Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2023

Stockholders' Equity Note [Abstract]

Schedule of Stock Options Activity

A summary of the stock option activity under the Company's equity incentive plans is presented below:

	Number of Shares	Weighted Average Exercise Price		Weighted Average Remaining Term	Aggregate Intrinsic Value
Balance as of December 31, 2022	3,976	$	6.20	3.80	$	—
Granted	57	0.61
Exercised	(34)	0.86
Forfeited	(182)	5.25
Expired	(440)	5.90
Balance as of December 31, 2023	3,377	$	6.24	2.36	$	—
Expected to vest at December 31, 2023	3,377	$	6.24	2.36	$	—
Exercisable at December 31, 2023	3,045	$	6.44	1.71	$	—

Schedule of Fair Value of Stock Option Awards Valuation Assumptions

The fair value of stock option awards is estimated on the date of grant using the Black-Scholes option-pricing model based upon the following range of assumptions:

	2023	2022	2021
Exercise price	$0.61 – $0.62	$1.17 –$5.31	$8.99 – $9.25
Expected dividend yield	0%	0%	0%
Expected volatility	93% –97%	48% – 93%	45% –48%
Expected term (years)	6.10– 6.20	1.00 – 6.20	5.00 – 6.07
Risk free interest rate	4.17% – 4.57%	1.86% – 3.95%	0.80% – 1.04%

Schedule of RSU Activity

A summary of RSU activity is presented below:

	Shares	Weighted Average Grant-Date Fair Value
Outstanding as of December 31, 2022	7,495	$	3.59
Granted	12,360	0.56
Vested	(4,531)	3.10
Forfeited	(6,565)	1.76
Outstanding as of December 31, 2023	8,759	$	0.94