Quarterly report pursuant to Section 13 or 15(d)

Equity - Summary of Conversion Ratio of Each Series of Convertible Preferred Stock at Time of Conversion (Details)

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Equity - Summary of Conversion Ratio of Each Series of Convertible Preferred Stock at Time of Conversion (Details)
 3 Months Ended
Mar. 31, 2014
Series A
  
Class Of Stock [Line Items]  
Conversion ratio of convertible preferred stock at time of conversion 0.0388
Series A-1
  
Class Of Stock [Line Items]  
Conversion ratio of convertible preferred stock at time of conversion 0.0582
Series B
  
Class Of Stock [Line Items]  
Conversion ratio of convertible preferred stock at time of conversion 0.0414
Series B-1
  
Class Of Stock [Line Items]  
Conversion ratio of convertible preferred stock at time of conversion 0.0591
Series C
  
Class Of Stock [Line Items]  
Conversion ratio of convertible preferred stock at time of conversion 0.0435
Series C-1
  
Class Of Stock [Line Items]  
Conversion ratio of convertible preferred stock at time of conversion 0.0631
Series D
  
Class Of Stock [Line Items]  
Conversion ratio of convertible preferred stock at time of conversion 0.0505
Series D-1
  
Class Of Stock [Line Items]  
Conversion ratio of convertible preferred stock at time of conversion 0.0653
Series E
  
Class Of Stock [Line Items]  
Conversion ratio of convertible preferred stock at time of conversion 0.0441
Series F
  
Class Of Stock [Line Items]  
Conversion ratio of convertible preferred stock at time of conversion 0.2500