Share-Based Payments (Tables)

9 Months Ended

Sep. 30, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of Stock-Based Compensation Costs

Stock-based compensation costs included in the condensed consolidated statements of operations are presented below:

	Three Months Ended   September 30,				Nine Months Ended   September 30,
	2023		2022		2023		2022
Cost of products and services	20		22		55		85
Research and development	579		524		1,666		1,658
Selling, general and administrative	1,707		1,638		5,905		6,244
Discontinued operations	—		(59)		—		9
Total	$	2,306	$	2,125	$	7,626	$	7,996

Schedule of Stock Option Activity

Stock option activity was as follows:

	Number of Shares	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)
Balances at December 31, 2022	15,201,276	$	10.41	6.87
Granted	7,706,369	1.19
Exercised	—	—
Forfeited	(244,000)	2.65
Expired	(712,305)	20.52
Balances at September 30, 2023	21,951,340	6.93		7.37
Exercisable at September 30, 2023	11,503,244	10.51		6.02

Schedule of Restricted Stock Unit Activity

RSU activity was as follows:

	Number of Restricted Stock Units	Weighted Average Grant Date Fair Value		Weighted Average Remaining Contractual Term (Years)
Balances at December 31, 2022	697,815	$	2.66	0.13
Granted	4,083,777	1.01
Vested	(3,820,058)	1.27
Forfeited	—	—
Balances at September 30, 2023	961,534	1.17		0.44