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Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]    
Prepaid concession approval fees $ 6 $ 79
Prepaid for procurement of advertising equipment 65 51
Prepaid for rent of advertising spaces 207  
Rental deposits and other receivables 521 143
Total prepaid expenses and other current assets $ 799 $ 273