Equity - Summary of Conversion Ratio of Each Series of Convertible Preferred Stock at Time of Conversion (Details)	6 Months Ended
	Jun. 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