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Segment and Geographical Information - Schedule of Long Lived Assets by Geographical Areas (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total consolidated assets $ 146,704 $ 344,923
United States [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total consolidated assets 97,967 200,978
International [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total consolidated assets $ 48,737 $ 143,945