XML 61 R45.htm IDEA: XBRL DOCUMENT
v2.4.1.9

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

X
- Definition Amount included in direct advertising expenses related to barter transactions for the period. + References No definition available. + Details
Name: | lamr_AdvertisingBarterTransactionDirectAdvertisingExpenses
Namespace Prefix: | lamr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount included in general and administrative expenses related to barter transactions for the period. + References No definition available. + Details
Name: | lamr_AdvertisingBarterTransactionGeneralAndAdministrativeExpenses
Namespace Prefix: | lamr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount included in advertising revenue related to barter transactions for the period. + References No definition available. + Details
Name: | lamr_AdvertisingBarterTransactionNetRevenue
Namespace Prefix: | lamr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration