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Acquisitions - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Business Acquisition [Line Items]    
Total purchase price of outdoor advertising assets $ 97,230 $ 230,009
Total purchase price of outdoor advertising assets paid in cash 92,248 206,068
Non cash consideration of outdoor advertising assets 4,982 23,941
Gain on exchange of outdoor advertising assets 67 9,805
Total acquired intangible assets 79,784 157,484
Portion of acquired intangible assets assigned to goodwill 18,631 60,968
Amount deductible for tax purposes 18,582 23,937
Aggregate amortization expense related to acquisition 2,158 679
Other [Member]
    
Business Acquisition [Line Items]    
Weighted average useful life 14 years 14 years
Total acquired intangible assets 61,153 96,516
Customer lists and contracts [Member]
    
Business Acquisition [Line Items]    
Total acquired intangible assets 10,390 18,148
Weighted average useful life 7 years 7 years
Site locations [Member]
    
Business Acquisition [Line Items]    
Total acquired intangible assets $ 50,333 $ 78,288
Weighted average useful life 15 years 15 years