Lamar Advertising (LAMR) 10-K 27 Feb 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended				12 Months Ended
	Dec. 31, 2013	Jun. 28, 2013	Feb. 18, 2014	Feb. 18, 2014	Dec. 31, 2013	Jun. 28, 2013	Feb. 18, 2014
			Common Class A [Member]	Common Class B [Member]	LAMAR MEDIA CORP [Member]	LAMAR MEDIA CORP [Member]	LAMAR MEDIA CORP [Member]
							Class Units [Member]
Document Information [Line Items]	'	'	'	'	'	'	'
Document Type	'10-K	'	'	'	'10-K	'	'
Amendment Flag	'false	'	'	'	'false	'	'
Document Period End Date	31-Dec-13	'	'	'	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'	'	'2013	'	'
Document Fiscal Period Focus	'FY	'	'	'	'FY	'	'
Trading Symbol	'LAMR	'	'	'	'	'	'
Entity Registrant Name	'LAMAR ADVERTISING CO/NEW	'	'	'	'LAMAR MEDIA CORP/DE	'	'
Entity Central Index Key	'0001090425	'	'	'	'0000899045	'	'
Current Fiscal Year End Date	'--12-31	'	'	'	'--12-31	'	'
Entity Well-known Seasoned Issuer	'Yes	'	'	'	'No	'	'
Entity Current Reporting Status	'Yes	'	'	'	'Yes	'	'
Entity Voluntary Filers	'No	'	'	'	'No	'	'
Entity Filer Category	'Large Accelerated Filer	'	'	'	'Non-accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	'	80,226,132	14,610,365	'	'	100
Entity Public Float	'	$3,085,912,810.91	'	'	'	$0	'

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$33,212	$58,911
Receivables, net of allowance for doubtful accounts	161,741	159,829
Prepaid expenses	42,048	41,132
Deferred income tax assets	10,378	10,817
Other current assets	34,679	30,546
Total current assets	282,058	301,235
Property, plant and equipment	3,036,456	2,940,449
Less accumulated depreciation and amortization	-1,914,527	-1,760,090
Net property, plant and equipment	1,121,929	1,180,359
Goodwill	1,503,553	1,485,150
Intangible assets, net	419,385	468,312
Deferred financing costs, net of accumulated amortization	30,290	37,787
Other assets	44,403	41,187
Total assets	3,401,618	3,514,030
Current liabilities:	'	'
Trade accounts payable	13,341	13,539
Current maturities of long-term debt	55,935	33,134
Accrued expenses	98,924	99,461
Deferred income	77,153	72,974
Total current liabilities	245,353	219,108
Long-term debt	1,882,867	2,127,720
Deferred income tax liabilities	119,150	99,530
Asset retirement obligation	200,831	189,659
Other liabilities	20,471	16,388
Total liabilities	2,468,672	2,652,405
Stockholder's equity:	'	'
Additional paid-in-capital	2,470,375	2,432,518
Accumulated comprehensive income	3,867	5,978
Accumulated deficit	-647,577	-687,351
Stockholder's equity	932,946	861,625
Cost of shares held in treasury, 17,216,635 and 17,119,205 shares in 2013 and 2012, respectively	-893,831	-889,631
Total liabilities and stockholder's equity	3,401,618	3,514,030
LAMAR MEDIA CORP [Member]	'	'
Current assets:	'	'
Cash and cash equivalents	32,712	58,411
Receivables, net of allowance for doubtful accounts	161,741	159,829
Prepaid expenses	42,048	41,132
Deferred income tax assets	10,378	10,817
Other current assets	34,679	30,546
Total current assets	281,558	300,735
Property, plant and equipment	3,036,456	2,940,449
Less accumulated depreciation and amortization	-1,914,527	-1,760,090
Net property, plant and equipment	1,121,929	1,180,359
Goodwill	1,493,401	1,474,998
Intangible assets, net	418,919	467,837
Deferred financing costs, net of accumulated amortization	28,336	35,834
Other assets	39,118	35,901
Total assets	3,383,261	3,495,664
Current liabilities:	'	'
Trade accounts payable	13,341	13,539
Current maturities of long-term debt	55,935	33,134
Accrued expenses	95,632	96,860
Deferred income	77,153	72,974
Total current liabilities	242,061	216,507
Long-term debt	1,882,867	2,127,720
Deferred income tax liabilities	152,541	132,785
Asset retirement obligation	200,831	189,659
Other liabilities	20,471	16,388
Total liabilities	2,498,771	2,683,059
Stockholder's equity:	'	'
Common stock, value	'	'
Additional paid-in-capital	2,644,015	2,606,157
Accumulated comprehensive income	3,867	5,978
Accumulated deficit	-1,763,392	-1,799,530
Stockholder's equity	884,490	812,605
Total liabilities and stockholder's equity	3,383,261	3,495,664
Series AA Preferred Stock [Member]	'	'
Stockholder's equity:	'	'
Preferred stock, value	'	'
Preferred Class A [Member]	'	'
Stockholder's equity:	'	'
Preferred stock, value	'	'
Common Class A [Member]	'	'
Stockholder's equity:	'	'
Common stock, value	97	96
Common Class B [Member]	'	'
Stockholder's equity:	'	'
Common stock, value	$15	$15

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Allowance for doubtful accounts	$7,615	$7,615
Accumulated amortization	25,180	25,867
Shares held in treasury	17,216,635	17,119,205
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	10,000	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	175,000,000	175,000,000
Common stock, shares issued	97,426,144	96,082,868
Common stock, shares outstanding	80,209,509	78,963,663
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	14,910,365
Common stock, shares outstanding	14,610,365	14,910,365
LAMAR MEDIA CORP [Member]	'	'
Allowance for doubtful accounts	7,615	7,615
Accumulated amortization	$15,893	$16,579
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

Consolidated_Statements_of_Ope

Consolidated Statements of Operations and Comprehensive Income (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net revenues	$1,245,842	$1,179,736	$1,130,714
Operating expenses (income):	'	'	'
Direct advertising expenses (exclusive of depreciation and amortization)	436,844	418,538	409,052
General and administrative expenses (exclusive of depreciation and amortization)	231,574	211,320	202,437
Corporate expenses (exclusive of depreciation and amortization)	57,212	53,086	46,533
Depreciation and amortization	300,579	296,083	299,639
Gain on disposition of assets	-3,804	-13,817	-10,548
Total Operating Expenses	1,022,405	965,210	947,113
Operating income	223,437	214,526	183,601
Other expense (income):	'	'	'
Loss on extinguishment of debt	14,345	41,632	677
Interest income	-165	-331	-569
Interest expense	146,277	157,093	171,093
Non-operating (Income) Expenses	160,457	198,394	171,201
Income (loss) before income tax expense	62,980	16,132	12,400
Income tax expense	22,841	8,242	5,542
Net income	40,139	7,890	6,858
Preferred stock dividends	365	365	365
Net income applicable to common stock	39,774	7,525	6,493
Earnings per share:	'	'	'
Basic earnings per share	$0.42	$0.08	$0.07
Diluted earnings per share	$0.42	$0.08	$0.07
Cash dividends declared per share of common stock	'	'	'
Weighted average common shares outstanding	94,387,230	93,379,246	92,851,067
Incremental common shares from dilutive stock options	358,285	287,395	322,718
Weighted average common shares assuming dilution	94,745,515	93,666,641	93,173,785
Statements of Comprehensive Income	'	'	'
Net income	40,139	7,890	6,858
Other comprehensive income (loss), net of tax	'	'	'
Foreign currency translation adjustments	-2,111	652	-784
Comprehensive income (loss)	38,028	8,542	6,074
LAMAR MEDIA CORP [Member]	'	'	'
Net revenues	1,245,842	1,179,736	1,130,714
Operating expenses (income):	'	'	'
Direct advertising expenses (exclusive of depreciation and amortization)	436,844	418,538	409,052
General and administrative expenses (exclusive of depreciation and amortization)	231,574	211,320	202,437
Corporate expenses (exclusive of depreciation and amortization)	56,877	52,750	46,175
Depreciation and amortization	300,579	296,083	299,639
Gain on disposition of assets	-3,804	-13,817	-10,548
Total Operating Expenses	1,022,070	964,874	946,755
Operating income	223,772	214,862	183,959
Other expense (income):	'	'	'
Loss on extinguishment of debt	14,345	41,632	677
Interest income	-165	-331	-569
Interest expense	146,277	157,093	171,093
Non-operating (Income) Expenses	160,457	198,394	171,201
Income (loss) before income tax expense	63,315	16,468	12,758
Income tax expense	22,977	8,353	5,838
Net income	40,338	8,115	6,920
Statements of Comprehensive Income	'	'	'
Net income	40,338	8,115	6,920
Other comprehensive income (loss), net of tax	'	'	'
Foreign currency translation adjustments	-2,111	652	-784
Comprehensive income (loss)	$38,227	$8,767	$6,136

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, 2010

$808,938

$758,904

'

'

'

$94

$15

($885,037)

$2,389,125

$2,562,765

$6,110

$6,110

($701,369)

($1,809,971)

Non-cash compensation

11,650

'

'

'

'

'

'

'

11,650

'

'

'

'

'

Contribution from parent

'

16,553

'

'

'

'

'

'

'

16,553

'

'

'

'

Exercise of stock options

1,998

'

'

'

'

1

'

'

1,997

'

'

'

'

'

Issuance of shares of common stock through employee purchase plan

3,459

'

'

'

'

'

'

'

3,459

'

'

'

'

'

Tax shortfall related to options exercised

-552

'

'

'

'

'

'

'

-552

'

'

'

'

'

Purchase of treasury stock

-3,481

'

'

'

'

'

'

-3,481

'

'

'

'

'

'

Foreign currency translation

-784

-784

'

'

'

'

'

'

'

'

-784

-784

'

'

Net income (loss)

6,858

6,920

'

'

'

'

'

'

'

'

'

'

6,858

6,920

Dividends

-365

'

'

'

'

'

'

'

'

'

'

'

-365

'

Dividend from parent

'

-3,481

'

'

'

'

'

'

'

'

'

'

'

-3,481

Ending Balance at Dec. 31, 2011

827,721

778,112

'

'

'

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 (loss)

7,890

8,115

'

'

'

'

'

'

'

'

'

'

7,890

8,115

Dividends

-365

'

'

'

'

'

'

'

'

'

'

'

-365

'

Dividend from parent

'

-1,113

'

'

'

'

'

'

'

'

'

'

'

-1,113

Ending Balance at Dec. 31, 2012

861,625

812,605

'

'

'

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 (loss)

40,139

40,338

'

'

'

'

'

'

'

'

'

'

40,139

40,338

Dividends

-365

'

'

'

'

'

'

'

'

'

'

'

-365

'

Dividend from parent

'

-4,200

'

'

'

'

'

'

'

'

'

'

'

-4,200

Ending Balance at Dec. 31, 2013

$932,946

$884,490

'

'

'

$97

$15

($893,831)

$2,470,375

$2,644,015

$3,867

$3,867

($647,577)

($1,763,392)

Consolidated_Statements_of_Sto1

Consolidated Statements of Stockholders' Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Exercise of stock options	682,263	586,563	113,359
Purchase of treasury stock	97,430	36,553	83,802
Preferred stock dividend shares	$63.80	$63.80	$63.80
Treasury Stock [Member]	'	'	'
Purchase of treasury stock	97,430	36,553	83,802
Additional Paid-in Capital [Member]	'	'	'
Exercise of stock options	682,263	586,563	113,359
Accumulated Deficit [Member]	'	'	'
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, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:	'	'	'
Net income	$40,139	$7,890	$6,858
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Depreciation and amortization	300,579	296,083	299,639
Non-cash compensation	24,936	14,466	11,650
Amortization included in interest expense	14,667	17,741	18,517
Gain on disposition of assets and investments	-3,804	-13,817	-10,548
Loss on extinguishment of debt	14,345	41,632	677
Deferred income tax expense	18,749	6,316	2,621
Provision for doubtful accounts	6,034	5,484	7,591
(Increase) decrease in:	'	'	'
Receivables	-6,663	-13,783	-14,622
Prepaid expenses	788	1,903	1,201
Other assets	-4,970	-2,876	-1,863
Increase (decrease) in:	'	'	'
Trade accounts payable	-89	-127	-489
Accrued expenses	-6,371	2,259	-630
Other liabilities	-3,635	12,738	-1,781
Cash flows provided by operating activities	394,705	375,909	318,821
Cash flows from investing activities:	'	'	'
Capital expenditures	-105,650	-105,570	-107,070
Acquisitions	-92,248	-206,068	-23,497
(Increase) decrease in notes receivable	-840	122	166
Proceeds from disposition of assets and investments	6,869	8,117	13,146
Cash flows used in investing activities	-191,869	-303,399	-117,255
Cash flows from financing activities:	'	'	'
Net proceeds from issuance of common stock	20,893	13,855	5,457
Cash used for purchase of treasury shares	-4,200	-1,113	-3,481
Proceeds received under revolving credit facility	184,000	15,000	'
Payments on revolving credit facility	-34,000	-15,000	'
Payments under credit agreement	-33,051	-311,275	-213,866
Net proceeds from senior credit facility	'	100,000	'
Debt issuance costs	-89	-22,500	'
Net proceeds from note offering	'	1,035,000	'
Net payment on senior subordinated notes	-360,383	-861,019	-47,187
Dividends	-365	-365	-365
Cash flows used in financing activities	-227,195	-47,417	-259,442
Effect of exchange rate changes in cash and cash equivalents	-1,340	315	-300
Net (decrease) increase in cash and cash equivalents	-25,699	25,408	-58,176
Cash and cash equivalents at beginning of period	58,911	33,503	91,679
Cash and cash equivalents at end of period	33,212	58,911	33,503
Supplemental disclosures of cash flow information:	'	'	'
Cash paid for interest	140,048	143,589	153,800
Cash paid for state and federal income taxes	4,096	2,392	2,651
LAMAR MEDIA CORP [Member]	'	'	'
Cash flows from operating activities:	'	'	'
Net income	40,338	8,115	6,920
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Depreciation and amortization	300,579	296,083	299,639
Non-cash compensation	24,936	14,466	11,650
Amortization included in interest expense	14,667	17,741	18,517
Gain on disposition of assets and investments	-3,804	-13,817	-10,548
Loss on extinguishment of debt	14,345	41,632	677
Deferred income tax expense	18,885	6,426	2,916
Provision for doubtful accounts	6,034	5,484	7,591
(Increase) decrease in:	'	'	'
Receivables	-6,663	-13,233	-14,622
Prepaid expenses	788	1,903	1,201
Other assets	-4,970	-2,876	-1,863
Increase (decrease) in:	'	'	'
Trade accounts payable	-89	-127	-489
Accrued expenses	-6,371	2,259	-630
Other liabilities	-21,300	5,301	-10,611
Cash flows provided by operating activities	377,375	369,357	310,348
Cash flows from investing activities:	'	'	'
Capital expenditures	-105,650	-105,570	-107,070
Acquisitions	-92,248	-206,068	-23,497
(Increase) decrease in notes receivable	-840	122	166
Proceeds from disposition of assets and investments	6,869	8,117	13,146
Cash flows used in investing activities	-191,869	-303,399	-117,255
Cash flows from financing activities:	'	'	'
Proceeds received under revolving credit facility	184,000	15,000	'
Payments on revolving credit facility	-34,000	-15,000	'
Payments under credit agreement	-33,051	-311,275	-213,866
Net proceeds from senior credit facility	'	100,000	'
Debt issuance costs	-89	-22,500	'
Net proceeds from note offering	'	1,035,000	'
Net payment on senior subordinated notes	-360,383	-861,019	-47,187
Dividends to parent	-4,200	-1,113	-3,481
Contributions from parent	37,858	19,668	16,553
Cash flows used in financing activities	-209,865	-41,239	-247,981
Effect of exchange rate changes in cash and cash equivalents	-1,340	315	-300
Net (decrease) increase in cash and cash equivalents	-25,699	25,034	-55,188
Cash and cash equivalents at beginning of period	58,411	33,377	88,565
Cash and cash equivalents at end of period	32,712	58,411	33,377
Supplemental disclosures of cash flow information:	'	'	'
Cash paid for interest	140,048	143,589	153,800
Cash paid for state and federal income taxes	$4,096	$2,392	$2,651

