XML 65 R65.htm IDEA: XBRL DOCUMENT
v2.4.1.9

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

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

X
- Definition The aggregate net amount of depreciation, amortization, and accretion recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
Name: | us-gaap_DepreciationAmortizationAndAccretionNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=lamr_AdvertisementExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=lamr_CorporateExpensesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_GeneralAndAdministrativeExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |