balance sheets:
Current deferred tax assets	729	10,378
Current deferred tax liabilities	0	0
Noncurrent deferred tax assets	12,496
Noncurrent deferred tax liabilities		-152,541
Net deferred tax assets (liabilities)	$13,225	($142,163)

Income_Taxes_Reconciliation_of

Income Taxes - Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Reconciliation Of Unrecognized Tax Benefits [Line Items]
Beginning balance	$35	$75
Additions for tax positions related to current year		1
Additions for tax positions related to prior years	0	0
Reductions for tax positions related to prior years	0	0
Lapse of statute of limitations	-35	-41
Settlements	0	0
Ending Balance	0	35
LAMAR MEDIA CORP [Member]
Reconciliation Of Unrecognized Tax Benefits [Line Items]
Beginning balance	35	75
Additions for tax positions related to current year		1
Additions for tax positions related to prior years	0	0
Reductions for tax positions related to prior years	0	0
Lapse of statute of limitations	-35	-41
Settlements	0	0
Ending Balance	$0	$35

Related_Party_Transactions_Add

Related Party Transactions - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Related Party Transaction [Line Items]
Deferred gains	$85	$85
Receivables from employees	246	126
Interest owned in service contract	26.66%
Aggregate amount payable under the service contract	1,914
LAMAR MEDIA CORP [Member]
Related Party Transaction [Line Items]
Amount payable to parent company	6,955	7,665
Amount contributed to affiliate	$38,201	$37,858

Stockholders_Equity_Additional

Stockholders' Equity - Additional Information (Detail) (USD $)	12 Months Ended	0 Months Ended
	Dec. 31, 2014	Jul. 16, 1999	Dec. 31, 2013	Dec. 11, 2014
Class of Stock [Line Items]
Liquidation value of outstanding preferred stock	$3,649,000
Preferred stock voting right	Series AA preferred stock is entitled to one vote per share and the Class A preferred stock is not entitled to vote
Class B common stock voting rights	Holders of Class B common stock have ten votes per share on all matters in which the holders of common stock are entitled to vote and holders of Class A common stock have one vote per share on such matters
Treasury stock retired shares	17,270,930
Treasury stock retired value	896,818,000
Authorized amount of Stock repurchase	0
Treasury Stock [Member]
Class of Stock [Line Items]
Treasury stock retired shares	17,270,930
Treasury stock retired value	-896,818,000
Additional Paid-in Capital [Member]
Class of Stock [Line Items]
Treasury stock retired value	896,801,000
Series AA Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, shares authorized	5,720	5,720	5,720
Preferred stock, par value	$0.00	$0.00	$0.00
Preferred stock, outstanding	5,720		5,720
Dividends paid to preferred stock		$15.95
Amount entitled		$638
Preferred Class A [Member]
Class of Stock [Line Items]
Preferred stock, shares authorized	0	1,000,000	10,000
Preferred stock, par value	$638	$638	$638
Preferred stock, outstanding	0	0	0
Dividends paid to preferred stock		$15.95
Amount entitled		$638
Common Class A [Member]
Class of Stock [Line Items]
Authorized amount of Stock repurchase				250,000,000
Common Class A [Member] | Common Stock [Member]
Class of Stock [Line Items]
Treasury stock retired value	$17,000

Stock_Compensation_Plans_Addit

Stock Compensation Plans - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting terms	Vesting terms ranging from three to five years which primarily includes 1) options that vest in one-fifth increments beginning on the grant date and continuing on each of the first four anniversaries of the grant date and 2) options that cliff-vest on the fifth anniversary of the grant date.
Accrued expenses, liability	$13,283	$6,757
Period of graded vesting for option valuation	4 years
Period of cliff vesting for option valuation	5 years
Expected dividend yield	2.00%	0.00%	0.00%
Total unrecognized compensation cost related to nonvested awards	17,017
Weighted average number of years over which compensation cost related to nonvested awards is expected to be recognized	1 year 6 months 18 days
Shares available for future stock option and restricted share grants to employees and directors under existing plans	2,632,628
Aggregate intrinsic value of options outstanding	55,169
Aggregate intrinsic value of options exercisable	42,350
Total intrinsic value of options exercised	10,806
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Range of awards of target number of share	0.00%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	5 years
Range of awards of target number of share	100.00%
Restricted Stock Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration date of options granted under equity incentive plan	10 years
2009 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future stock option and restricted share grants to employees and directors under existing plans	307,448	327,689
Performance Based Compensation [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense related to performance based compensation agreements	$14,210
Common Class A [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected Volatility	90.00%
Volatility rate on publicly traded options	10.00%
Common Class A [Member] | 1996 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
New employee stock purchase plan, which reserved additional shares of common stock	15,500,000
Common Class A [Member] | 2009 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
New employee stock purchase plan, which reserved additional shares of common stock	588,154
Employee stock purchase plan, which available for issuance of common stock	88,154
Additional shares reserved under 2009 ESPP	80,209