Significant_Accounting_Policie

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
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 145,000 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 22 states throughout the United States and the province of Ontario, Canada and operates over 38,000 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.
	(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 sell advertising on billboards, buses, shelters and benches and logo plates.
	(c) Adjustment to Previously Reported Amounts
	Immaterial Correction of an Error. During the fourth quarter of 2013, the Company revised previously reported amounts due to a change from recognizing revenue on a monthly basis over the term of the advertising contract to recognizing revenue on a daily basis over the term of the advertising contract. In accordance with Staff Accounting Bulletin (“SAB”) No. 99, Materiality, and SAB No. 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements, management evaluated the materiality of the error from qualitative and quantitative perspectives, and concluded the error was immaterial to the current and prior periods. The correction of the immaterial error resulted in an increase to deferred income liability of $21,651 and $18,486 at December 31, 2012 and 2011, respectively, an increase of accumulated deficit of $13,208 and $11,277 and a reduction in net revenue and net income of $3,165 and $2,773 and $1,931 and $1,692, for the years ended December 31, 2012 and 2011, respectively. The correction also resulted in a decrease of $0.02 in earnings per basic and dilutive share for the years ended December 31, 2012 and 2011.
	Consequently, the Company revised its historical financial statements for fiscal 2012, fiscal 2011 herein, and will revise the quarters within fiscal 2013, when they are published in future filings. The Company recognized the cumulative effect of the error on periods prior to those that are presented herein by increasing deferred income liability and accumulated deficit by $15,713 and $9,585, respectively, as of December 31, 2010.
	(d) 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.
	(e) 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 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, 2013 and 2012; 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.
	(f) 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.
	(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 as services are provided 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, as services are provided. 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:
			2013		2012		2011
	Net revenues		$	7,862	$	6,798	$	7,153
	Direct advertising expenses		$	3,005	$	2,900	$	2,766
	General and administrative expenses		$	4,417	$	3,699	$	3,524
	(i) Income Taxes
	The Company uses the asset and liability method of accounting for income taxes. Under the asset and liability method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.
	(j) 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, 2013, December 31, 2012 and December 31, 2011, there were no dilutive shares excluded from the calculation.
	(k) Share Based Compensation
	Compensation expense for share-based awards is recognized based on the grant date fair value of those awards. Share-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, 2013, 2012, and 2011 were $24,936, $14,466 and $11,650. The $24,936 expensed during the year ended December 31, 2013 consists of (i) $17,340 related to stock options, (ii) $7,231 related to stock grants, made under the Company’s performance-based stock incentive program in 2013 (iii) $365 related to stock awards to directors. See Note 14 for information on the assumptions we used to calculate the fair value of stock-based compensation.
	(l) Cash and Cash Equivalents
	The Company considers all highly-liquid investments with original maturities of three months or less to be cash equivalents.
	(m) 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 Consolidated Statement of Stockholders’ Equity.
	(n) Asset Retirement Obligations
	The Company is required to record the present 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.
	(o) 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.
	(p) 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.
	(q) Subsequent Events
	The Company has performed an evaluation of subsequent events through the date on which the 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 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 22 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.
	(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, 2013
Business Combinations [Abstract]	'
Acquisitions	'
	(2) Acquisitions
	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 preliminary fair market value estimates at the dates of acquisition. The allocations are pending final determination of the fair value of certain assets and liabilities. 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
	Net revenues	$	1,255,376		$	1,225,958
	Net income applicable to common stock	$	40,725		$	12,098
	Net loss per common share — basic	$	0.43		$	0.13
	Net loss per common share — diluted	$	0.43		$	0.13
	Year Ended December 31, 2012
	During the twelve months ended December 31, 2012, the Company completed several acquisitions of outdoor advertising assets for a total purchase price of approximately $230,009, of which $206,068 was in cash and $23,941 in non-cash consideration consisting principally of exchanges of outdoor advertising assets. As a result of the acquisitions, a gain of $9,805 was recorded for transactions which involved the exchange of outdoor advertising assets during the year ended December 31, 2012.
	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 preliminary fair market value estimates at the dates of acquisition. The allocations are pending final determination of the fair value of certain assets and liabilities. The following is a summary of the preliminary allocation of the acquisition costs in the above transactions.
		Total
	Property, plant and equipment	$	74,326
	Goodwill		60,968
	Site locations		78,288
	Non-competition agreements		80
	Customer lists and contracts		18,148
	Other asset		7,763
	Current liabilities		(3,424	)
	Long-term liabilities		(6,140	)
		$	230,009
	Total acquired intangible assets for the year ended December 31, 2012 were $157,484, of which $60,968 was assigned to goodwill. Although goodwill is not amortized for financial statement purposes, $23,937 is expected to be fully deductible for tax purposes. The remaining $96,516 of acquired intangible assets have a weighted average useful life of approximately 14 years. The intangible assets include customer lists and contracts of $18,148 (7 year weighted average useful life) and site locations of $78,288 (15 year weighted average useful life). The aggregate amortization expense related to the 2012 acquisitions for the year ended December 31, 2012 was approximately $679.
	The following unaudited pro forma financial information for the Company gives effect to the 2012 and 2011 acquisitions as if they had occurred on January 1, 2011. 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.
		2012			2011
	Net revenues	$	1,209,540		$	1,174,520
	Net income applicable to common stock	$	8,161		$	6,626
	Net loss per common share — basic	$	0.09		$	0.07
	Net loss per common share — diluted	$	0.09		$	0.07

Noncash_Financing_and_Investin

Non-cash Financing and Investing Activities	12 Months Ended
	Dec. 31, 2013
Non-cash Financing and Investing Activities	'
	(3) Non-cash Financing and Investing Activities
	For the period ended December 31, 2013 and December 31, 2012, the Company had $4,982 and $23,941 non-cash investing activities related to acquisitions of outdoor advertising assets. For the year ended December 31, 2011, the Company had non-cash investing activities of $4,000 and $1,900 related to deposits paid in prior periods for the purchase of an aircraft in January 2011 that had a total purchase price of $11,539 and settlement of a notes receivable by a transfer of land, respectively.
LAMAR MEDIA CORP [Member]	'
Non-cash Financing and Investing Activities	'
	(2) Non-cash Financing and Investing Activities
	For the period ended December 31, 2013 and December 31, 2012, the Company had non-cash investing activities of $4,982 and $23,941 related to acquisitions of outdoor advertising assets. For the year ended December 31, 2011, the Company had non-cash investing activities of $4,000 and $1,900 related to deposits paid in prior periods for the purchase of an aircraft in January 2011 that had a total purchase price of $11,539 and settlement of a notes receivable by a transfer of land, respectively.

Property_Plant_and_Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2013
Property Plant And Equipment [Abstract]	'
Property, Plant and Equipment	'
	(4) Property, Plant and Equipment
	Major categories of property, plant and equipment at December 31, 2013 and 2012 are as follows:
		Estimated Life	2013		2012
		(Years)
	Land	—	$	312,883	$	317,223
	Building and improvements	10 — 39		125,724		115,646
	Advertising structures	5 — 15		2,459,313		2,378,940
	Automotive and other equipment	3 — 7		138,424		128,640
			$	3,036,344	$	2,940,449

Goodwill_and_Other_Intangible_

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2013
Goodwill and Other Intangible Assets	'
	(5) Goodwill and Other Intangible Assets
	The following is a summary of intangible assets at December 31, 2013 and December 31, 2012:
		Estimated			2013				2012
		Life
		(Years)			Gross Carrying		Accumulated		Gross Carrying		Accumulated
					Amount		Amortization		Amount		Amortization
	Amortizable Intangible Assets:
	Customer lists and contracts		7 — 10		$	492,299	$	463,188	$	482,883	$	455,549
	Non-competition agreements		3 — 15			63,933		62,914		63,519		62,566
	Site locations		15			1,495,635		1,106,947		1,449,181		1,009,631
	Other		5 — 15			14,008		13,441		13,608		13,133
					$	2,065,875	$	1,646,490	$	2,009,191	$	1,540,879
	Unamortizable Intangible Assets:
	Goodwill				$	1,757,089	$	253,536	$	1,738,686	$	253,536
	The changes in the gross carrying amount of goodwill for the year ended December 31, 2013 are as follows:
	Balance as of December 31, 2012	$	1,738,686
	Goodwill acquired during the year		18,631
	Purchase price adjustments and other		(228	)
	Impairment losses		—
	Balance as of December 31, 2013	$	1,757,089
	Amortization expense for the years ended December 31, 2013, 2012 and 2011 was $106,533, $102,941 and $102,918, respectively. The following is a summary of the estimated amortization expense for future years:
	2014	$	94,763
	2015		58,713
	2016		48,503
	2017		43,255
	2018		38,542
	Thereafter		135,609
	Total	$	419,385
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, 2013 and December 31, 2012:
		Estimated			2013				2012
		Life
		(Years)			Gross Carrying		Accumulated		Gross Carrying		Accumulated
					Amount		Amortization		Amount		Amortization
	Amortizable Intangible Assets:
	Customer lists and contracts		7—10		$	492,299	$	463,188	$	482,883	$	455,549
	Non-competition agreement		3—15			63,933		62,914		63,519		62,566
	Site locations		15			1,495,635		1,106,945		1,449,181		1,009,631
	Other		5—15			13,463		13,364		13,063		13,063
					$	2,065,330	$	1,646,411	$	2,008,646	$	1,540,809
	Unamortizable Intangible Assets:
	Goodwill				$	1,746,068	$	252,667	$	1,727,665	$	252,667
	The changes in the gross carrying amount of goodwill for the year ended December 31, 2013 are as follows:
	Balance as of December 31, 2012	$	1,727,665
	Goodwill acquired during the year		18,631
	Purchase price adjustments and other		(228	)
	Impairment losses		—
	Balance as of December 31, 2013	$	1,746,068

Leases

Leases	12 Months Ended
	Dec. 31, 2013
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, 2013:
	2014	$	155,374
	2015	$	125,503
	2016	$	109,737
	2017	$	94,932
	2018	$	80,956
	Thereafter	$	595,410
	Rental expense related to the Company’s operating leases was $222,638, $209,110, and $205,378 for the years ended December 31, 2013, 2012 and 2011, respectively.

Accrued_Expenses

Accrued Expenses	12 Months Ended
	Dec. 31, 2013
Accrued Expenses	'
	(7) Accrued Expenses
	The following is a summary of accrued expenses at December 31, 2013 and 2012:
		2013		2012
	Payroll	$	11,311	$	12,854
	Interest		23,451		31,888
	Insurance benefits		13,090		12,537
	Accrued lease expense		37,346		32,100
	Other		13,726		10,082
		$	98,924	$	99,461
LAMAR MEDIA CORP [Member]	'
Accrued Expenses	'
	(4) Accrued Expenses
	The following is a summary of accrued expenses at December 31, 2013 and 2012:
		2013		2012
	Payroll	$	11,311	$	12,854
	Interest		23,451		31,888
	Other		60,870		52,118
		$	95,632	$	96,860

Longterm_Debt

Long-term Debt	12 Months Ended
	Dec. 31, 2013
Long-term Debt	'
	(8) Long-term Debt
	Long-term debt consists of the following at December 31, 2013 and 2012:
			2013			2012
	Senior Credit Agreement		$	502,106		$	384,664
	7 7/8% Senior Subordinated Notes			400,000			400,000
	5 7/8% Senior Subordinated Notes			500,000			500,000
	5% Senior Subordinated Notes			535,000			535,000
	9 3/4% Senior Notes			—			339,121
	Other notes with various rates and terms			1,696			2,069
				1,938,802			2,160,854
	Less current maturities			(55,935	)		(33,134	)
	Long-term debt excluding current maturities		$	1,882,867		$	2,127,720
	Long-term debt matures as follows:
	2014		$	55,935
	2015		$	335,698
	2016		$	27,142
	2017		$	85,000
	2018		$	400,000
	Later years		$	1,035,027
	9 3/4% Senior Notes
	On March 27, 2009, Lamar Media completed an institutional private placement of $350,000 in aggregate principal amount ($314,927 gross proceeds) of 9 3/4% Senior Notes due 2014. The institutional private placement resulted in net proceeds to Lamar Media of approximately $307,489. The senior notes mature on April 1, 2014 and bear interest at a rate of 9 3/4% per annum, which is payable semi-annually on April 1 and October 1 of each year, beginning October 1, 2009. Interest will be computed on the basis of a 360-day year comprised of twelve 30-day months. The terms of the senior notes will, among other things, limit Lamar Media’s and its restricted subsidiaries’ ability to (i) incur additional debt and issue preferred stock; (ii) make certain distributions, investments and other restricted payments; (iii) create certain liens; (iv) enter into transactions with affiliates; (v) have the restricted subsidiaries make payments to Lamar Media; (vi) merge, consolidate or sell substantially all of Lamar Media’s or the restricted subsidiaries’ assets; and (vii) sell assets. These covenants are subject to a number of exceptions and qualifications.
	Lamar Media may redeem up to 35% of the aggregate principal amount of the senior notes, at any time and from time to time, at a price equal to 109.75% of the aggregate principal amount so redeemed, plus accrued and unpaid interest thereon (including additional interest, if any), with the net cash proceeds of certain public equity offerings completed before April 1, 2012. At any time prior to April 1, 2014, Lamar Media may redeem some or all of the senior notes at a price equal to 100% of the principal amount plus a make-whole premium. 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 senior notes at a price equal to 101% of the principal amount of the senior notes, plus accrued and unpaid interest (including additional interest, if any), up to but not including the repurchase date.
	On December 4, 2013, Lamar Media redeemed in full all $350,000 in aggregate principal amount of its 9 3/4% Senior Notes. A loss of $14,345 was recorded as a result of this transaction, of which $3,962 was non-cash. No 9 3/4% Senior Notes remained outstanding at December 31, 2013.
	7 7/8% Senior Subordinated Notes
	On April 22, 2010, Lamar Media completed an institutional private placement of $400,000 aggregate principal amount of 7 7/8% Senior Subordinated Notes due 2018. The institutional private placement resulted in net proceeds to Lamar Media of approximately $392,000.
	Lamar Media may redeem up to 35% of the aggregate principal amount of the Notes, at any time and from time to time, at a price equal to 107.875% of the aggregate principal amount so redeemed, plus accrued and unpaid interest thereon (including additional interest, if any), with the net cash proceeds of certain public equity offerings completed before April 15, 2013, provided that following the redemption at least 65% of the 7 7/8% Senior Subordinated Notes that were originally issued remain outstanding. At any time prior to April 15, 2014, Lamar Media may redeem some or all of the 7 7/8% Senior Subordinated Notes at a price equal to 100% of the principal amount plus a make-whole premium. On or after April 15, 2014, Lamar Media may redeem the 7 7/8% Senior Subordinated Notes, in whole or part, in cash at redemption prices specified in the Indenture.
	5 7/8% Senior Subordinated Notes
	On February 9, 2012, Lamar Media completed an institutional private placement of $500,000 aggregate principle amount of 5 7/8% Senior Subordinated Notes, due 2022. 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 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 Notes that were originally issued remain outstanding. At any time prior to February 1, 2017, Lamar Media may redeem some or all of the 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 Notes, in whole or in part, in cash at redemption prices specified in the 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 Notes at a price equal to 101% of the principal amount of the 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 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 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 Notes that were originally issued remain outstanding. At any time prior to May 1, 2018, Lamar Media may redeem some or all of the 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 Notes, in whole or in part, in cash at redemption prices specified in the 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 Notes at a price equal to 101% of the principal amount of the Notes, plus accrued and unpaid interest, up to but not including the repurchase date.
	Senior Credit Facility (as of December 31, 2013)
	On February 9, 2012, Lamar Media entered into a restatement agreement with respect to its existing senior credit facility in order to fund a new $100,000 Term loan A facility and to make certain covenant changes to the senior credit facility, which was entered into on April 28, 2010, as amended on June 11, 2010, November 18, 2010 and February 9, 2012 and further amended on October 24, 2013, for which JPMorgan Chase Bank, N.A. serves as administrative agent. The senior credit facility consists of a $250,000 revolving credit facility, a $270,000 term loan A-1 facility, a $30,000 term loan A-2 facility, a $100,000 term loan A-3 facility, a $575,000 term loan B facility and a $300,000 incremental facility, which may be increased by up to an additional $200,000 based upon our satisfaction of a senior debt ratio test (defined as total consolidated senior debt of Lamar Media and its restricted subsidiaries to EBITDA, as defined in the senior credit facility for the most recent four fiscal quarters then ended) of less than or equal to 3.25 to 1. Lamar Media is the borrower under the senior credit facility, except with respect to the $30,000 term loan A-2 facility for which Lamar Media’s wholly owned subsidiary, Lamar Advertising of Puerto Rico, Inc. is the borrower. We may also from time to time designate additional wholly owned subsidiaries as subsidiary borrowers under the incremental loan facility that can borrow up to $110,000 of the incremental 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.
	The remaining quarterly amortizations of the Term facilities as of December 31, 2013 is as follows:
			Term A-1			Term A-2			Term A-3		Term B
	March 31, 2014		$	6,750		$	750		$	625	$	57.5
	June 30, 2014 — December 31, 2014		$	13,500		$	1,500		$	625	$	57.4
	March 31, 2015		$	13,500		$	1,500		$	1,250	$	57.5
	June 30, 2015 — September 30, 2015		$	37,125		$	4,125		$	1,250	$	57.4
	December 31, 2015		$	74,250		$	8,250		$	1,250	$	57.4
	March 31, 2016 — September 30, 2016		$	—		$	—		$	1,250	$	57.4
	December 31, 2016		$	—		$	—		$	1,250	$	21,474.70
	March 31, 2017— June 30, 2017		$	—		$	—		$	21,250	$	—
	August 9, 2017		$	—		$	—		$	42,500	$	—
	In addition to the amortizations of our Term facilities, Lamar Media may be required to make certain mandatory prepayments on loans outstanding under the senior credit facility that would be applied first to any outstanding term loans, commencing with the year ended December 31, 2010. These payments, if any, are determined annually and are calculated based on a percentage of Consolidated Excess Cash Flow (as defined in the senior credit facility) at the end of each fiscal year. For fiscal years ending on or after December 31, 2012, the percentage of Consolidated Excess Cash Flow that must be applied is subject to a reduction to 0% if the total holdings debt ratio, as described above, is less than or equal to 5.00 to 1.00 as of the last day of such fiscal year. The Company will not be required to make a mandatory prepayment in respect of Consolidated Excess Cash Flow for the fiscal year ended December 31, 2013 since there was a consolidated cash flow deficit, in accordance with the calculation as defined in the senior credit facility and the total holdings debt ratio was less than 5.0 to 1.0.
	As of December 31, 2013, there were $150,000 revolving credit loans outstanding under the revolving senior credit facility. The revolving facility terminates April 28, 2015. Availability under the revolving facility is reduced by the amount of letters of credit outstanding. The Company had $6,973 letters of credit outstanding as of December 31, 2013 and $93,027 availability under its revolving facility. Revolving credit loans may be requested under the revolving credit facility at any time prior to maturity. The loans bear interest, at the Company’s option, at the LIBOR Rate or JPMorgan Chase Prime Rate plus applicable margins, such margins being set from time to time based on the Company’s ratio of debt to trailing twelve month EBITDA, as defined in the senior credit facility.
	The terms of Lamar Media’s senior credit facility and the indenture 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.
	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 specified financial ratios and levels including:
		•		fixed charges coverage ratio;
		•		senior debt ratio; and
		•		total holdings debt ratio.
	Lamar Advertising and Lamar Media were in compliance with all of the terms of all of the indentures and the applicable senior credit agreement 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, 2013 and 2012:
			2013			2012
	Senior Credit Agreement		$	502,106		$	384,664
	7 7/8% Senior Subordinated Notes			400,000			400,000
	5 7/8% Senior Subordinated Notes			500,000			500,000
	5% Senior Subordinated Notes			535,000			535,000
	9 3/4% Senior Notes			—			339,121
	Other notes with various rates and terms			1,696			2,069
				1,938,802			2,160,854
	Less current maturities			(55,935	)		(33,134	)
	Long-term debt excluding current maturities		$	1,882,867		$	2,127,720
	Long-term debt matures as follows:
	2014		$	55,935
	2015		$	335,698
	2016		$	27,142
	2017		$	85,000
	2018		$	400,000
	Later years		$	1,035,027

