Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Accounting Policies [Abstract]

Reconciliation of cash, cash equivalents and restricted cash

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the Company's consolidated balance sheets included herein:

	December 31, 2021		December 31, 2020
Cash and cash equivalents	$	5,329	$	3,423
Restricted cash	264		264
Total cash, cash equivalents and restricted cash	$	5,593	$	3,687

Schedule of estimated useful life of assets used to compute depreciation using the straight-line method

Depreciation and amortization is computed using the straight-line method over the estimated useful lives of the assets once they are placed in service as follows:

Asset Description	Estimated Useful Life (years)
Equipment	3
Furniture and fixtures	5
Software	3
Leasehold improvements	Shorter of useful life or term of lease

Property and equipment consist of the following:

	Year ended December 31,
	2021		2020
Equipment	$	581	$	766
Furniture and fixtures	43		43
Leasehold improvements	1,420		1,414
Software	14		22
Total property and equipment, at cost	2,058		2,245
Less: accumulated depreciation and amortization	(1,168)		(1,324)
Property and equipment, net	$	890	$	921

Schedule of shares used to calculate diluted earnings per share

The following potentially dilutive securities were excluded from the calculation of diluted net loss per share due to their antidilutive effect:

	Year Ended December 31,
	2021	2020
Options	722,765	339,108
Restricted stock awards	9,430	8,500
Warrants	2,361,726	2,843,699
Total	3,093,921	3,191,307