Annual report pursuant to Section 13 and 15(d)

Balance Sheet Details - Property and Equipment (Detail)

v3.6.0.2
Balance Sheet Details - Property and Equipment (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Property, Plant and Equipment [Line Items]    
Property and equipment, Gross $ 53,463 $ 46,851
Less accumulated depreciation and amortization (32,914) (24,993)
Property and equipment, net $ 20,549 21,858
Furniture and fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Useful life 5 years  
Property and equipment, Gross $ 1,983 2,458
Machinery and equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, Gross $ 27,028 23,679
Machinery and equipment [Member] | Minimum [Member]    
Property, Plant and Equipment [Line Items]    
Useful life 3 years  
Machinery and equipment [Member] | Maximum [Member]    
Property, Plant and Equipment [Line Items]    
Useful life 5 years  
Masks and production equipment [Member]    
Property, Plant and Equipment [Line Items]    
Useful life 2 years  
Property and equipment, Gross $ 9,153 8,062
Software [Member]    
Property, Plant and Equipment [Line Items]    
Useful life 3 years  
Property and equipment, Gross $ 3,625 3,017
Leasehold improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, Gross $ 11,635 9,573
Leasehold improvements [Member] | Minimum [Member]    
Property, Plant and Equipment [Line Items]    
Useful life 1 year  
Leasehold improvements [Member] | Maximum [Member]    
Property, Plant and Equipment [Line Items]    
Useful life 5 years  
Construction in progress [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment, Gross $ 39 $ 62