Asset_Retirement_Obligation

Asset Retirement Obligation	12 Months Ended
	Dec. 31, 2013
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, 2011	$	180,662
	Additions to asset retirement obligations		5,434
	Accretion expense		10,871
	Liabilities settled		(7,308	)
	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

Depreciation_and_Amortization

Depreciation and Amortization	12 Months Ended
	Dec. 31, 2013
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,
		2013		2012		2011
	Direct expenses	$	283,280	$	277,662	$	283,720
	General and administrative expenses		4,684		4,137		4,224
	Corporate expenses		12,615		14,284		11,695
		$	300,579	$	296,083	$	299,639

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Taxes	'
	(11) Income Taxes
	Income tax expense (benefit) consists of the following:
			Current			Deferred			Total
	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
	Year ended December 31, 2011:
	U.S. federal		$	—		$	1,883		$	1,883
	State and local			1,074			1,125			2,199
	Foreign			1,847			(387	)		1,460
			$	2,921		$	2,621		$	5,542
	As of December 31, 2013 and December 31, 2012, the Company had income taxes payable of $848 and $252, respectively, included in accrued expenses.
	The U.S. and foreign components of earnings before income taxes are as follows:
			2013			2012			2011
	U.S.		$	62,506		$	17,279		$	13,868
	Foreign			474			(1,147	)		(1,468	)
	Total		$	62,980		$	16,132		$	12,400
	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:
			2013			2012			2011
	Income tax expense at U.S. federal statutory rate		$	22,043		$	5,646		$	4,340
	State and local income taxes, net of federal income tax benefit			3,585			1,541			847
	Book expenses not deductible for tax purposes			1,351			1,058			746
	Stock-based compensation			65			270			464
	Undistributed earnings of Canadian subsidiaries (a)			—			—			(4,023	)
	Valuation allowance			(1,097	)		(331	)		382
	Rate change (b)			(2,565	)		49			1,743
	Other differences, net			(541	)		9			1,043
	Income tax expense		$	22,841		$	8,242		$	5,542
	(a)	For the period ended December 31, 2011, management asserted that the undistributed earnings of our Canadian subsidiaries were permanently reinvested and a deferred tax benefit of $4,023 was recognized from the release of the December 31, 2010 deferred tax liability. In periods prior to December 31, 2011, the undistributed earnings of our Canadian subsidiaries were not designated as permanently reinvested.
	(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.
		In 2012, Ontario Bill 114 was signed into law. The enacted legislation freezes the general corporate income tax rate at 11.5%, cancelling the previously enacted rate reductions for 2012 and 2013 to 11% and 10%, respectively. As a result, a non-cash charge of $49 to income tax expense was recorded for the increase of the Canadian net deferred tax liability.
		In 2011, the “Internal Revenue Code for a New Puerto Rico” was signed into law. Under the enacted legislation, the Puerto Rico corporate income tax rate was lowered from 39% to 30%. As a result, a non-cash charge of $1,743 to income tax expense was recorded for the reduction of the Puerto Rico 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:
			2013			2012
	Deferred tax assets:
	Allowance for doubtful accounts		$	2,972		$	2,964
	Accrued liabilities not deducted for tax purposes			37,764			35,580
	Asset retirement obligation			70,166			65,994
	Net operating loss carry forwards			138,865			163,597
	Tax credit carry forwards			4,844			3,765
	Charitable contributions carry forward			9			592
	Gross deferred tax assets			254,620			272,492
	Less: valuation allowance			(2,331	)		(3,424	)
	Net deferred tax assets			252,289			269,068
	Deferred tax liabilities:
	Property, plant and equipment			(45,160	)		(48,271	)
	Intangibles			(314,382	)		(308,266	)
	Investment in partnerships			(1,519	)		(1,244	)
	Gross deferred tax liabilities			(361,061	)		(357,781	)
	Net deferred tax liabilities		$	(108,772	)	$	(88,713	)
	Classification in the consolidated balance sheets:
	Current deferred tax assets		$	10,378		$	10,817
	Current deferred tax liabilities			—			—
	Noncurrent deferred tax assets			—			—
	Noncurrent deferred tax liabilities			(119,150	)		(99,530	)
	Net deferred tax liabilities		$	(108,772	)	$	(88,713	)
During 2013, we utilized $65,641 of U.S. net operating losses, leaving $305,172 of U.S. net operating loss carry forwards remaining at December 31, 2013 to offset future taxable income. Of this amount, $13,049 is subject to an IRC §382 limitation, but will be available to be fully utilized by no later than 2017. These carry forwards expire between 2020 through 2032. In addition, we have $4,443 of various credits available to offset future U.S. federal income tax.
As of December 31, 2013 we have approximately $430,191 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 $247 of various credits available to offset future state income tax. Management has determined that a valuation allowance related to state net operating loss carry forwards in certain jurisdictions is necessary. The valuation allowance for these deferred tax assets as of December 31, 2013 and December 31, 2012, was $2,323 and $3,410, respectively. The net change in the total valuation allowance for each of the years ended December 31, 2013, 2012, and 2011 was a (decrease) increase of $(1,087), $(332) and $410, respectively.
During 2013, we generated $3,285 of Puerto Rico net operating losses. As of December 31, 2013, we had approximately $28,523 of Puerto Rico net operating losses available to offset future taxable income. These carry forwards expire between 2016 and 2023. In addition, we have $154 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 and projected decreases in future depreciation and amortization, the Company will generate the minimum amount of future taxable income to support the realization of the deferred tax assets. Additionally, the Company has a significant amount of 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, 2013. 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 $7,583 for the undistributed earnings of our Canadian operations that arose in 2013 and prior years as management considers these earnings to be indefinitely invested outside the U.S. As of December 31, 2013, the undistributed earnings of these subsidiaries were approximately $21,665.
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, 2011		$	135
Additions for tax positions related to current year			3
Additions for tax positions related to prior years			—
Reductions for tax positions related to prior years			—
Lapse of statute of limitations			(63	)
Settlements			—
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
Included in the balance of unrecognized benefits at December 31, 2013 is $35 of tax benefits that, if recognized in future periods, would impact our effective tax rate.
During the years ended December 31, 2013 and December 31, 2012, we recognized interest and penalties of $1 and $3, respectively, as components of income tax expense in connection with our liabilities related to uncertain tax positions. Interest and penalties included in the balance at December 31, 2013 and December 31, 2012, was $4 and $14, respectively.
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.
Within the next twelve months, it is reasonably possible, that we could decrease our unrecognized tax benefits up to $35 as a result of the expiration of statute of limitations.
LAMAR MEDIA CORP [Member]	'
Income Taxes	'
	(6) Income Taxes
	Income tax expense (benefit) consists of the following:
			Current			Deferred			Total
	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
	Year ended December 31, 2011:
	U.S. federal		$	—		$	2,007		$	2,007
	State and local			1,075			1,295			2,370
	Foreign			1,847			(386	)		1,461
			$	2,922		$	2,916		$	5,838
	As of December 31, 2013 and December 31, 2012, the Company had income taxes payable of $630 and $0, respectively, included in accrued expenses.
	The U.S. and foreign components of earnings before income taxes are as follows:
			2013			2012			2011
	U.S.		$	62,841		$	17,615		$	14,226
	Foreign			474			(1,147	)		(1,468	)
	Total		$	63,315		$	16,468		$	12,758
	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:
			2013			2012			2011
	Income tax expense at U.S. federal statutory rate		$	22,160		$	5,764		$	4,465
	State and local income taxes, net of federal income tax benefit			3,601			1,557			865
	Book expenses not deductible for tax purposes			1,351			1,058			746
	Stock-based compensation			65			270			464
	Amortization of non-deductible goodwill			—			—			1
	Undistributed earnings of Canadian subsidiaries (a)			—			—			(4,023	)
	Valuation allowance			(1,094	)		(354	)		382
	Rate Change (b)			(2,565	)		49			1,743
	Other differences, net			(541	)		9			1,195
	Income tax expense		$	22,977		$	8,353		$	5,838
	(a)	In periods prior to December 31, 2011, the undistributed earnings of our Canadian subsidiaries were not designated as permanently reinvested. For the period ended December 31, 2011, management asserted that the undistributed earnings of our Canadian subsidiaries were permanently reinvested and a deferred tax benefit of $4,023 was recognized from the release of the December 31, 2010 deferred tax liability.
	(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.
	In 2012, Ontario Bill 114 was signed into law. The enacted legislation freezes the general corporate income tax rate at 11.5%, cancelling the previously enacted rate reductions for 2012 and 2013 to 11% and 10%, respectively. As a result, a non-cash charge of $49 to income tax expense was recorded for the increase of the Canadian net deferred tax liability.
	In 2011, the “Internal Revenue Code for a New Puerto Rico” was signed into law. Under the enacted legislation, the Puerto Rico corporate income tax rate was lowered from 39% to 30%. As a result, a non-cash charge of $1,743 to income tax expense was recorded for the reduction of the Puerto Rico 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:
			2013			2012
	Deferred tax assets:
	Allowance for doubtful accounts		$	2,972		$	2,964
	Accrued liabilities not deducted for tax purposes			37,764			35,580
	Asset retirement obligation			70,166			65,994
	Net operating loss carry forwards			89,496			114,361
	Tax credit carry forwards			19,615			18,537
	Charitable contributions carry forward			9			592
	Gross deferred tax assets			220,022			238,028
	Less: valuation allowance			(1,760	)		(2,851	)
	Net deferred tax assets			218,262			235,177
	Deferred tax liabilities:
	Property, plant and equipment			(45,160	)		(48,271	)
	Intangibles			(313,746	)		(307,630	)
	Investment in partnerships			(1,519	)		(1,244	)
	Gross deferred tax liabilities			(360,425	)		(357,145	)
	Net deferred tax liabilities		$	(142,163	)	$	(121,968	)
	Classification in the consolidated balance sheets:
	Current deferred tax assets		$	10,378		$	10,817
	Current deferred tax liabilities			—			—
	Noncurrent deferred tax assets			—			—
	Noncurrent deferred tax liabilities			(152,541	)		(132,785	)
Net deferred tax liabilities		$	(142,163	)	$	(121,968	)
During 2013, we utilized $65,976 of U.S. net operating losses, leaving $169,411 of U.S. net operating loss carry forwards remaining at December 31, 2013, to offset future taxable income. Of this amount, $13,049 is subject to an IRC §382 limitation, but will be available to be fully utilized by no later than 2017. These carry forwards expire between 2020 and 2032. In addition, we have $19,214 of various credits available to offset future U.S. federal income tax.
As of December 31, 2013, we have approximately $392,470 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 $247 of various credits available to offset future state income tax. Management has determined that a valuation allowance related to state net operating loss carry forwards is necessary. The valuation allowance for these deferred tax assets as of December 31, 2013 and December 31, 2012 was $1,751 and $2,836, respectively. The net change in the total valuation allowance for each of the years ended December 31, 2013, 2012, and 2011 was a (decrease) increase of $(1,085), $(356) and $407, respectively.
During 2013, we generated $3,285 of Puerto Rico net operating losses. As of December 31, 2013, we had approximately $28,523 of Puerto Rico net operating losses available to offset future taxable income. These carry forwards expire between 2016 and 2023. In addition, we have $154 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 and projected decreases in future depreciation and amortization, we will generate the minimum amount of future taxable income to support the realization of the deferred tax assets. Additionally, the company has a significant amount of 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, 2013. 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 $7,583 for the undistributed earnings of our Canadian operations that arose in 2013 and prior years as management considers these earnings to be indefinitely invested outside the U.S. As of December 31, 2013, the undistributed earnings of these subsidiaries were approximately $21,665.
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, 2011		$	135
Additions for tax positions related to current year			3
Additions for tax positions related to prior years			—
Reductions for tax positions related to prior years			—
Lapse of statute of limitations			(63	)
Settlements			—
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
Included in the balance of unrecognized benefits at December 31, 2013 is $35 of tax benefits that, if recognized in future periods, would impact our effective tax rate.
During the years ended December 31, 2013 and December 31, 2012, we recognized interest and penalties of $1 and $3, respectively, as components of income tax expense in connection with our liabilities related to uncertain tax positions. Interest and penalties included in the balance at December 31, 2013 and December 31, 2012, was $4 and $14, respectively.
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.
Within the next twelve months, it is reasonably possible, that we could decrease our unrecognized tax benefits up to $35 as a result of the expiration of statute of limitations.

