Net Loss per Share (Tables)

12 Months Ended

Dec. 31, 2021

Earnings Per Share [Abstract]

Computation of Company's Basic and Diluted Net Loss Per Share

The following table sets forth the computation of the Company’s basic and diluted net loss per share for the periods presented (in thousands, except share and per share data):

	Year Ended December 31,
	2021		2020		2019
Net loss attributable to common stockholders, basic and diluted	$	(110,048)	$	(107,908)	$	(120,199)
Weighted-average common shares used in computing net loss per share, basic and diluted	164,521,064		147,895,561		102,001,954
Net loss per share, basic and diluted	$	(0.67)	$	(0.73)	$	(1.18)

Dilutive Securities Excluded from Calculation of Diluted Earnings Per Share

The following table sets forth securities outstanding that could potentially dilute the calculation of diluted earnings per share:

	Year Ended December 31,
	2021	2020	2019
Options to purchase common stock	7,195,398	8,142,348	11,165,846
Warrants to purchase common stock - liability classified	2,036,733	2,156,153	2,156,153
Warrants to purchase common stock - equity classified	1,418,116	1,418,116	1,457,866
Unvested restricted stock units	6,244,013	8,046,399	4,379,777