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Segment Information and Information about Geographic Areas - Net Revenues of Customer by Geographic Area (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]        
Net revenues, Total $ 40,339 $ 28,312 $ 112,403 $ 77,673
North America [Member]        
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]        
Net revenues, Total 34,538 24,878 96,957 67,839
Other [Member]        
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]        
Net revenues, Total $ 5,801 $ 3,434 $ 15,446 $ 9,834