Net Loss per Share of Common Stock (Tables)

12 Months Ended

Dec. 31, 2021

Earnings Per Share [Abstract]

Schedule of Basic and Diluted Earnings per Share of Common Stock

The following table sets forth the computation of basic and diluted earnings per share for the years ended December 31, 2021, 2020, and 2019 (in thousands):

	Year ended December 31,
	2021		2020		2019
Net loss — basic and diluted	$	(58,365)	$	(21,822)	$	(20,243)
Deemed dividend related to Warrant Exchange	—		(12,546)		—
Net loss to common stockholders	$	(58,365)	$	(34,368)	$	(20,243)
Shares used in calculating net loss per share attributable to common stockholders — basic and diluted	195,013,043		112,236,110		13,893,819
Net loss per share attributable to common stockholders — basic and diluted	$	(0.30)	$	(0.31)	$	(1.46)

Schedule of Potentially Dilutive Securities Excluded From Computation of Diluted Weighted Average Shares

The following potentially dilutive securities have been excluded from the computation of diluted weighted-average shares outstanding, as their inclusion would have been antidilutive:

	Year ended December 31,
	2021	2020	2019
Options to purchase common stock	10,086,167	4,224,433	731,189
RSUs	191,811	—	—
Warrants	799,251	870,017	9,643,945
Series A Convertible Preferred Stock (as converted to common stock)	3,115	—	—
Series B Convertible Preferred Stock (as converted to common stock)	547,450	—	—
Total	11,627,794	5,094,450	10,375,134