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Income Taxes - Income Tax Expense (Benefit) (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Income Tax [Line Items] |  |  |
U.S. federal, Current | $ 930 |  |
State and local, Current | 1,609 | 823 | 1,074
Foreign, Current | 1,553 | 1,103 | 1,847
Total Current | 4,092 | 1,926 | 2,921
U.S. federal, Deferred | 21,681 | 6,743 | 1,883
State and local, Deferred | 1,165 | 826 | 1,125
Foreign, Deferred | (4,097) | (1,253) | (387)
Total, Deferred | 18,749 | 6,316 | 2,621
U.S. federal, Total | 22,611 | 6,743 | 1,883
State and local, Total | 2,774 | 1,649 | 2,199
Foreign, Total | (2,544) | (150) | 1,460
Income tax expense | 22,841 | 8,242 | 5,542
LAMAR MEDIA CORP [Member] |  |  |
Income Tax [Line Items] |  |  |
U.S. federal, Current | 930 |  |
State and local, Current | 1,609 | 824 | 1,075
Foreign, Current | 1,553 | 1,103 | 1,847
Total Current | 4,092 | 1,927 | 2,922
U.S. federal, Deferred | 21,798 | 6,859 | 2,007
State and local, Deferred | 1,184 | 820 | 1,295
Foreign, Deferred | (4,097) | (1,253) | (386)
Total, Deferred | 18,885 | 6,426 | 2,916
U.S. federal, Total | 22,728 | 6,859 | 2,007
State and local, Total | 2,793 | 1,644 | 2,370
Foreign, Total | (2,544) | (150) | 1,461
Income tax expense | $ 22,977 | $ 8,353 | $ 5,838

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