Net Loss per Share (Tables)

6 Months Ended

Jun. 30, 2019

Net Loss per Share

Basic and diluted net loss per share

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2019		2018		2019		2018
Numerator:
Net loss	$	(49,876)	$	(31,218)	$	(87,441)	$	(61,447)
Denominator:
Weighted average shares of common stock outstanding		41,274,808		30,944,899		41,261,808		30,915,577
Net loss per share, basic and diluted	$	(1.21)	$	(1.01)	$	(2.12)	$	(1.99)

Potential common shares excluded from the calculation of diluted net loss per share attributable to common stockholders

	June 30,
	2019	2018
Options to purchase common stock	4,010,423	4,315,942
Restricted stock unit awards	1,959,587	532,756
Total potential shares of common stock	5,970,010	4,848,698