Stock_Compensation_Plans_Weigh

Stock Compensation Plans - Weighted Average Fair Value of Options Granted (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Dividend Yield	2.00%	0.00%	0.00%
Expected Volatility	48.00%	51.00%	52.00%
Risk Free Interest Rate	1.00%	1.00%	2.00%
Expected Lives	6 years	6 years	5 years

Stock_Compensation_Plans_Stock

Stock Compensation Plans - Stock Option Transactions Under Various Stock-Based Employee Compensation Plans (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Outstanding, Beginning Balance, Shares	3,232,423
Granted, Shares	87,000
Exercised, Shares	-522,032	-682,263	-586,563
Forfeited, Shares	-12,200
Expired, Shares	-10,600
Outstanding, Ending Balance, Shares	2,774,591	3,232,423
Exercisable, Ending Balance, Shares	1,622,891
Outstanding, Beginning Balance, Weighted Average Exercise Price	$32.89
Granted, Weighted Average Exercise Price	$51.04
Exercised, Weighted-Average Exercise Price	$31.12
Forfeited, Weighted Average Exercise Price	$43.89
Expired, Weighted Average Exercise Price	$28.13
Outstanding, Ending Balance, Weighted Average Exercise Price	$33.76	$32.89
Exercisable, Ending Balance, Weighted Average Exercise Price	$27.54
Outstanding, Ending balance, Weighted Average Remaining Contractual Term	6 years 7 months 28 days
Exercisable, Ending Balance, Weighted Average Remaining Contractual Term	5 years 7 months 17 days

Stock_Compensation_Plans_Summa

Stock Compensation Plans - Summary of Espp Share Activity (Detail)	12 Months Ended
	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Available for future purchases, December 31, 2014	2,632,628
2009 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Available for future purchases, January 1, 2014	327,689
Additional shares reserved under 2009 ESPP	80,209
Purchases	-100,450
Available for future purchases, December 31, 2014	307,448

Benefit_Plans_Additional_Infor

Benefit Plans - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Letters of credit with bank	$6,624,000
Employees eligibility	Completed one year of service and are at least 21 years of age
Minimum years of service required to participate in Company sponsored saving and profit sharing plan	1 year
Minimum age required to participate in Company sponsored saving and profit sharing plan	21
Employers contribution and compensation	Match 50% of employees' contributions up to 5% of eligible compensation
Employers contribution as percentage of employees contribution	50.00%
Employers contribution as percentage of employees compensation	5.00%
Employees contribution limit	100.00%
Fully vesting period of contribution	3 years
Minimum age for entitlement to benefit of deferred compensation plan	30
Minimum years of experience to attain the benefit of deferred compensation plan	10 years
Deferred compensation arrangement with individual employees contribution minimum	3,000
Deferred compensation arrangement with individual employees contribution maximum	8,000
Deferred Profit Sharing [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employer's contribution	3,973,000	3,581,000	3,184,000
Deferred Compensation Plan [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employer's contribution	$1,400,000	$1,323,000	$1,260,000

Summarized_Financial_Informati1

Summarized Financial Information of Subsidiaries - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Balance of permitted transfers to parent company	$2,269,393	$2,072,542
Description of provisions on senior credit facility transfers to Lamar Advertising not subject to additional restrictions	(i) the total debt ratio is equal to or greater than 6.0 to 1 or (ii) the senior debt ratio is equal to or greater than 3.5 to 1.
Debt ratio	6
Description of actual position on senior credit facility transfers to Lamar Advertising not subject to additional restrictions	The total debt ratio was less than 6.0 to 1 and Lamar Media's senior debt ratio was less than 3.5 to 1; therefore, dividends or distributions to Lamar Advertising were not subject to any additional restrictions under the senior credit facility.
Debt ratio related to actual position on senior credit facility	6
Senior Credit Facility [Member]
Debt Instrument [Line Items]
Senior debt ratio	3.5
Senior Subordinated Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Senior debt ratio	3.5

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments - Additional Information (Detail) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Fair Value Disclosures [Abstract]
Estimated fair value of Long-term debt (including current maturities)	$1,933,254
Gross amount of company's long term debt	1,899,895
Carrying amount of company's long term debt	$1,899,895

Information_about_Geographic_A1

Information about Geographic Areas - Additional Information (Detail) (Foreign Countries [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Net carrying value of long lived assets	$7,324	$8,838
External Customers [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue from external customers	$33,124	$34,013	$32,761