Related_Party_Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2013
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, 2013 and 2012, 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, 2013, 2012 and 2011.
	In addition, the Company had receivables from employees of $126 and $57 at December 31, 2013 and 2012, 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 is a member and owns 26.66% interest. Joule provides services related to the Company’s installation of solar arrays in the State of Louisiana, which services are expected to be completed in 2012 and 2013. 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, 2013, the aggregate amount paid to Joule under the service contract was approximately $1,538. 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, 2013 and December 31, 2012, there was a payable to Lamar Advertising Company, its parent, in the amount of $7,665 and $8,356, respectively.
	Effective December 31, 2013 and December 31, 2012, Lamar Advertising Company contributed $37,858 and $26,839 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, 2013
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, 2013 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).

Stock_Compensation_Plans

Stock Compensation Plans	12 Months Ended
	Dec. 31, 2013
Disclosure Of Compensation Related Costs Sharebased 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 May 2013, the Incentive Plan was amended to increase the number of shares available by 2.5 million shares. 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, 2013, the Company recorded a liability, in accrued expenses, of $6,757 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 75% historical volatility of our Class A common stock and 25% 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 zero since the Company has historically not paid dividends on Class A common stock, except for special dividends in 2007.
	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
	2013		0	%		51	%		1	%		6
	2012		0	%		52	%		2	%		5
	2011		0	%		52	%		2	%		5
	Information regarding the 1996 Plan for the year ended December 31, 2013 is as follows:
		Shares			Weighted			Weighted
					Average			Average
					Exercise			Contractual
					Price			Life
	Outstanding, beginning of year		2,124,886		$	22.36
	Granted		1,807,000			42.31
	Exercised		(682,263	)		24.9
	Canceled		(17,200	)		38.73
	Outstanding, end of year		3,232,423		$	32.89			7.37
	Exercisable at end of year		1,737,823		$	25.16			5.95
	At December 31, 2013 there was $24,107 of unrecognized compensation cost related to stock options granted which is expected to be recognized over a weighted-average period of 2.00 years.
	Shares available for future stock option and restricted share grants to employees and directors under existing plans were 2,797,768 at December 31, 2013. The aggregate intrinsic value of options outstanding as of December 31, 2013 was $62,609, and the aggregate intrinsic value of options exercisable was $47,085. Total intrinsic value of options exercised was $15,362 for the year ended December 31, 2013.
	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 78,963 shares on January 1, 2013 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, 2013:
		Shares
	Available for future purchases, January 1, 2013		358,950
	Additional shares reserved under 2009 ESPP		78,963
	Purchases		(110,224	)
	Available for future purchases, December 31, 2013		327,689
	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 2013. 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 2013 results and were issued in the first quarter of 2014. 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, 2013, the Company has accrued $7,231 as compensation expense related to these agreements.

Benefit_Plans

Benefit Plans	12 Months Ended
	Dec. 31, 2013
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, 2013, the Company maintained $6,751 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 $3,581, $3,184 and $2,870 for the years ended December 31, 2013, 2012 and 2011, 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, 2013, 2012 and 2011, the Company contributed $1,323, $1,260 and $1,223, 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, 2013
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, 2013
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 the senior credit facility. As of December 31, 2013 and December 31, 2012, Lamar Media was permitted under the terms of its outstanding senior subordinated notes to make transfers to Lamar Advertising in the form of cash dividends, loans or advances in amounts up to $2,072,542 and $1,706,875, respectively. Transfers to Lamar Advertising are subject to additional restrictions if, under the senior credit facility and as defined therein, (x) the total holdings debt ratio is greater than 5.75 to 1 or (y) the senior debt ratio is greater than 3.25 to 1.0. As of December 31, 2013, the total holdings debt ratio was less than 5.75 to 1 and Lamar Media’s senior debt ratio was less than 3.25 to 1; therefore, transfers to Lamar Advertising were not subject to any additional restrictions under the senior credit facility.

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value of Financial Instruments	'
	(18) Fair Value of Financial Instruments
	At December 31, 2013 and 2012, 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 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 $1,948,040, which exceeded both the gross and carrying amount of $1,938,802 as of December 31, 2013.

Quarterly_Financial_Data_Unaud

Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Data (Unaudited)	'
	(19) Quarterly Financial Data (Unaudited)
	The tables below represent the “as adjusted” balances for the selected quarterly financial data of the Company for each reporting period in the years ended December 31, 2013 and 2012. See Note (1)(c) Adjustment to Previously Reported Amounts for further information.
		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
		Year 2012 Quarters
		March 31			June 30		September 30		December 31
	Net revenues	$	262,465		$	301,106	$	309,526	$	306,639
	Net revenues less direct advertising expenses	$	159,042		$	196,035	$	205,681	$	200,440
	Net (loss) income applicable to common stock	$	(25,209	)	$	11,534	$	13,381	$	7,819
	Net (loss) income per common share basic	$	(0.27	)	$	0.13	$	0.14	$	0.08
	Net (loss) income per common share — diluted	$	(0.27	)	$	0.13	$	0.14	$	0.08
	The tables below represent the “as previously reported” balances for the selected quarterly financial data of the Company for the quarters ended March 31, June 30 and September 30, 2013 and all reporting periods in the year ended December 31, 2012.
		Year 2013 Quarters
		March 31			June 30		September 30
	Net revenues	$	283,479		$	324,684	$	323,184
	Net revenues less direct advertising expenses	$	176,960		$	213,961	$	213,544
	Net (loss) income applicable to common stock	$	(6,161	)	$	21,164	$	18,249
	Net (loss) income per common share basic	$	(0.07	)	$	0.22	$	0.09
	Net (loss) income per common share — diluted	$	(0.07	)	$	0.22	$	0.09
		Year 2012 Quarters
		March 31			June 30		September 30		December 31
	Net revenues	$	266,238		$	304,872	$	306,286	$	305,505
	Net revenues less direct advertising expenses	$	162,815		$	199,801	$	202,441	$	199,306
	Net (loss) income applicable to common stock	$	(22,907	)	$	13,831	$	11,405	$	7,127
	Net (loss) income per common share basic	$	(0.25	)	$	0.15	$	0.12	$	0.08
	Net (loss) income per common share — diluted	$	(0.25	)	$	0.15	$	0.12	$	0.08
LAMAR MEDIA CORP [Member]	'
Quarterly Financial Data (Unaudited)	'
	(8) Quarterly Financial Data (Unaudited)
	The tables below represent the “as adjusted” balances for the selected quarterly financial data of the Company for each reporting period in the years ended December 31, 2013 and 2012. See Note (1)(c) Adjustment to Previously Reported Amounts for further information.
		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
		Year 2012 Quarters
		March 31			June 30		September 30		December 31
	Net revenues	$	262,465		$	301,106	$	309,526	$	306,639
	Net revenues less direct advertising expenses	$	159,042		$	196,035	$	205,681	$	200,440
	Net (loss) income	$	(25,127	)	$	11,695	$	13,561	$	7,986
	The tables below represent the “as previously reported” balances for the selected quarterly financial data of the Company for the quarters ended March 31, June 30 and September 30, 2013 and all reporting periods in the year ended December 31, 2012.
		Year 2013 Quarters
		March 31			June 30		September 30
	Net revenues	$	283,479		$	324,684	$	323,184
	Net revenues less direct advertising expenses	$	176,960		$	213,961	$	213,544
	Net (loss) income	$	(6,019	)	$	21,311	$	18,390
		Year 2012 Quarters
		March 31			June 30		September 30		December 31
	Net revenues	$	266,238		$	304,872	$	306,286	$	305,505
	Net revenues less direct advertising expenses	$	162,815		$	199,801	$	202,441	$	199,306
	Net (loss) income	$	(22,825	)	$	13,992	$	11,585	$	7,294

Subsequent_Events

Subsequent Events	12 Months Ended
	Dec. 31, 2013
Subsequent Events [Abstract]	'
Subsequent Events	'
	(20) Subsequent Events
	On January 10, 2014, the Company completed an institutional private placement of $510,000 aggregate principal amount of 5 3/8% Senior Notes due 2024 of Lamar Media. The institutional private placement resulted in net proceeds to Lamar Media of approximately $502,300. Lamar Media used the proceeds of this offering to repay in full all amounts then outstanding under its senior credit facility.
	On February 3, 2014, Lamar Media entered into a second restatement agreement with the Company, certain of Lamar Media’s subsidiaries as guarantors and the lenders named therein under which the parties agreed to amend and restate the existing senior credit facility for which JPMorgan Chase Bank, N.A. serves as administrative agent; the second amended and restated senior credit agreement was entered into on April 28, 2010, amended and restated on February 9, 2012 and amended and restated on February 3, 2014 (as amended and restated, the “senior credit facility”). Among other things, the amendments increased the revolving credit facility from $250,000 to $400,000 and extended its maturity date to February 2, 2019. The incremental facility was also increased from $300,000 to $500,000. In addition, the senior credit facility was amended to include 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, subject to certain restrictions. It also eliminated a requirement that Lamar Media make mandatory prepayments on loans in certain circumstances based on excess cash flow.

Schedule_II_Valuation_and_Qual

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2013
Schedule II - Valuation and Qualifying Accounts	'
	SCHEDULE 2
	Lamar Advertising Company
	And Subsidiaries
	Valuation and Qualifying Accounts
	Years Ended December 31, 2013, 2012 and 2011
	(In thousands)
		Balance at		Charged to		Deductions		Balance at
		Beginning		Costs and				End of
		of Period		Expenses				Period
	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
	Year ended December 31, 2011
	Deducted in balance sheet from trade accounts receivable:
	Allowance for doubtful accounts	$	8,100		7,591		8,191	$	7,500
	Deducted in balance sheet from intangible assets:
	Amortization of intangible assets	$	1,602,723		102,679		—	$	1,705,402
LAMAR MEDIA CORP [Member]	'
Schedule II - Valuation and Qualifying Accounts	'
	SCHEDULE 2
	Lamar Media Corp.
	and Subsidiaries
	Valuation and Qualifying Accounts
	Years Ended December 31, 2013, 2012 and 2011
	(In thousands)
		Balance at		Charged to		Deductions		Balance
		Beginning of		Costs and				at end
		Period		Expenses				of Period
	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
	Year Ended December 31, 2011
	Deducted in balance sheet from trade accounts receivable:
	Allowance for doubtful accounts	$	8,100		7,591		8,191	$	7,500
	Deducted in balance sheet from intangible assets:
	Amortization of intangible assets	$	1,601,843		102,649		—	$	1,704,492

Significant_Accounting_Policie1

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Nature of Business	'
	(a) Nature of Business
	Lamar Advertising Company (the Company) is engaged in the outdoor advertising business, operating over 145,000 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 22 states throughout the United States and the province of Ontario, Canada and operates over 38,000 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.
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 sell advertising on billboards, buses, shelters and benches and logo plates.
Adjustment to Previously Reported Amounts	'
	(c) Adjustment to Previously Reported Amounts
	Immaterial Correction of an Error. During the fourth quarter of 2013, the Company revised previously reported amounts due to a change from recognizing revenue on a monthly basis over the term of the advertising contract to recognizing revenue on a daily basis over the term of the advertising contract. In accordance with Staff Accounting Bulletin (“SAB”) No. 99, Materiality, and SAB No. 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements, management evaluated the materiality of the error from qualitative and quantitative perspectives, and concluded the error was immaterial to the current and prior periods. The correction of the immaterial error resulted in an increase to deferred income liability of $21,651 and $18,486 at December 31, 2012 and 2011, respectively, an increase of accumulated deficit of $13,208 and $11,277 and a reduction in net revenue and net income of $3,165 and $2,773 and $1,931 and $1,692, for the years ended December 31, 2012 and 2011, respectively. The correction also resulted in a decrease of $0.02 in earnings per basic and dilutive share for the years ended December 31, 2012 and 2011.
	Consequently, the Company revised its historical financial statements for fiscal 2012, fiscal 2011 herein, and will revise the quarters within fiscal 2013, when they are published in future filings. The Company recognized the cumulative effect of the error on periods prior to those that are presented herein by increasing deferred income liability and accumulated deficit by $15,713 and $9,585, respectively, as of December 31, 2010.
Property, Plant and Equipment	'
	(d) 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	'
	(e) 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 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, 2013 and 2012; 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	'
	(f) 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.
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 as services are provided 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, as services are provided. 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:
			2013		2012		2011
	Net revenues		$	7,862	$	6,798	$	7,153
	Direct advertising expenses		$	3,005	$	2,900	$	2,766
	General and administrative expenses		$	4,417	$	3,699	$	3,524
Income Taxes	'
	(i) Income Taxes
	The Company uses the asset and liability method of accounting for income taxes. Under the asset and liability method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.
Earnings Per Share	'
	(j) 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, 2013, December 31, 2012 and December 31, 2011, there were no dilutive shares excluded from the calculation.
Share Based Compensation	'
	(k) Share Based Compensation
	Compensation expense for share-based awards is recognized based on the grant date fair value of those awards. Share-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, 2013, 2012, and 2011 were $24,936, $14,466 and $11,650. The $24,936 expensed during the year ended December 31, 2013 consists of (i) $17,340 related to stock options, (ii) $7,231 related to stock grants, made under the Company’s performance-based stock incentive program in 2013 (iii) $365 related to stock awards to directors. See Note 14 for information on the assumptions we used to calculate the fair value of stock-based compensation.
Cash and Cash Equivalents	'
	(l) 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	'
	(m) 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 Consolidated Statement of Stockholders’ Equity.
Asset Retirement Obligations	'
	(n) Asset Retirement Obligations
	The Company is required to record the present 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	'
	(o) 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	'
	(p) 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.
Subsequent Events	'
	(q) Subsequent Events
	The Company has performed an evaluation of subsequent events through the date on which the 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 22 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, 2013
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:
		2013		2012		2011
	Net revenues	$	7,862	$	6,798	$	7,153
	Direct advertising expenses	$	3,005	$	2,900	$	2,766
	General and administrative expenses	$	4,417	$	3,699	$	3,524

Acquisitions_Tables

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2013
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	$	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
	The following is a summary of the preliminary allocation of the acquisition costs in the above transactions.
		Total
	Property, plant and equipment	$	74,326
	Goodwill		60,968
	Site locations		78,288
	Non-competition agreements		80
	Customer lists and contracts		18,148
	Other asset		7,763
	Current liabilities		(3,424	)
	Long-term liabilities		(6,140	)
		$	230,009
Summary of Unaudited Pro Forma Financial Information	'
	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
	Net revenues	$	1,255,376		$	1,225,958
	Net income applicable to common stock	$	40,725		$	12,098
	Net loss per common share — basic	$	0.43		$	0.13
	Net loss per common share — diluted	$	0.43		$	0.13
	The following unaudited pro forma financial information for the Company gives effect to the 2012 and 2011 acquisitions as if they had occurred on January 1, 2011. 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.
		2012			2011
	Net revenues	$	1,209,540		$	1,174,520
	Net income applicable to common stock	$	8,161		$	6,626
	Net loss per common share — basic	$	0.09		$	0.07
	Net loss per common share — diluted	$	0.09		$	0.07

Property_Plant_and_Equipment_T

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Property Plant And Equipment [Abstract]	'
Summary of Major Categories of Property, Plant and Equipment	'
	Major categories of property, plant and equipment at December 31, 2013 and 2012 are as follows:
		Estimated Life	2013		2012
		(Years)
	Land	—	$	312,883	$	317,223
	Building and improvements	10 — 39		125,724		115,646
	Advertising structures	5 — 15		2,459,313		2,378,940
	Automotive and other equipment	3 — 7		138,424		128,640
			$	3,036,344	$	2,940,449

