Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Summary of Employee Stock-Based Compensation Expense (Details)

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Stock-Based Compensation - Summary of Employee Stock-Based Compensation Expense (Details) (USD $)
 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Stock-based compensation expense $ 2,027,000 $ 38,000 $ 10,851,000 $ 381,000
Cost of revenue
        
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Stock-based compensation expense 10,000 (2,000) 225,000  
Research and development
        
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Stock-based compensation expense 505,000 (10,000) 1,304,000 43,000
General and administrative
        
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Stock-based compensation expense 715,000 54,000 6,192,000 88,000
Selling and marketing
        
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Stock-based compensation expense 554,000 14,000 2,265,000 249,000
Capitalized into inventory
        
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]        
Stock-based compensation expense $ 243,000 $ (18,000) $ 865,000 $ 1,000