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
Mar. 31, 2014
Mar. 31, 2013
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock-based compensation expense $ 1,404,000 $ 46,000
Cost of revenue
    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock-based compensation expense 2,000  
Research and development
    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock-based compensation expense 87,000 12,000
General and administrative
    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock-based compensation expense 852,000 30,000
Selling and marketing
    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock-based compensation expense 420,000 4,000
Capitalized into inventory
    
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]    
Stock-based compensation expense $ 43,000