Goodwill_and_Other_Intangible_1

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Summary of Intangible Assets	'
	The following is a summary of intangible assets at December 31, 2013 and December 31, 2012:
		Estimated			2013				2012
		Life
		(Years)			Gross Carrying		Accumulated		Gross Carrying		Accumulated
					Amount		Amortization		Amount		Amortization
	Amortizable Intangible Assets:
	Customer lists and contracts		7 — 10		$	492,299	$	463,188	$	482,883	$	455,549
	Non-competition agreements		3 — 15			63,933		62,914		63,519		62,566
	Site locations		15			1,495,635		1,106,947		1,449,181		1,009,631
	Other		5 — 15			14,008		13,441		13,608		13,133
					$	2,065,875	$	1,646,490	$	2,009,191	$	1,540,879
	Unamortizable Intangible Assets:
	Goodwill				$	1,757,089	$	253,536	$	1,738,686	$	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, 2013 are as follows:
	Balance as of December 31, 2012	$	1,738,686
	Goodwill acquired during the year		18,631
	Purchase price adjustments and other		(228	)
	Impairment losses		—
	Balance as of December 31, 2013	$	1,757,089
Summary of Estimated Amortization Expense	'
	The following is a summary of the estimated amortization expense for future years:
	2014	$	94,763
	2015		58,713
	2016		48,503
	2017		43,255
	2018		38,542
	Thereafter		135,609
	Total	$	419,385
LAMAR MEDIA CORP [Member]	'
Summary of Intangible Assets	'
	The following is a summary of intangible assets at December 31, 2013 and December 31, 2012:
		Estimated			2013				2012
		Life
		(Years)			Gross Carrying		Accumulated		Gross Carrying		Accumulated
					Amount		Amortization		Amount		Amortization
	Amortizable Intangible Assets:
	Customer lists and contracts		7—10		$	492,299	$	463,188	$	482,883	$	455,549
	Non-competition agreement		3—15			63,933		62,914		63,519		62,566
	Site locations		15			1,495,635		1,106,945		1,449,181		1,009,631
	Other		5—15			13,463		13,364		13,063		13,063
					$	2,065,330	$	1,646,411	$	2,008,646	$	1,540,809
	Unamortizable Intangible Assets:
	Goodwill				$	1,746,068	$	252,667	$	1,727,665	$	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, 2013 are as follows:
	Balance as of December 31, 2012	$	1,727,665
	Goodwill acquired during the year		18,631
	Purchase price adjustments and other		(228	)
	Impairment losses		—
	Balance as of December 31, 2013	$	1,746,068

Leases_Tables

Leases (Tables)	12 Months Ended
	Dec. 31, 2013
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, 2013:
	2014	$	155,374
	2015	$	125,503
	2016	$	109,737
	2017	$	94,932
	2018	$	80,956
	Thereafter	$	595,410

Accrued_Expenses_Tables

Accrued Expenses (Tables)	12 Months Ended
	Dec. 31, 2013
Summary of Accrued Expenses	'
	The following is a summary of accrued expenses at December 31, 2013 and 2012:
		2013		2012
	Payroll	$	11,311	$	12,854
	Interest		23,451		31,888
	Insurance benefits		13,090		12,537
	Accrued lease expense		37,346		32,100
	Other		13,726		10,082
		$	98,924	$	99,461
LAMAR MEDIA CORP [Member]	'
Summary of Accrued Expenses	'
	The following is a summary of accrued expenses at December 31, 2013 and 2012:
		2013		2012
	Payroll	$	11,311	$	12,854
	Interest		23,451		31,888
	Other		60,870		52,118
		$	95,632	$	96,860

Longterm_Debt_Tables

Long-term Debt (Tables)	12 Months Ended
	Dec. 31, 2013
Long-Term Debt	'
	Long-term debt consists of the following at December 31, 2013 and 2012:
		2013			2012
	Senior Credit Agreement	$	502,106		$	384,664
	7 7/8% Senior Subordinated Notes		400,000			400,000
	5 7/8% Senior Subordinated Notes		500,000			500,000
	5% Senior Subordinated Notes		535,000			535,000
	9 3/4% Senior Notes		—			339,121
	Other notes with various rates and terms		1,696			2,069
			1,938,802			2,160,854
	Less current maturities		(55,935	)		(33,134	)
	Long-term debt excluding current maturities	$	1,882,867		$	2,127,720
Summary of Long-Term Debt Matures	'
	Long-term debt matures as follows:
	2014	$	55,935
	2015	$	335,698
	2016	$	27,142
	2017	$	85,000
	2018	$	400,000
	Later years	$	1,035,027
Remaining Quarterly Amortizations of Term Loan Facilities	'
	The remaining quarterly amortizations of the Term facilities as of December 31, 2013 is as follows:
		Term A-1			Term A-2			Term A-3		Term B
	March 31, 2014	$	6,750		$	750		$	625	$	57.5
	June 30, 2014 — December 31, 2014	$	13,500		$	1,500		$	625	$	57.4
	March 31, 2015	$	13,500		$	1,500		$	1,250	$	57.5
	June 30, 2015 — September 30, 2015	$	37,125		$	4,125		$	1,250	$	57.4
	December 31, 2015	$	74,250		$	8,250		$	1,250	$	57.4
	March 31, 2016 — September 30, 2016	$	—		$	—		$	1,250	$	57.4
	December 31, 2016	$	—		$	—		$	1,250	$	21,474.70
	March 31, 2017— June 30, 2017	$	—		$	—		$	21,250	$	—
	August 9, 2017	$	—		$	—		$	42,500	$	—
LAMAR MEDIA CORP [Member]	'
Long-Term Debt	'
	Long-term debt consists of the following at December 31, 2013 and 2012:
		2013			2012
	Senior Credit Agreement	$	502,106		$	384,664
	7 7/8% Senior Subordinated Notes		400,000			400,000
	5 7/8% Senior Subordinated Notes		500,000			500,000
	5% Senior Subordinated Notes		535,000			535,000
	9 3/4% Senior Notes		—			339,121
	Other notes with various rates and terms		1,696			2,069
			1,938,802			2,160,854
	Less current maturities		(55,935	)		(33,134	)
	Long-term debt excluding current maturities	$	1,882,867		$	2,127,720
Summary of Long-Term Debt Matures	'
	Long-term debt matures as follows:
	2014	$	55,935
	2015	$	335,698
	2016	$	27,142
	2017	$	85,000
	2018	$	400,000
	Later years	$	1,035,027

Asset_Retirement_Obligation_Ta

Asset Retirement Obligation (Tables)	12 Months Ended
	Dec. 31, 2013
Asset Retirement Obligation Disclosure [Abstract]	'
Information Related to Asset Retirement Obligation	'
	The following table reflects information related to our asset retirement obligations:
	Balance at December 31, 2011	$	180,662
	Additions to asset retirement obligations		5,434
	Accretion expense		10,871
	Liabilities settled		(7,308	)
	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

Depreciation_and_Amortization_

Depreciation and Amortization (Tables)	12 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Depreciation and Amortization Expense Excluded from Operating Expenses	'
	The amounts of depreciation and amortization expense excluded from the following operating expenses in its Statements of Operations are:
		Year Ended December 31,
		2013		2012		2011
	Direct expenses	$	283,280	$	277,662	$	283,720
	General and administrative expenses		4,684		4,137		4,224
	Corporate expenses		12,615		14,284		11,695
		$	300,579	$	296,083	$	299,639

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Expense (Benefit)	'
	Income tax expense (benefit) consists of the following:
			Current			Deferred			Total
	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
	Year ended December 31, 2011:
	U.S. federal		$	—		$	1,883		$	1,883
	State and local			1,074			1,125			2,199
	Foreign			1,847			(387	)		1,460
			$	2,921		$	2,621		$	5,542
U.S. and Foreign Components of Earnings Before Income Taxes	'
	The U.S. and foreign components of earnings before income taxes are as follows:
			2013			2012			2011
	U.S.		$	62,506		$	17,279		$	13,868
	Foreign			474			(1,147	)		(1,468	)
	Total		$	62,980		$	16,132		$	12,400
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:
			2013			2012			2011
	Income tax expense at U.S. federal statutory rate		$	22,043		$	5,646		$	4,340
	State and local income taxes, net of federal income tax benefit			3,585			1,541			847
	Book expenses not deductible for tax purposes			1,351			1,058			746
	Stock-based compensation			65			270			464
	Undistributed earnings of Canadian subsidiaries (a)			—			—			(4,023	)
	Valuation allowance			(1,097	)		(331	)		382
	Rate change (b)			(2,565	)		49			1,743
	Other differences, net			(541	)		9			1,043
	Income tax expense		$	22,841		$	8,242		$	5,542
	(a)	For the period ended December 31, 2011, management asserted that the undistributed earnings of our Canadian subsidiaries were permanently reinvested and a deferred tax benefit of $4,023 was recognized from the release of the December 31, 2010 deferred tax liability. In periods prior to December 31, 2011, the undistributed earnings of our Canadian subsidiaries were not designated as permanently reinvested.
	(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:
			2013			2012
	Deferred tax assets:
	Allowance for doubtful accounts		$	2,972		$	2,964
	Accrued liabilities not deducted for tax purposes			37,764			35,580
	Asset retirement obligation			70,166			65,994
	Net operating loss carry forwards			138,865			163,597
	Tax credit carry forwards			4,844			3,765
	Charitable contributions carry forward			9			592
	Gross deferred tax assets			254,620			272,492
	Less: valuation allowance			(2,331	)		(3,424	)
	Net deferred tax assets			252,289			269,068
	Deferred tax liabilities:
	Property, plant and equipment			(45,160	)		(48,271	)
	Intangibles			(314,382	)		(308,266	)
	Investment in partnerships			(1,519	)		(1,244	)
	Gross deferred tax liabilities			(361,061	)		(357,781	)
	Net deferred tax liabilities		$	(108,772	)	$	(88,713	)
	Classification in the consolidated balance sheets:
	Current deferred tax assets		$	10,378		$	10,817
	Current deferred tax liabilities			—			—
	Noncurrent deferred tax assets			—			—
	Noncurrent deferred tax liabilities			(119,150	)		(99,530	)
	Net deferred tax liabilities		$	(108,772	)	$	(88,713	)
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, 2011		$	135
	Additions for tax positions related to current year			3
	Additions for tax positions related to prior years			—
	Reductions for tax positions related to prior years			—
	Lapse of statute of limitations			(63	)
	Settlements			—
	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
LAMAR MEDIA CORP [Member]	'
Income Tax Expense (Benefit)	'
	Income tax expense (benefit) consists of the following:
			Current			Deferred			Total
	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
	Year ended December 31, 2011:
	U.S. federal		$	—		$	2,007		$	2,007
	State and local			1,075			1,295			2,370
	Foreign			1,847			(386	)		1,461
			$	2,922		$	2,916		$	5,838
U.S. and Foreign Components of Earnings Before Income Taxes	'
	The U.S. and foreign components of earnings before income taxes are as follows:
			2013			2012			2011
	U.S.		$	62,841		$	17,615		$	14,226
	Foreign			474			(1,147	)		(1,468	)
	Total		$	63,315		$	16,468		$	12,758
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:
			2013			2012			2011
	Income tax expense at U.S. federal statutory rate		$	22,160		$	5,764		$	4,465
	State and local income taxes, net of federal income tax benefit			3,601			1,557			865
	Book expenses not deductible for tax purposes			1,351			1,058			746
	Stock-based compensation			65			270			464
	Amortization of non-deductible goodwill			—			—			1
	Undistributed earnings of Canadian subsidiaries (a)			—			—			(4,023	)
	Valuation allowance			(1,094	)		(354	)		382
	Rate Change (b)			(2,565	)		49			1,743
	Other differences, net			(541	)		9			1,195
	Income tax expense		$	22,977		$	8,353		$	5,838
	(a)	In periods prior to December 31, 2011, the undistributed earnings of our Canadian subsidiaries were not designated as permanently reinvested. For the period ended December 31, 2011, management asserted that the undistributed earnings of our Canadian subsidiaries were permanently reinvested and a deferred tax benefit of $4,023 was recognized from the release of the December 31, 2010 deferred tax liability.
	(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.
	In 2012, Ontario Bill 114 was signed into law. The enacted legislation freezes the general corporate income tax rate at 11.5%, cancelling the previously enacted rate reductions for 2012 and 2013 to 11% and 10%, respectively. As a result, a non-cash charge of $49 to income tax expense was recorded for the increase of the Canadian net deferred tax liability.
	In 2011, the “Internal Revenue Code for a New Puerto Rico” was signed into law. Under the enacted legislation, the Puerto Rico corporate income tax rate was lowered from 39% to 30%. As a result, a non-cash charge of $1,743 to income tax expense was recorded for the reduction of the Puerto Rico 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:
			2013			2012
	Deferred tax assets:
	Allowance for doubtful accounts		$	2,972		$	2,964
	Accrued liabilities not deducted for tax purposes			37,764			35,580
	Asset retirement obligation			70,166			65,994
	Net operating loss carry forwards			89,496			114,361
	Tax credit carry forwards			19,615			18,537
	Charitable contributions carry forward			9			592
	Gross deferred tax assets			220,022			238,028
	Less: valuation allowance			(1,760	)		(2,851	)
	Net deferred tax assets			218,262			235,177
	Deferred tax liabilities:
	Property, plant and equipment			(45,160	)		(48,271	)
	Intangibles			(313,746	)		(307,630	)
	Investment in partnerships			(1,519	)		(1,244	)
	Gross deferred tax liabilities			(360,425	)		(357,145	)
	Net deferred tax liabilities		$	(142,163	)	$	(121,968	)
	Classification in the consolidated balance sheets:
	Current deferred tax assets		$	10,378		$	10,817
	Current deferred tax liabilities			—			—
	Noncurrent deferred tax assets			—			—
	Noncurrent deferred tax liabilities			(152,541	)		(132,785	)
	Net deferred tax liabilities		$	(142,163	)	$	(121,968	)
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, 2011		$	135
	Additions for tax positions related to current year			3
	Additions for tax positions related to prior years			—
	Reductions for tax positions related to prior years			—
	Lapse of statute of limitations			(63	)
	Settlements			—
	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

Stock_Compensation_Plans_Table

Stock Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2013
Disclosure Of Compensation Related Costs Sharebased 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
	2013		0	%		51	%		1	%		6
	2012		0	%		52	%		2	%		5
	2011		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, 2013 is as follows:
		Shares			Weighted			Weighted
					Average			Average
					Exercise			Contractual
					Price			Life
	Outstanding, beginning of year		2,124,886		$	22.36
	Granted		1,807,000			42.31
	Exercised		(682,263	)		24.9
	Canceled		(17,200	)		38.73
	Outstanding, end of year		3,232,423		$	32.89			7.37
	Exercisable at end of year		1,737,823		$	25.16			5.95
Summary of ESPP Share Activity	'
	The following is a summary of 2009 ESPP share activity for the year ended December 31, 2013:
		Shares
	Available for future purchases, January 1, 2013		358,950
	Additional shares reserved under 2009 ESPP		78,963
	Purchases		(110,224	)
	Available for future purchases, December 31, 2013		327,689

Quarterly_Financial_Data_Unaud1

Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2013
Summary of Quarterly Financial Data	'
	The tables below represent the “as adjusted” balances for the selected quarterly financial data of the Company for each reporting period in the years ended December 31, 2013 and 2012. See Note (1)(c) Adjustment to Previously Reported Amounts for further information.
		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
		Year 2012 Quarters
		March 31			June 30		September 30		December 31
	Net revenues	$	262,465		$	301,106	$	309,526	$	306,639
	Net revenues less direct advertising expenses	$	159,042		$	196,035	$	205,681	$	200,440
	Net (loss) income applicable to common stock	$	(25,209	)	$	11,534	$	13,381	$	7,819
	Net (loss) income per common share basic	$	(0.27	)	$	0.13	$	0.14	$	0.08
	Net (loss) income per common share — diluted	$	(0.27	)	$	0.13	$	0.14	$	0.08
	The tables below represent the “as previously reported” balances for the selected quarterly financial data of the Company for the quarters ended March 31, June 30 and September 30, 2013 and all reporting periods in the year ended December 31, 2012.
		Year 2013 Quarters
		March 31			June 30		September 30
	Net revenues	$	283,479		$	324,684	$	323,184
	Net revenues less direct advertising expenses	$	176,960		$	213,961	$	213,544
	Net (loss) income applicable to common stock	$	(6,161	)	$	21,164	$	18,249
	Net (loss) income per common share basic	$	(0.07	)	$	0.22	$	0.09
	Net (loss) income per common share — diluted	$	(0.07	)	$	0.22	$	0.09
		Year 2012 Quarters
		March 31			June 30		September 30		December 31
	Net revenues	$	266,238		$	304,872	$	306,286	$	305,505
	Net revenues less direct advertising expenses	$	162,815		$	199,801	$	202,441	$	199,306
	Net (loss) income applicable to common stock	$	(22,907	)	$	13,831	$	11,405	$	7,127
	Net (loss) income per common share basic	$	(0.25	)	$	0.15	$	0.12	$	0.08
	Net (loss) income per common share — diluted	$	(0.25	)	$	0.15	$	0.12	$	0.08
LAMAR MEDIA CORP [Member]	'
Summary of Quarterly Financial Data	'
	The tables below represent the “as adjusted” balances for the selected quarterly financial data of the Company for each reporting period in the years ended December 31, 2013 and 2012. See Note (1)(c) Adjustment to Previously Reported Amounts for further information.
		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
		Year 2012 Quarters
		March 31			June 30		September 30		December 31
	Net revenues	$	262,465		$	301,106	$	309,526	$	306,639
	Net revenues less direct advertising expenses	$	159,042		$	196,035	$	205,681	$	200,440
	Net (loss) income	$	(25,127	)	$	11,695	$	13,561	$	7,986
	The tables below represent the “as previously reported” balances for the selected quarterly financial data of the Company for the quarters ended March 31, June 30 and September 30, 2013 and all reporting periods in the year ended December 31, 2012.
		Year 2013 Quarters
		March 31			June 30		September 30
	Net revenues	$	283,479		$	324,684	$	323,184
	Net revenues less direct advertising expenses	$	176,960		$	213,961	$	213,544
	Net (loss) income	$	(6,019	)	$	21,311	$	18,390
		Year 2012 Quarters
		March 31			June 30		September 30		December 31
	Net revenues	$	266,238		$	304,872	$	306,286	$	305,505
	Net revenues less direct advertising expenses	$	162,815		$	199,801	$	202,441	$	199,306
	Net (loss) income	$	(22,825	)	$	13,992	$	11,585	$	7,294

