XML 73 R68.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
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% |  |

X
- Definition Puerto Rico tax rate. + References No definition available. + Details
Name: | lamr_CorporateIncomeTaxRate
Namespace Prefix: | lamr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Corporate Tax Rate + References No definition available. + Details
Name: | lamr_CorporateTaxRate
Namespace Prefix: | lamr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Deferred tax benefit related to APB 23 assertion. + References No definition available. + Details
Name: | lamr_DeferredTaxBenefit
Namespace Prefix: | lamr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | lamr_ScheduleOfEffectiveIncomeTaxRateReconciliationLineItems
Namespace Prefix: | lamr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the income tax rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
Name: | us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e32059-109318 + Details
Name: | us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration