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Related Party Transactions - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
Related Party Transaction [Line Items] |  |
Deferred gains | $ 85 | $ 941
Receivables from employees | 57 | 230
Annual consulting fee | 190 |
Annual consulting fee for renewal | 150 |
Amended consulting agreement period | 5 years |
Consulting agreement renewal period | 1 year |
Termination Date | Sep. 30, 2012 |
Consulting Fees Paid | 112 |
Interest owned in service contract | 26.66% |
Aggregate amount payable under the service contract | 1,328 |
LAMAR MEDIA CORP [Member] |  |
Related Party Transaction [Line Items] |  |
Amount payable to parent company | 8,356 | 9,400
Amount contributed to affiliate | $ 26,839 | $ 16,553

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