Significant_Accounting_Policie3

Significant Accounting Policies - Additional Information (Detail) (USD $)

12 Months Ended

In Thousands, except Share data, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2010

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Billboard

LAMAR MEDIA CORP [Member]

LAMAR MEDIA CORP [Member]

LAMAR MEDIA CORP [Member]

Accumulated Deficit [Member]

Accumulated Deficit [Member]

Accumulated Deficit [Member]

Deferred Income Liability [Member]

Current Deferred Income Liabilities [Member]

Current Deferred Income Liabilities [Member]

Total Revenue [Member]

Total Revenue [Member]

Net Income [Member]

Net Income [Member]

Stock options [Member]

Performance-based stock incentive program [Member]

Stock awards to directors [Member]

Minimum [Member]

Maximum [Member]

State

Billboard

Transit

State

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of advertising displays

145,000

'

'

145,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of states in which the company operates

44

'

'

44

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of states in which the company operates logo sign business

22

'

'

22

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of transit advertising displays

38,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of states in which the company operates

16

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Immaterial amount being corrected

'

'

'

'

'

'

$13,208

$11,227

$9,585

$15,713

$21,651

$18,486

$3,165

$2,773

$1,931

$1,692

'

'

'

'

'

Decrease in earnings per basic and diluted shares

'

$0.02

$0.02

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated useful lives of Intangible assets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'3 years

'15 years

Dilutive shares

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non cash compensation expense

$24,936

$14,466

$11,650

$24,936

$14,466

$11,650

'

'

'

'

'

'

'

'

'

'

$17,340

$7,231

$365

'

'

Investment maturity period

'Three months or less

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounting Policies [Abstract]	'	'	'
Net revenues	$7,862	$6,798	$7,153
Direct advertising expenses	3,005	2,900	2,766
General and administrative expenses	$4,417	$3,699	$3,524

Acquisitions_Additional_Inform

Acquisitions - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition [Line Items]	'	'
Total purchase price of outdoor advertising assets	$97,230	$230,009
Total purchase price of outdoor advertising assets paid in cash	92,248	206,068
Non cash consideration of outdoor advertising assets	4,982	23,941
Gain on exchange of outdoor advertising assets	67	9,805
Total acquired intangible assets	79,784	157,484
Portion of acquired intangible assets assigned to goodwill	18,631	60,968
Amount deductible for tax purposes	18,582	23,937
Aggregate amortization expense related to acquisition	2,158	679
Other [Member]	'	'
Business Acquisition [Line Items]	'	'
Weighted average useful life	'14 years	'14 years
Total acquired intangible assets	61,153	96,516
Customer lists and contracts [Member]	'	'
Business Acquisition [Line Items]	'	'
Total acquired intangible assets	10,390	18,148
Weighted average useful life	'7 years	'7 years
Site locations [Member]	'	'
Business Acquisition [Line Items]	'	'
Total acquired intangible assets	$50,333	$78,288
Weighted average useful life	'15 years	'15 years

Acquisitions_Summary_of_Prelim

Acquisitions - Summary of Preliminary Allocation of Acquisition Costs (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition [Line Items]	'	'
Property, plant and equipment	$18,196	$74,326
Goodwill	18,631	60,968
Other asset	1,408	7,763
Current liabilities	-2,158	-3,424
Long-term liabilities	'	-6,140
Total	97,230	230,009
Site locations [Member]	'	'
Business Acquisition [Line Items]	'	'
Finite lived intangible assets	50,333	78,288
Non-competition agreements [Member]	'	'
Business Acquisition [Line Items]	'	'
Finite lived intangible assets	430	80
Customer lists and contracts [Member]	'	'
Business Acquisition [Line Items]	'	'
Finite lived intangible assets	$10,390	$18,148

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, 2013	Dec. 31, 2012	Dec. 31, 2011
Business Combinations [Abstract]	'	'	'
Net revenues	$1,255,376	$1,225,958	$1,174,520
Net income (loss) applicable to common stock	$40,725	$12,098	$6,626
Net loss per common share - basic	$0.43	$0.13	$0.07
Net loss per common share - diluted	$0.43	$0.13	$0.07

Noncash_Financing_and_Investin1

Non-cash Financing and Investing Activities - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Disclosure Of Non Cash Investing And Financing Information [Line Items]	'	'	'
Non-cash acquisition of outdoor advertising assets	$4,982	$23,941	'
Non-cash investing activity	'	'	4,000
Payments for deposits	'	'	1,900
Total purchase price	'	'	11,539
LAMAR MEDIA CORP [Member]	'	'	'
Supplemental Disclosure Of Non Cash Investing And Financing Information [Line Items]	'	'	'
Non-cash acquisition of outdoor advertising assets	4,982	23,941	'
Non-cash investing activity	0	0	4,000
Payments for deposits	'	'	1,900
Total purchase price	'	'	$11,539

Property_Plant_and_Equipment_S

Property, Plant and Equipment - Summary of Major Categories of Property, Plant and Equipment (Detail) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

In Thousands, unless otherwise specified

Land [Member]

Land [Member]

Land [Member]

Land [Member]

Building and improvements [Member]

Building and improvements [Member]

Building and improvements [Member]

Building and improvements [Member]

Advertising structures [Member]

Advertising structures [Member]

Advertising structures [Member]

Advertising structures [Member]

Automotive and other equipment [Member]

Automotive and other equipment [Member]

Automotive and other equipment [Member]

Automotive and other equipment [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Property, Plant and Equipment [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property plant and equipment, Estimated life

'

'

'

'

'

'

'

'

'10 years

'39 years

'

'

'5 years

'15 years

'

'

'3 years

'7 years

Property, plant and equipment

$3,036,456

$2,940,449

$312,883

$317,223

'

'

$125,724

$115,646

'

'

$2,459,313

$2,378,940

'

'

$138,424

$128,640

'

'

Goodwill_and_Other_Intangible_2

Goodwill and Other Intangible Assets - Summary of Intangible Assets (Detail) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

In Thousands, unless otherwise specified

LAMAR MEDIA CORP [Member]

LAMAR MEDIA CORP [Member]

Minimum [Member]

Maximum [Member]

Customer lists and contracts [Member]

Customer lists and contracts [Member]

Customer lists and contracts [Member]

Customer lists and contracts [Member]

Customer lists and contracts [Member]

Customer lists and contracts [Member]

Customer lists and contracts [Member]

Customer lists and contracts [Member]

Non-competition agreements [Member]

Non-competition agreements [Member]

Non-competition agreements [Member]

Non-competition agreements [Member]

Non-competition agreements [Member]

Non-competition agreements [Member]

Non-competition agreements [Member]

Non-competition agreements [Member]

Site locations [Member]

Site locations [Member]

Site locations [Member]

Site locations [Member]

Site locations [Member]

Site locations [Member]

Other [Member]

Other [Member]

Other [Member]

Other [Member]

Other [Member]

Other [Member]

Other [Member]

Other [Member]

LAMAR MEDIA CORP [Member]

LAMAR MEDIA CORP [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

LAMAR MEDIA CORP [Member]

LAMAR MEDIA CORP [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

LAMAR MEDIA CORP [Member]

LAMAR MEDIA CORP [Member]

Maximum [Member]

Maximum [Member]

LAMAR MEDIA CORP [Member]

LAMAR MEDIA CORP [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

LAMAR MEDIA CORP [Member]

LAMAR MEDIA CORP [Member]

LAMAR MEDIA CORP [Member]

LAMAR MEDIA CORP [Member]

LAMAR MEDIA CORP [Member]

LAMAR MEDIA CORP [Member]

LAMAR MEDIA CORP [Member]

Finite-Lived Intangible Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated Life (Years)

'

'

'

'

'3 years

'15 years

'

'

'

'

'7 years

'7 years

'10 years

'10 years

'

'

'

'

'3 years

'3 years

'15 years

'15 years

'

'

'

'

'15 years

'15 years

'

'

'

'

'5 years

'5 years

'15 years

'15 years

Gross Carrying Amount

$2,065,875

$2,009,191

$2,065,330

$2,008,646

'

'

$492,299

$482,883

$492,299

$482,883

'

'

'

'

$63,933

$63,519

$63,933

$63,519

'

'

'

'

$1,495,635

$1,449,181

$1,495,635

$1,449,181

'

'

$14,008

$13,608

$13,463

$13,063

'

'

'

'

Accumulated Amortization

1,646,490

1,540,879

1,646,411

1,540,809

'

'

463,188

455,549

463,188

455,549

'

'

'

'

62,914

62,566

62,914

62,566

'

'

'

'

1,106,947

1,009,631

1,106,945

1,009,631

'

'

13,441

13,133

13,364

13,063

'

'

'

'

Goodwill gross carrying amount

1,757,089

1,738,686

1,746,068

1,727,665

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill accumulated amortization

$253,536

$253,536

$252,667

$252,667

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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, 2013
Goodwill [Line Items]	'
Goodwill, beginning balance	$1,738,686
Goodwill acquired during the year	18,631
Purchase price adjustments and other	-228
Impairment losses	'
Goodwill, Ending balance	1,757,089
LAMAR MEDIA CORP [Member]	'
Goodwill [Line Items]	'
Goodwill, beginning balance	1,727,665
Goodwill acquired during the year	18,631
Purchase price adjustments and other	-228
Impairment losses	'
Goodwill, Ending balance	$1,746,068

Goodwill_and_Other_Intangible_4

Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill And Intangible Assets Disclosure [Abstract]	'	'	'
Amortization expense	$106,533	$102,941	$102,918

Goodwill_and_Other_Intangible_5

Goodwill and Other Intangible Assets - Summary of Estimated Amortization Expense (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Goodwill And Intangible Assets Disclosure [Abstract]	'	'
2014	$94,763	'
2015	58,713	'
2016	48,503	'
2017	43,255	'
2018	38,542	'
Thereafter	135,609	'
Total	$419,385	$468,312

Leases_Summary_of_Minimum_Annu

Leases - Summary of Minimum Annual Rental Payments (Detail) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Leases [Abstract]	'
2014	$155,374
2015	125,503
2016	109,737
2017	94,932
2018	80,956
Thereafter	$595,410

Leases_Additional_Information_

Leases - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Leases [Abstract]	'	'	'
Rental expense related to company's operating lease	$222,638	$209,110	$205,378

Accrued_Expenses_Summary_of_Ac

Accrued Expenses - Summary of Accrued Expenses (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accounts Payable And Accrued Liabilities Current [Line Items]	'	'
Payroll	$11,311	$12,854
Interest	23,451	31,888
Insurance benefits	13,090	12,537
Accrued lease expense	37,346	32,100
Other	13,726	10,082
Total	98,924	99,461
LAMAR MEDIA CORP [Member]	'	'
Accounts Payable And Accrued Liabilities Current [Line Items]	'	'
Payroll	11,311	12,854
Interest	23,451	31,888
Other	60,870	52,118
Total	$95,632	$96,860

Longterm_Debt_LongTerm_Debt_De

Long-term Debt - Long-Term Debt (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'
Long Term Debt	$1,938,802	$2,160,854
Less current maturities	-55,935	-33,134
Long-term debt excluding current maturities	1,882,867	2,127,720
LAMAR MEDIA CORP [Member]	'	'
Debt Instrument [Line Items]	'	'
Long Term Debt	1,938,802	2,160,854
Less current maturities	-55,935	-33,134
Long-term debt excluding current maturities	1,882,867	2,127,720
Senior Credit Facility [Member]	'	'
Debt Instrument [Line Items]	'	'
Long Term Debt	502,106	384,664
Senior Credit Facility [Member] | LAMAR MEDIA CORP [Member]	'	'
Debt Instrument [Line Items]	'	'
Long Term Debt	502,106	384,664
7 7/8% Senior Subordinated Notes [Member]	'	'
Debt Instrument [Line Items]	'	'
Long Term Debt	400,000	400,000
7 7/8% Senior Subordinated Notes [Member] | LAMAR MEDIA CORP [Member]	'	'
Debt Instrument [Line Items]	'	'
Long Term Debt	400,000	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
9 3/4% Senior Notes [Member]	'	'
Debt Instrument [Line Items]	'	'
Long Term Debt	'	339,121
9 3/4% Senior Notes [Member] | LAMAR MEDIA CORP [Member]	'	'
Debt Instrument [Line Items]	'	'
Long Term Debt	'	339,121
Other notes with various rates and terms [Member]	'	'
Debt Instrument [Line Items]	'	'
Long Term Debt	1,696	2,069
Other notes with various rates and terms [Member] | LAMAR MEDIA CORP [Member]	'	'
Debt Instrument [Line Items]	'	'
Long Term Debt	$1,696	$2,069

Longterm_Debt_LongTerm_Debt_Pa

Long-term Debt - Long-Term Debt (Parenthetical) (Detail)

Dec. 31, 2013

Apr. 22, 2010

Dec. 31, 2013

Feb. 09, 2012

Dec. 31, 2013

Oct. 30, 2012

Dec. 31, 2012

Mar. 27, 2009

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

7 7/8% Senior Subordinated Notes [Member]

7 7/8% Senior Subordinated Notes [Member]

5 7/8% Senior Subordinated Notes [Member]

5 7/8% Senior Subordinated Notes [Member]

5% Senior Subordinated Notes [Member]

5% Senior Subordinated Notes [Member]

9 3/4% Senior Notes [Member]

9 3/4% Senior Notes [Member]

LAMAR MEDIA CORP [Member]

LAMAR MEDIA CORP [Member]

LAMAR MEDIA CORP [Member]

LAMAR MEDIA CORP [Member]

7 7/8% Senior Subordinated Notes [Member]

5 7/8% Senior Subordinated Notes [Member]

5% Senior Subordinated Notes [Member]

9 3/4% Senior Notes [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate on senior notes

7.88%

7.88%

5.88%

5.88%

5.00%

5.00%

9.75%

9.75%

7.88%

5.88%

5.00%

9.75%

Longterm_Debt_Summary_of_LongT

Long-term Debt - Summary of Long-Term Debt Matures (Detail) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'
2014	$55,935
2015	335,698
2016	27,142
2017	85,000
2018	400,000
Later years	1,035,027
LAMAR MEDIA CORP [Member]	'
Debt Instrument [Line Items]	'
2014	55,935
2015	335,698
2016	27,142
2017	85,000
2018	400,000
Later years	$1,035,027

Longterm_Debt_Additional_Infor

Long-term Debt - Additional Information (Detail) (USD $)

12 Months Ended

0 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

1 Months Ended

1 Months Ended

12 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Feb. 09, 2012

Dec. 04, 2013

Mar. 31, 2009

Dec. 31, 2013

Dec. 31, 2012

Mar. 27, 2009

Apr. 30, 2010

Dec. 31, 2013

Apr. 22, 2010

Feb. 29, 2012

Dec. 31, 2013

Feb. 09, 2012

Oct. 31, 2012

Dec. 31, 2013

Oct. 30, 2012

Dec. 31, 2013

Feb. 09, 2012

Feb. 09, 2012

Feb. 09, 2012

Feb. 09, 2012

Feb. 09, 2012

Feb. 09, 2012

Letter of Credit [Member]

