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Balance Sheet Details - Summary of Inventories (Detail) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Finished goods $ 30,095 $ 47,094
Raw materials and components 9,875 8,743
Total inventories $ 39,970 $ 55,837