Net Loss Per Share (Tables)

6 Months Ended

Jun. 30, 2021

Net Loss Per Share [Abstract]

Basic and Diluted Net Loss Per Share

Basic and diluted net loss per share attributable to common stockholders was calculated as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2021			2020			2021			2020
Numerator:
Net loss attributable to common stockholders	$	(34,525	)	$	(25,040	)	$	(74,704	)	$	(49,704	)
Denominator:
Weighted-average common shares outstanding - basic and diluted		63,061,232			55,158,459			62,321,926			55,020,789
Net loss per share attributable to common stockholders - basic and diluted	$	(0.55	)	$	(0.45	)	$	(1.20	)	$	(0.90	)

Antidilutive Securities Excluded from Computation of Diluted Net Loss Per Share

The Company excluded the following potential shares of common stock, presented based on amounts outstanding at each period end, from the computation of diluted net loss per share attributable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect:

	Three and Six Months Ended June 30,
	2021		2020
Shares issuable upon conversion of the 2021 Convertible Notes		160,536		160,536
Shares issuable upon conversion of the 2022 Convertible Notes		-		1,460,412
Warrants exercisable for common shares		610,437		14,102
Restricted stock units exercisable for common shares		23,500		-
Options to purchase common shares		11,040,697		10,776,813
		11,835,170		12,411,863