Letter of Credit [Member]

9 3/4% Senior Notes [Member]

9 3/4% Senior Notes [Member]

9 3/4% Senior Notes [Member]

9 3/4% Senior Notes [Member]

9 3/4% Senior Notes [Member]

7 7/8% Senior Subordinated Notes [Member]

7 7/8% Senior Subordinated Notes [Member]

7 7/8% Senior Subordinated Notes [Member]

5 7/8% Senior Subordinated Notes [Member]

5 7/8% Senior Subordinated Notes [Member]

5 7/8% Senior Subordinated Notes [Member]

5% Senior Subordinated Notes [Member]

5% Senior Subordinated Notes [Member]

5% Senior Subordinated Notes [Member]

Senior Credit Facility [Member]

Senior Credit Facility [Member]

Term Loan A-1 Facility [Member]

Term Loan A-2 Facility [Member]

Term Loan A-3 Facility [Member]

Term Loan B Facility [Member]

Incremental Facility [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate on convertible notes

'

'

'

'

'

'

'

'

9.75%

9.75%

'

7.88%

7.88%

'

5.88%

5.88%

'

5.00%

5.00%

'

'

'

'

'

'

'

Aggregate principal amount of debt issued

$1,938,802,000

'

'

'

'

'

'

'

'

$350,000,000

'

'

$400,000,000

'

'

$500,000,000

$535,000,000

'

'

'

'

'

'

'

'

'

Gross proceeds from the issuance of debt

'

1,035,000,000

'

'

'

'

314,927,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net proceeds from the issuance of debt

'

'

'

'

'

'

307,489,000

'

'

'

392,000,000

'

'

489,000,000

'

'

527,100,000

'

'

'

'

'

'

'

'

'

Description of Interest computation

'360-day year comprised of twelve 30-day months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Redemption percentage of aggregate principal amount of senior notes

'

'

'

'

'

'

35.00%

'

'

'

35.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional redeemed percentage of aggregate principal amount

'

'

'

'

'

'

109.75%

'

'

'

107.88%

'

'

105.88%

'

'

105.00%

'

'

'

'

'

'

'

'

'

Redemption percentage equal to principal amount include aggregate premium

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

100.00%

'

'

100.00%

'

'

'

'

'

'

'

'

'

Redemption price percentage of the principal amount to be purchased

'

'

'

'

'

'

'

101.00%

'

'

'

'

'

101.00%

'

'

101.00%

'

'

'

'

'

'

'

'

'

Principal amount of debt extinguished

'

'

'

'

'

350,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Loss (gain) on extinguishment of debt

-14,345,000

-41,632,000

-677,000

'

'

14,345,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-cash loss on debt extinguishment

'

'

'

'

'

3,962,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding revolving credit facility

'

'

'

150,000,000

'

'

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Redemption percentage equal to principal amount include aggregate premium

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Redemption percentage of issued notes which remain outstanding

'

'

'

'

'

'

'

'

'

'

65.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Redemption percentage of aggregate principal amount of senior notes

'

'

'

'

'

'

'

'

'

'

'

'

'

35.00%

'

'

35.00%

'

'

'

'

'

'

'

'

'

Redemption percentage of issued notes which remain outstanding

'

'

'

'

'

'

'

'

'

'

'

'

'

65.00%

'

'

65.00%

'

'

'

'

'

'

'

'

'

Maximum borrowing limit of incremental loan facility

250,000,000

'

'

'

250,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100,000,000

270,000,000

30,000,000

100,000,000

575,000,000

300,000,000

Additional Senior credit facility

200,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior debt ratio

3.25

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of credit facility maximum borrowing capacity available to subsidiaries

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

110,000,000

Reduced percentage of consolidated excess cash flow to repay outstanding loan two

0.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Ratio of indebtedness to net capital minimum

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1

'

'

'

'

'

'

Ratio of indebtedness to net capital one

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5

'

'

'

'

'

'

Letter of credit outstanding

'

'

'

6,973,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Remaining borrowing capacity under revolving credit facility

$93,027,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Longterm_Debt_Remaining_Quarte

Long-term Debt - Remaining Quarterly Amortizations of Term Loan Facilities (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013
December 31, 2013 - March 31, 2014 [Member] | Term Loan A-1 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	$6,750
December 31, 2013 - March 31, 2014 [Member] | Term Loan A-2 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	750
December 31, 2013 - March 31, 2014 [Member] | Term Loan A-3 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	625
December 31, 2013 - March 31, 2014 [Member] | Term Loan B Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	57.5
June 30, 2014 - December 31, 2014 [Member] | Term Loan A-1 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	13,500
June 30, 2014 - December 31, 2014 [Member] | Term Loan A-2 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	1,500
June 30, 2014 - December 31, 2014 [Member] | Term Loan A-3 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	625
June 30, 2014 - December 31, 2014 [Member] | Term Loan B Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	57.4
March 31, 2015 [Member] | Term Loan A-1 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	13,500
March 31, 2015 [Member] | Term Loan A-2 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	1,500
March 31, 2015 [Member] | Term Loan A-3 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	1,250
March 31, 2015 [Member] | Term Loan B Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	57.5
June 30, 2015 - September 30, 2015 [Member] | Term Loan A-1 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	37,125
June 30, 2015 - September 30, 2015 [Member] | Term Loan A-2 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	4,125
June 30, 2015 - September 30, 2015 [Member] | Term Loan A-3 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	1,250
June 30, 2015 - September 30, 2015 [Member] | Term Loan B Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	57.4
December 31, 2015 [Member] | Term Loan A-1 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	74,250
December 31, 2015 [Member] | Term Loan A-2 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	8,250
December 31, 2015 [Member] | Term Loan A-3 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	1,250
December 31, 2015 [Member] | Term Loan B Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	57.4
March 31, 2016 - September 30, 2016 [Member] | Term Loan A-1 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	'
March 31, 2016 - September 30, 2016 [Member] | Term Loan A-2 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	'
March 31, 2016 - September 30, 2016 [Member] | Term Loan A-3 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	1,250
March 31, 2016 - September 30, 2016 [Member] | Term Loan B Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	57.4
December 31, 2016 [Member] | Term Loan A-1 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	'
December 31, 2016 [Member] | Term Loan A-2 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	'
December 31, 2016 [Member] | Term Loan A-3 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	1,250
December 31, 2016 [Member] | Term Loan B Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	21,474.70
March 31, 2017 - June 30, 2017 [Member] | Term Loan A-1 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	'
March 31, 2017 - June 30, 2017 [Member] | Term Loan A-2 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	'
March 31, 2017 - June 30, 2017 [Member] | Term Loan A-3 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	21,250
March 31, 2017 - June 30, 2017 [Member] | Term Loan B Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	'
August 9, 2017 [Member] | Term Loan A-1 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	'
August 9, 2017 [Member] | Term Loan A-2 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	'
August 9, 2017 [Member] | Term Loan A-3 Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	42,500
August 9, 2017 [Member] | Term Loan B Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	'

Longterm_Debt_Remaining_Quarte1

Long-term Debt - Remaining Quarterly Amortizations of Term Loan Facilities (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2013
December 31, 2013 - March 31, 2014 [Member]	'
Debt Instrument [Line Items]	'
Principal payment date	'2014-03-31
June 30, 2014 - December 31, 2014 [Member]	'
Debt Instrument [Line Items]	'
Principal payment date	'2014-06-30 - 2014-12-31
March 31, 2015 [Member]	'
Debt Instrument [Line Items]	'
Principal payment date	'2015-03-31
June 30, 2015 - September 30, 2015 [Member]	'
Debt Instrument [Line Items]	'
Principal payment date	'2015-06-30 - 2015-09-30
December 31, 2015 [Member]	'
Debt Instrument [Line Items]	'
Principal payment date	'2015-12-31
March 31, 2016 - September 30, 2016 [Member]	'
Debt Instrument [Line Items]	'
Principal payment date	'2016-03-31 - 2016-09-30
December 31, 2016 [Member]	'
Debt Instrument [Line Items]	'
Principal payment date	'2016-12-31
March 31, 2017 - June 30, 2017 [Member]	'
Debt Instrument [Line Items]	'
Principal payment date	'2017-03-31 - 2017-06-30
August 9, 2017 [Member]	'
Debt Instrument [Line Items]	'
Principal payment date	'2017-08-09

Asset_Retirement_Obligation_In

Asset Retirement Obligation - Information Related to Asset Retirement Obligation (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Asset Retirement Obligation Disclosure [Abstract]	'	'
Beginning Balance	$189,659	$180,662
Additions to asset retirement obligations	3,741	5,434
Accretion expense	11,046	10,871
Liabilities settled	-3,615	-7,308
Ending Balance	$200,831	$189,659

Depreciation_and_Amortization_1

Depreciation and Amortization - Depreciation and Amortization Expense Excluded from Operating Expenses (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Component Of Other Income And Expense [Line Items]	'	'	'
Depreciation and amortization	$300,579	$296,083	$299,639
Direct advertising expenses [Member]	'	'	'
Component Of Other Income And Expense [Line Items]	'	'	'
Depreciation and amortization	283,280	277,662	283,720
General and administrative expenses [Member]	'	'	'
Component Of Other Income And Expense [Line Items]	'	'	'
Depreciation and amortization	4,684	4,137	4,224
Corporate expenses [Member]	'	'	'
Component Of Other Income And Expense [Line Items]	'	'	'
Depreciation and amortization	$12,615	$14,284	$11,695

Income_Taxes_Income_Tax_Expens

Income Taxes - Income Tax Expense (Benefit) (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax [Line Items]	'	'	'
U.S. federal, Current	$930	'	'
State and local, Current	1,609	823	1,074
Foreign, Current	1,553	1,103	1,847
Total Current	4,092	1,926	2,921
U.S. federal, Deferred	21,681	6,743	1,883
State and local, Deferred	1,165	826	1,125
Foreign, Deferred	-4,097	-1,253	-387
Total, Deferred	18,749	6,316	2,621
U.S. federal, Total	22,611	6,743	1,883
State and local, Total	2,774	1,649	2,199
Foreign, Total	-2,544	-150	1,460
Income tax expense	22,841	8,242	5,542
LAMAR MEDIA CORP [Member]	'	'	'
Income Tax [Line Items]	'	'	'
U.S. federal, Current	930	'	'
State and local, Current	1,609	824	1,075
Foreign, Current	1,553	1,103	1,847
Total Current	4,092	1,927	2,922
U.S. federal, Deferred	21,798	6,859	2,007
State and local, Deferred	1,184	820	1,295
Foreign, Deferred	-4,097	-1,253	-386
Total, Deferred	18,885	6,426	2,916
U.S. federal, Total	22,728	6,859	2,007
State and local, Total	2,793	1,644	2,370
Foreign, Total	-2,544	-150	1,461
Income tax expense	$22,977	$8,353	$5,838

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Loss Carryforwards [Line Items]	'	'	'
Income taxes payable	$848	$252	'
Income tax rate	35.00%	35.00%	35.00%
Net operating loss subject to IRC 382	13,049	'	'
Amounts of credits available to offset income tax	4,443	'	'
Net change in total valuation allowance	-1,087	-332	410
Net operating loss	223,437	214,526	183,601
Potential deferred tax liability	7,583	'	'
Undistributed earnings of subsidiaries	21,665	'	'
Unrecognized tax benefits	35	75	135
Interest and penalty expense	1	3	'
Interest and penalties related to uncertain tax positions	4	14	'
Unrecognized tax benefits, decreases resulting from expiration of statute of limitations	35	'	'
LAMAR MEDIA CORP [Member]	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
Income taxes payable	630	0	'
Income tax rate	35.00%	35.00%	35.00%
Net operating loss subject to IRC 382	13,049	'	'
Amounts of credits available to offset income tax	19,214	'	'
Net change in total valuation allowance	-1,085	-356	407
Net operating loss	223,772	214,862	183,959
Potential deferred tax liability	7,583	'	'
Undistributed earnings of subsidiaries	21,665	'	'
Unrecognized tax benefits	35	75	135
Interest and penalty expense	1	3	'
Interest and penalties related to uncertain tax positions	4	14	'
Unrecognized tax benefits, decreases resulting from expiration of statute of limitations	35	'	'
Domestic Country [Member]	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
US net operating loss carry forward	65,641	'	'
Domestic Country [Member] | LAMAR MEDIA CORP [Member]	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
US net operating loss carry forward	65,976	'	'
State and Local Jurisdiction [Member]	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
Amounts of credits available to offset income tax	247	'	'
State net operating loss carry forward	430,191	'	'
Valuation allowance for State and Local deferred tax assets	2,323	3,410	'
State and Local Jurisdiction [Member] | LAMAR MEDIA CORP [Member]	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
Amounts of credits available to offset income tax	247	'	'
State net operating loss carry forward	392,470	'	'
Valuation allowance for State and Local deferred tax assets	1,751	2,836	'
U S [Member]	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
US net operating loss carry forwards	305,172	'	'
U S [Member] | LAMAR MEDIA CORP [Member]	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
US net operating loss carry forwards	169,411	'	'
Puerto Rico [Member]	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
Amounts of credits available to offset income tax	154	'	'
Puerto Rico net operating loss carry forward	28,523	'	'
Net operating loss	3,285	'	'
Puerto Rico [Member] | LAMAR MEDIA CORP [Member]	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
Amounts of credits available to offset income tax	154	'	'
Puerto Rico net operating loss carry forward	28,523	'	'
Net operating loss	$3,285	'	'

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, 2013	Dec. 31, 2012	Dec. 31, 2011
Components Of Earnings From Continuing Operations Before Income Taxes And Provision For Income Taxes [Line Items]	'	'	'
U.S.	$62,506	$17,279	$13,868
Foreign	474	-1,147	-1,468
Income (loss) before income tax expense	62,980	16,132	12,400
LAMAR MEDIA CORP [Member]	'	'	'
Components Of Earnings From Continuing Operations Before Income Taxes And Provision For Income Taxes [Line Items]	'	'	'
U.S.	62,841	17,615	14,226
Foreign	474	-1,147	-1,468
Income (loss) before income tax expense	$63,315	$16,468	$12,758

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, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]	'	'	'
Income tax expense at U.S. federal statutory rate	$22,043	$5,646	$4,340
State and local income taxes, net of federal income tax benefit	3,585	1,541	847
Book expenses not deductible for tax purposes	1,351	1,058	746
Stock-based compensation	65	270	464
Undistributed earnings of Canadian subsidiaries	'	'	-4,023
Valuation allowance	-1,097	-331	382
Rate Change	-2,565	49	1,743
Other differences, net	-541	9	1,043
Income tax expense	22,841	8,242	5,542
LAMAR MEDIA CORP [Member]	'	'	'
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]	'	'	'
Income tax expense at U.S. federal statutory rate	22,160	5,764	4,465
State and local income taxes, net of federal income tax benefit	3,601	1,557	865
Book expenses not deductible for tax purposes	1,351	1,058	746
Stock-based compensation	65	270	464
Amortization of non-deductible goodwill	'	'	1
Undistributed earnings of Canadian subsidiaries	'	'	-4,023
Valuation allowance	-1,094	-354	382
Rate Change	-2,565	49	1,743
Other differences, net	-541	9	1,195
Income tax expense	$22,977	$8,353	$5,838

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, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]	'	'	'	'
Deferred tax benefit related to APB 23 assertion	'	'	$4,023	'
Rate Change	-2,565	49	1,743	'
Ontario Bill 114 [Member]	'	'	'	'
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]	'	'	'	'
Rate Change	'	49	'	'
Change in general corporate income tax rate	10.00%	11.00%	'	'
Corporate tax rate	'	11.50%	'	'
Puerto Rico [Member]	'	'	'	'
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]	'	'	'	'
Corporate Rico tax rate	39.00%	30.00%	30.00%	39.00%
Rate Change	2,479	'	1,743	'
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%	'	'
LAMAR MEDIA CORP [Member]	'	'	'	'
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]	'	'	'	'
Deferred tax benefit related to APB 23 assertion	'	'	4,023	'
Rate Change	-2,565	49	1,743	'
LAMAR MEDIA CORP [Member] | Ontario Bill 114 [Member]	'	'	'	'
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]	'	'	'	'
Corporate Rico tax rate	'	11.50%	'	'
Rate Change	'	49	'	'
Change in general corporate income tax rate	10.00%	11.00%	'	'
LAMAR MEDIA CORP [Member] | Puerto Rico [Member]	'	'	'	'
Schedule Of Effective Income Tax Rate Reconciliation [Line Items]	'	'	'	'
Corporate Rico tax rate	39.00%	30.00%	30.00%	39.00%
Rate Change	2,479	'	1,743	'
LAMAR MEDIA CORP [Member] | 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%	'	'

