Share-based Compensation (Tables)

9 Months Ended

Sep. 30, 2023

Share-Based Compensation

Schedule of valuation assumptions for applying the Black-Scholes methodology to the options granted under share-based payments

Risk free interest rate, average	3.91%
Expected option life, average	5 years
Expected price volatility, average	91.47%
Expected dividend yield	0%

Schedule of stock option activity

	Number of shares			Weighted average exercise price
Options outstanding at beginning of year		488,477		$	6.48
Granted		160,000			1.01
Less:
Exercised		—			—
Forfeited prior to vesting		(5,210	)		2.50
Canceled or expired		(31,228	)		7.63
Options outstanding at September 30, 2023		612,039			5.03
Options exercisable at end of September 30, 2023		391,537		$	7.06

Schedule of share-based compensation expense

	Three months ended September 30,				Nine months ended September 30,
	2023		2022		2023		2022
Cost of goods sold	$	2	$	2	$	5	$	6
Sales and marketing		2		2		6		9
Research and product development		17		10		37		34
General and administrative		12		10		32		40
	$	33	$	24	$	80	$	89