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Related Party Transactions - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
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

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