Net Loss per Share (Tables)

6 Months Ended

Jun. 30, 2020

Net (Loss) Income per Share

Schedule of calculation of basic and diluted net (loss) income per share

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2020		2019		2020		2019
Numerator (basic and diluted):
Net loss	$	(14,310)	$	(6,529)	$	(28,747)	$	(17,508)
Denominator (basic and diluted):
Weighted average shares of common stock outstanding, basic and diluted		21,556,646		20,482,032		21,465,772		20,433,564
Net loss per share, basic and diluted	$	(0.66)	$	(0.32)	$	(1.34)	$	(0.86)

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

	June 30,
	2020	2019
Stock options to purchase common stock	2,498,663	2,948,279
Unvested restricted stock	1,322,064	1,445,817
Common stock warrants	4,646,393	4,646,393
Contingently issuable shares	58,409	5,000
	8,525,529	9,045,489