Share-based Compensation (Tables)

6 Months Ended

Jun. 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			—
Less:
Exercised		—			—
Forfeited prior to vesting		(1,355	)		2.50
Canceled or expired		(1,437	)		8.88
Options outstanding at June 30, 2023		645,685			5.14
Options exercisable at end of June 30, 2023		405,400		$	7.30

Schedule of share-based compensation expense

	Three months ended June 30,				Six months ended June 30,
	2023		2022		2023		2022
Cost of goods sold	$	1	$	2	$	3	$	4
Sales and marketing		2		3		4		7
Research and product development		11		11		20		24
General and administrative		10		14		20		30
	$	24	$	30	$	47	$	65