Quarterly_Financial_Data_Summa

Quarterly Financial Data - Summary of Quarterly Financial Data (Detail) (USD $)	12 Months Ended			3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013
Interim Reporting [Line Items]
Net revenues	$1,287,060	$1,245,842	$1,179,736
Net (loss) income applicable to common stock	253,153	39,774	7,525
Net (loss) income	253,518	40,139	7,890
Net (loss) income per common share basic	$2.66	$0.42	$0.08
Net (loss) income per common share - diluted	$2.66	$0.42	$0.08
LAMAR MEDIA CORP [Member]
Interim Reporting [Line Items]
Net revenues	1,287,060	1,245,842	1,179,736
Net (loss) income	287,035	40,338	8,115
Adjusted [Member]
Interim Reporting [Line Items]
Net revenues				336,696	334,998	330,433	284,933	320,352	321,141	327,744	276,605
Net revenues less direct advertising expenses				221,600	222,610	216,156	173,425	210,390	211,501	217,021	170,086
Net (loss) income applicable to common stock				207,791	34,959	15,331	-4,928	10,094	17,003	23,031	-10,354
Net (loss) income per common share basic				$2.18	$0.37	$0.16	($0.05)	$0.11	$0.18	$0.24	($0.11)
Net (loss) income per common share - diluted				$2.18	$0.37	$0.16	($0.05)	$0.11	$0.18	$0.24	($0.11)
Adjusted [Member] | LAMAR MEDIA CORP [Member]
Interim Reporting [Line Items]
Net revenues				336,696	334,998	330,433	284,933	320,352	321,141	327,744	276,605
Net revenues less direct advertising expenses				221,600	222,610	216,156	173,425	210,390	211,501	217,021	170,086
Net (loss) income				$241,230	$35,103	$15,480	($4,778)	$10,228	$17,144	$23,178	($10,212)

Schedule_II_Valuation_and_Qual1

Schedule II - Valuation and Qualifying Accounts (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Deducted in Balance Sheet from Trade Accounts Receivable: Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$7,615	$7,615	$7,500
Charged to Costs and Expenses	5,947	6,034	5,484
Deductions	5,605	6,034	5,369
Balance at End of Period	7,957	7,615	7,615
Deducted in Balance Sheet from Trade Accounts Receivable: Allowance for Doubtful Accounts [Member] | LAMAR MEDIA CORP [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	7,615	7,615	7,500
Charged to Costs and Expenses	5,947	6,034	5,484
Deductions	5,605	6,034	5,369
Balance at End of Period	7,957	7,615	7,615
Deducted in Balance Sheet from Intangible Assets: Amortization of Intangible Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	1,900,026	1,794,415	1,705,402
Charged to Costs and Expenses	96,139	106,533	102,941
Deductions	1,073	922	13,928
Balance at End of Period	1,995,092	1,900,026	1,794,415
Deducted in Balance Sheet from Intangible Assets: Amortization of Intangible Assets [Member] | LAMAR MEDIA CORP [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	1,899,080	1,793,476	1,704,492
Charged to Costs and Expenses	96,139	106,533	102,941
Deductions	1,073	929	13,957
Balance at End of Period	$1,994,146	$1,899,080	$1,793,476

Schedule_III_Schedule_of_Real_

Schedule III - Schedule of Real Estate and Accumulated Depreciation (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	Displays
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of advertising displays	317,597
Encumbrances	$0
Initial Cost	0
Gross Carrying Amount	2,520,644,000	2,459,425,000	2,378,940,000
Accumulated Depreciation	-1,903,434,000	-1,799,325,000	-1,657,784,000
Construction Date	Various
Acquisition Date	Various
LAMAR MEDIA CORP [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of advertising displays	317,597
Encumbrances	0
Initial Cost	0
Gross Carrying Amount	2,520,644,000	2,459,425,000	2,378,940,000
Accumulated Depreciation	($1,903,434,000)	($1,799,325,000)	($1,657,784,000)
Construction Date	Various
Acquisition Date	Various
Minimum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Useful Lives	5 years
Minimum [Member] | LAMAR MEDIA CORP [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Useful Lives	5 years
Maximum [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Useful Lives	20 years
Maximum [Member] | LAMAR MEDIA CORP [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Useful Lives	20 years

Schedule_III_Schedule_of_Real_1

Schedule III - Schedule of Real Estate and Accumulated Depreciation (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2014
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of single asset exceeded 5% of the total gross carrying amount	0
Percentage of asset contribution to total gross carrying amount	5.00%
LAMAR MEDIA CORP [Member]
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]
Number of single asset exceeded 5% of the total gross carrying amount	0
Percentage of asset contribution to total gross carrying amount	5.00%

Schedule_III_Summary_of_Compna

Schedule III - Summary of Compnay's Real Estate Assets (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Gross real estate assets:
Balance at the beginning of the year	$2,459,425	$2,378,940
Additions for construction, acquisition, improvements to structures	98,857	112,459
Assets sold or written-off	-36,392	-31,328
Foreign exchange	-1,246	-646
Balance at the end of the year	2,520,644	2,459,425
Accumulated depreciation:
Balance at the beginning of the year	1,799,325	1,657,784
Depreciation	135,679	161,172
Assets sold or written-off	-30,994	-19,213
Foreign exchange	-576	-418
Balance at the end of the year	1,903,434	1,799,325
LAMAR MEDIA CORP [Member]
Gross real estate assets:
Balance at the beginning of the year	2,459,425	2,378,940
Additions for construction, acquisition, improvements to structures	98,857	112,459
Assets sold or written-off	-36,392	-31,328
Foreign exchange	-1,246	-646
Balance at the end of the year	2,520,644	2,459,425
Accumulated depreciation:
Balance at the beginning of the year	1,799,325	1,657,784
Depreciation	135,679	161,172
Assets sold or written-off	-30,994	-19,213
Foreign exchange	-576	-418
Balance at the end of the year	$1,903,434	$1,799,325