Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of stock option activities

	September 30, 2023
	Number of Options			Weighted Average
	(In thousands)			Exercise Price
Outstanding at beginning of year		668		$	5.22
Granted		626			1.25
Exercised		(72	)		0.48
Forfeited		(170	)		4.32
Expired		(42	)		8.19
Outstanding on September 30, 2023		1,010		$	3.12
Options exercisable on September 30, 2023		434		$	4.24

Schedule of valuation assumptions for stock-based compensation

	For Three Months Ended September 30, 2023		For Three Months Ended September 30, 2022		For Nine Months Ended September 30, 2023		For Nine Months Ended September 30, 2022
Weighted average grant date fair value	$	–	$	3.58	$	1.08	$	3.41
Weighted average assumptions used:
Expected dividend yield		–		0.0%		0.0%		0.0%
Risk-free interest rate		–		2.81%		3.68%		1.43%
Expected volatility		–		132.2%		114.1%		132.7%
Expected life (in years)		–		6.9		6.4		6.7