Equity Incentive Plan - Schedule of Stock Option Plan (Details)	3 Months Ended
	Mar. 31, 2016 $ / shares shares
Number of options
Number of options, Outstanding at beginning of year | shares	10,134,829
Number of options, Granted | shares	1,711,575
Number of options, Exercised | shares	(332,984)
Number of options, Forfeited and cancelled | shares	(24,620)
Number of options, Outstanding at ending of year | shares	11,488,800
Number of options, Exercisable options | shares	5,871,196
Number of options, Vested and expected to vest | shares	11,303,362
Weighted average exercise price
Weighted average exercise price, Outstanding at beginning of year | $ / shares	$ 8.20
Weighted average exercise price, Granted | $ / shares	14.45
Weighted average exercise price, Exercised | $ / shares	0.17
Weighted average exercise price, Forfeited and cancelled | $ / shares	16.54
Weighted average exercise price, Outstanding at end of year | $ / shares	9.35
Weighted average exercise price, Exercisable options | $ / shares	4.18
Weighted average exercise price, Vested and expected to vest | $ / shares	$ 9.27