Income_Taxes_Components_of_Def

Income Taxes - Components of Deferred Taxes (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Deferred tax assets:	'	'
Allowance for doubtful accounts	$2,972	$2,964
Accrued liabilities not deducted for tax purposes	37,764	35,580
Asset retirement obligation	70,166	65,994
Net operating loss carry forwards	138,865	163,597
Tax credit carry forwards	4,844	3,765
Charitable contributions carry forward	9	592
Gross deferred tax assets	254,620	272,492
Less: valuation allowance	-2,331	-3,424
Net deferred tax assets	252,289	269,068
Deferred tax liabilities:	'	'
Property, plant and equipment	-45,160	-48,271
Intangibles	-314,382	-308,266
Investment in partnerships	-1,519	-1,244
Gross deferred tax liabilities	-361,061	-357,781
Net deferred tax liabilities	-108,772	-88,713
Classification in the consolidated balance sheets:	'	'
Current deferred tax assets	10,378	10,817
Current deferred tax liabilities	'	'
Noncurrent deferred tax assets	'	'
Noncurrent deferred tax liabilities	-119,150	-99,530
Net deferred tax liabilities	-108,772	-88,713
LAMAR MEDIA CORP [Member]	'	'
Deferred tax assets:	'	'
Allowance for doubtful accounts	2,972	2,964
Accrued liabilities not deducted for tax purposes	37,764	35,580
Asset retirement obligation	70,166	65,994
Net operating loss carry forwards	89,496	114,361
Tax credit carry forwards	19,615	18,537
Charitable contributions carry forward	9	592
Gross deferred tax assets	220,022	238,028
Less: valuation allowance	-1,760	-2,851
Net deferred tax assets	218,262	235,177
Deferred tax liabilities:	'	'
Property, plant and equipment	-45,160	-48,271
Intangibles	-313,746	-307,630
Investment in partnerships	-1,519	-1,244
Gross deferred tax liabilities	-360,425	-357,145
Net deferred tax liabilities	-142,163	-121,968
Classification in the consolidated balance sheets:	'	'
Current deferred tax assets	10,378	10,817
Current deferred tax liabilities	'	'
Noncurrent deferred tax assets	'	'
Noncurrent deferred tax liabilities	-152,541	-132,785
Net deferred tax liabilities	($142,163)	($121,968)

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, 2013	Dec. 31, 2012
Reconciliation Of Unrecognized Tax Benefits [Line Items]	'	'
Beginning balance	$75	$135
Additions for tax positions related to current year	1	3
Additions for tax positions related to prior years	'	'
Reductions for tax positions related to prior years	'	'
Lapse of statute of limitations	-41	-63
Settlements	'	'
Ending Balance	35	75
LAMAR MEDIA CORP [Member]	'	'
Reconciliation Of Unrecognized Tax Benefits [Line Items]	'	'
Beginning balance	75	135
Additions for tax positions related to current year	1	3
Additions for tax positions related to prior years	'	'
Reductions for tax positions related to prior years	'	'
Lapse of statute of limitations	-41	-63
Settlements	'	'
Ending Balance	$35	$75

Related_Party_Transactions_Add

Related Party Transactions - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Related Party Transaction [Line Items]	'	'
Deferred gains	$85	$85
Receivables from employees	126	57
Interest owned in service contract	26.66%	'
Aggregate amount payable under the service contract	1,538	'
LAMAR MEDIA CORP [Member]	'	'
Related Party Transaction [Line Items]	'	'
Amount payable to parent company	7,665	8,356
Amount contributed to affiliate	$37,858	$26,839

Stockholders_Equity_Additional

Stockholders' Equity - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Jun. 16, 1999
Class of Stock [Line Items]	'	'	'
Liquidation value of outstanding preferred stock	$3,649	'	'
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	'	'
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	'
Dividends paid to preferred stock	$15.95	'	'
Amount entitled	$638	'	'
Preferred Class A [Member]	'	'	'
Class of Stock [Line Items]	'	'	'
Preferred stock, shares authorized	10,000	10,000	1,000,000
Preferred stock, par value	$638	$638	'
Dividends paid to preferred stock	$15.95	'	'
Amount entitled	$638	'	'

Stock_Compensation_Plans_Addit

Stock Compensation Plans - Additional Information (Detail) (USD $)	12 Months Ended		12 Months Ended					12 Months Ended			12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	31-May-13	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013
			Minimum [Member]	Maximum [Member]	Restricted Stock Award [Member]	2009 Employee Stock Purchase Plan [Member]	2009 Employee Stock Purchase Plan [Member]	Performance Based Compensation [Member]	Common Class A [Member]	Common Class A [Member]	Common Class A [Member]
										1996 Equity Incentive Plan [Member]	2009 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Shares reserved for issuance to directors and employees	'	2,500,000	'	'	'	'	'	'	'	15,500,000	'
Expiration date of options granted under equity incentive plan	'	'	'	'	'10 years	'	'	'	'	'	'
Award vesting period	'	'	'3 years	'5 years	'	'	'	'	'	'	'
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	$6,757	'	'	'	'	'	'	'	'	'	'
Period of graded vesting for option valuation	'4 years	'	'	'	'	'	'	'	'	'	'
Period of cliff vesting for option valuation	'5 years	'	'	'	'	'	'	'	'	'	'
Expected Volatility	'	'	'	'	'	'	'	'	75.00%	'	'
Volatility rate on publicly traded options	'	'	'	'	'	'	'	'	25.00%	'	'
Total unrecognized compensation cost related to nonvested awards	24,107	'	'	'	'	'	'	'	'	'	'
Weighted average number of years over which compensation cost related to nonvested awards is expected to be recognized	'2 years	'	'	'	'	'	'	'	'	'	'
Shares available for future stock option and restricted share grants to employees and directors under existing plans	2,797,768	'	'	'	'	327,689	358,950	'	'	'	'
Aggregate intrinsic value of options outstanding	62,609	'	'	'	'	'	'	'	'	'	'
Aggregate intrinsic value of options exercisable	47,085	'	'	'	'	'	'	'	'	'	'
Total intrinsic value of options exercised	15,362	'	'	'	'	'	'	'	'	'	'
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	'	'	'	'	'	78,963	'	'	'	'	78,963
Range of awards of target number of share	'	'	0.00%	100.00%	'	'	'	'	'	'	'
Compensation expense related to performance based compensation agreements	'	'	'	'	'	'	'	$7,231	'	'	'

Stock_Compensation_Plans_Weigh

Stock Compensation Plans - Weighted Average Fair Value of Options Granted (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'	'
Dividend Yield	0.00%	0.00%	0.00%
Expected Volatility	51.00%	52.00%	52.00%
Risk Free Interest Rate	1.00%	2.00%	2.00%
Expected Lives	'6 years	'5 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, 2013	Dec. 31, 2012	Dec. 31, 2011
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'	'
Outstanding, Beginning Balance, Shares	2,124,886	'	'
Granted, Shares	1,807,000	'	'
Exercised, Shares	-682,263	-586,563	-113,359
Canceled, Shares	-17,200	'	'
Outstanding, Ending Balance, Shares	3,232,423	2,124,886	'
Exercisable, Ending Balance, Shares	1,737,823	'	'
Outstanding, Beginning Balance, Weighted Average Exercise Price	$22.36	'	'
Granted, Weighted Average Exercise Price	$42.31	'	'
Exercised, Weighted-Average Exercise Price	$24.90	'	'
Canceled, Weighted Average Exercise Price	$38.73	'	'
Outstanding, Ending Balance, Weighted Average Exercise Price	$32.89	$22.36	'
Exercisable, Ending Balance, Weighted Average Exercise Price	$25.16	'	'
Outstanding, Ending balance, Weighted Average Remaining Contractual Term	'7 years 4 months 13 days	'	'
Exercisable, Ending Balance, Weighted Average Remaining Contractual Term	'5 years 11 months 12 days	'	'

Stock_Compensation_Plans_Summa

Stock Compensation Plans - Summary of Espp Share Activity (Detail)	12 Months Ended
	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Available for future purchases, December 31, 2013	2,797,768
2009 Employee Stock Purchase Plan [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Available for future purchases, January 1, 2013	358,950
Additional shares reserved under 2009 ESPP	78,963
Purchases	-110,224
Available for future purchases, December 31, 2013	327,689

Benefit_Plans_Additional_Infor

Benefit Plans - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]	'	'	'
Letters of credit with bank	$6,751	'	'
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	'	'
Deferred compensation arrangement with individual employees contribution maximum	8	'	'
Deferred Profit Sharing [Member]	'	'	'
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]	'	'	'
Employer's contribution	3,581	3,184	2,870
Deferred Compensation Plan [Member]	'	'	'
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]	'	'	'
Employer's contribution	$1,323	$1,260	$1,223

Summarized_Financial_Informati1

Summarized Financial Information of Subsidiaries - Additional Information (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Debt Disclosure [Abstract]	'	'
Balance of permitted transfers to parent company	$2,072,542	$1,706,875
Description of actual position on senior credit facility transfers to Lamar Advertising not subject to additional restrictions	'The total holdings debt ratio was less than 5.75 to 1 and Lamar Media's senior debt ratio was less than 3.25 to 1; therefore, transfers to Lamar Advertising were not subject to any additional restrictions under the senior credit facility.	'
Holdings debt ratio	5.75	'
Senior debt ratio	3.25	'
Description of provisions on senior credit facility transfers to Lamar Advertising subject to additional restrictions	'The total holdings debt ratio is greater than 5.75 to 1 or (y) the senior debt ratio is greater than 3.25 to 1.0.	'
Holdings debt ratio related to actual position on senior credit facility	5.75	'
Senior debt ratio related to actual position on senior credit facility	3.25	'

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments - Additional Information (Detail) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value Disclosures [Abstract]	'
Estimated fair value of Long-term debt (including current maturities)	$1,948,040
Gross amount of company long term debt	1,938,802
Carrying amount of company long term debt	$1,938,802

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, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012
				LAMAR MEDIA CORP [Member]	LAMAR MEDIA CORP [Member]	LAMAR MEDIA CORP [Member]	Adjusted [Member]	Adjusted [Member]	Adjusted [Member]	Adjusted [Member]	Adjusted [Member]	Adjusted [Member]	Adjusted [Member]	Adjusted [Member]	Adjusted [Member]	Adjusted [Member]	Adjusted [Member]	Adjusted [Member]	Adjusted [Member]	Adjusted [Member]	Adjusted [Member]	Adjusted [Member]	Previously Reported [Member]	Previously Reported [Member]	Previously Reported [Member]	Previously Reported [Member]	Previously Reported [Member]	Previously Reported [Member]	Previously Reported [Member]	Previously Reported [Member]	Previously Reported [Member]	Previously Reported [Member]	Previously Reported [Member]	Previously Reported [Member]	Previously Reported [Member]	Previously Reported [Member]
															LAMAR MEDIA CORP [Member]	LAMAR MEDIA CORP [Member]	LAMAR MEDIA CORP [Member]	LAMAR MEDIA CORP [Member]	LAMAR MEDIA CORP [Member]	LAMAR MEDIA CORP [Member]	LAMAR MEDIA CORP [Member]	LAMAR MEDIA CORP [Member]								LAMAR MEDIA CORP [Member]	LAMAR MEDIA CORP [Member]	LAMAR MEDIA CORP [Member]	LAMAR MEDIA CORP [Member]	LAMAR MEDIA CORP [Member]	LAMAR MEDIA CORP [Member]	LAMAR MEDIA CORP [Member]
Interim Reporting [Line Items]	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'
Net revenues	$1,245,842	$1,179,736	$1,130,714	$1,245,842	$1,179,736	$1,130,714	$320,352	$321,141	$327,744	$276,605	$306,639	$309,526	$301,106	$262,465	$320,352	$321,141	$327,744	$276,605	$306,639	$309,526	$301,106	$262,465	$323,184	$324,684	$283,479	$305,505	$306,286	$304,872	$266,238	$323,184	$324,684	$283,479	$305,505	$306,286	$304,872	$266,238
Net revenues less direct advertising expenses	'	'	'	'	'	'	210,390	211,501	217,021	170,086	200,440	205,681	196,035	159,042	210,390	211,501	217,021	170,086	200,440	205,681	196,035	159,042	213,544	213,961	176,960	199,306	202,441	199,801	162,815	213,544	213,961	176,960	199,306	202,441	199,801	162,815
Net (loss) income applicable to common stock	39,774	7,525	6,493	'	'	'	10,094	17,003	23,031	-10,354	7,819	13,381	11,534	-25,209	'	'	'	'	'	'	'	'	18,249	21,164	-6,161	7,127	11,405	13,831	-22,907	'	'	'	'	'	'	'
Net (loss) income	$40,139	$7,890	$6,858	$40,338	$8,115	$6,920	'	'	'	'	'	'	'	'	$10,228	$17,144	$23,178	($10,212)	$7,986	$13,561	$11,695	($25,127)	'	'	'	'	'	'	'	$18,390	$21,311	($6,019)	$7,294	$11,585	$13,992	($22,825)
Net (loss) income per common share basic	$0.42	$0.08	$0.07	'	'	'	$0.11	$0.18	$0.24	($0.11)	$0.08	$0.14	$0.13	($0.27)	'	'	'	'	'	'	'	'	$0.09	$0.22	($0.07)	$0.08	$0.12	$0.15	($0.25)	'	'	'	'	'	'	'
Net (loss) income per common share - diluted	$0.42	$0.08	$0.07	'	'	'	$0.11	$0.18	$0.24	($0.11)	$0.08	$0.14	$0.13	($0.27)	'	'	'	'	'	'	'	'	$0.09	$0.22	($0.07)	$0.08	$0.12	$0.15	($0.25)	'	'	'	'	'	'	'

Subsequent_Events_Additional_I

Subsequent Events - Additional Information (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Feb. 03, 2014	Jan. 10, 2014	Feb. 03, 2014	Feb. 03, 2014	Jan. 10, 2014
			Incremental Facility [Member]	Subsequent Event [Member]	Subsequent Event [Member]	Subsequent Event [Member]	Subsequent Event [Member]	5 3/8% Senior Notes due [Member]
						Incremental Facility [Member]	Senior Credit Facility [Member]	Subsequent Event [Member]
Subsequent Event [Line Items]	'	'	'	'	'	'	'	'
Aggregate principal amount of Senior Notes	$1,938,802,000	$2,160,854,000	'	'	'	'	'	$510,000,000
Proceeds received on 5 3/8% Senior Subordinated Notes	'	'	'	'	502,300,000	'	'	'
Interest rate on convertible notes	'	'	'	'	'	'	'	5.38%
Increase in revolving line of credit Facility	$250,000,000	'	$300,000,000	$400,000,000	'	$500,000,000	'	'
Amended and restated date	'	'	'	9-Feb-12	'	'	3-Feb-14	'
Revolving credit facility maturity date	'	'	'	2-Feb-19	'	'	'	'

Schedule_II_Valuation_and_Qual1

Schedule II - Valuation and Qualifying Accounts (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
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	$7,500	$8,100
Charged to Costs and Expenses	6,034	5,484	7,591
Deductions	6,034	5,369	8,191
Balance at End of Period	7,615	7,615	7,500
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	7,500	8,100
Charged to Costs and Expenses	6,034	5,484	7,591
Deductions	6,034	5,369	8,191
Balance at End of Period	7,615	7,615	7,500
Deducted in balance sheet from intangible assets: Amortization of intangible assets [Member]	'	'	'
Valuation and Qualifying Accounts Disclosure [Line Items]	'	'	'
Balance at Beginning of Period	1,794,415	1,705,402	1,602,723
Charged to Costs and Expenses	106,533	102,941	102,679
Deductions	922	13,928	'
Balance at End of Period	1,900,026	1,794,415	1,705,402
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	1,793,476	1,704,492	1,601,843
Charged to Costs and Expenses	106,533	102,941	102,649
Deductions	929	13,957	'
Balance at End of Period	$1,899,080	$1,793,476	$1,704,492