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Long-Term Deferred Expenses - Summary of Long-Term Deferred Expenses (Detail) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Deferred Expenses Non Current [Line Items]    
Deferred costs $ 917   
Rent Of Advertising Space [Member]
    
Deferred Expenses Non Current [Line Items]    
Weighted average amortization period 5 years  
Deferred costs 484   
Concession Approval Fees [Member]
    
Deferred Expenses Non Current [Line Items]    
Weighted average amortization period 3 years  
Deferred costs $ 433