Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Accounting Policies [Abstract]

Level 3 Fair Value Reconciliation

A roll-forward of fair value measurements using significant unobservable inputs (Level 3) for the January 2020 Warrants issued in the January 2020 Equity Offering is as follows (in thousands):

	Twelve months ended December 31, 2020
Balance January 1, 2020	$	—
Issuance of warrants, January 2020	1,636
Settlements from exercise	(1,317)
Loss from change in fair value of warrants	1,086
Reclassification to equity upon modification	(1,405)
Balance December 31, 2020	$	—

Schedule of Earnings Per Share, Basic and Diluted

The following table presents a reconciliation of basic and diluted loss per share computations (in thousands, except per share amounts):

	For the years ended December 31,
	2021		2020
Numerator:
Net loss	$	(7,886)	$	(5,981)
Denominator:
Basic and diluted weighted average common shares outstanding*	4,561		3,270
*Shares outstanding for prior periods have been restated for the 1-for-5 stock split effective June 11, 2020.

Schedule of Warranty Activity

The following table summarizes warranty activity for the periods presented (in thousands):

	At December 31,
	2021		2020
Balance at the beginning of the year	$	227	$	195
Accruals for warranties issued	(41)		33
Adjustments to existing warranties	47		19
Settlements made during the year (in kind)	62		(20)
Accrued warranty reserve at the end of the period	$	295	$	227