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Other Current Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Other Current Liabilities [Line Items]    
Amounts received in advance of revenue recognition $ 10,434  
Amounts due to former customers 4,172  
Other current liabilities 15,136 698
Other
   
Other Current Liabilities [Line Items]    
Other current liabilities $ 530 $ 698