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)
9 Months Ended
Sep. 30, 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