Net Loss Per Share (Tables)

12 Months Ended

Dec. 31, 2021

Earnings Per Share [Abstract]

Schedule of Loss Per Share, Basic and Diluted

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

	Year Ended December 31,
Numerator:	2021		2020
Net loss	$	(9,051)	$	(7,421)
Less: preferred stock dividends	1		17
Less: undeclared dividends	366		788
Less: conversion inducement	300		—
Less: warrant modification	37		—
Net loss attributable to common stockholders	$	(9,755)	$	(8,226)
Denominator:
Weighted-average number of shares of common stock for basic net loss per share	26,567		5,547
Basic and diluted net loss per share	$	(0.37)	$	(1.48)

Schedule of Potential Shares of Common Stock Excluded from Diluted Weighted Average Shares

The following table represents the potential shares that were excluded from the computation of weighted-average number of shares of common stock in computing the diluted net loss per share for the periods presented because including them would have had an anti-dilutive effect:

	Year Ended December 31,
	2021	2020
Outstanding stock options	407,500	107,500
Unvested restricted stock awards	627	627
Shares of common stock issuable upon conversion of Series A-2 preferred stock	—	18,161
Shares of common stock issuable upon conversion of Series D preferred stock	—	17,020,100
Shares of common stock issuable upon conversion of Series E preferred stock	—	1,315,790
Warrants	5,146,500	1,146,500