Share-Based Payments (Tables)

6 Months Ended

Jun. 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   June 30,				Six Months Ended   June 30,
	2023		2022		2023		2022
Cost of products and services	$	17	$	30	$	35	$	63
Research and development	582		589		1,087		1,134
Selling, general and administrative	1,589		1,660		4,198		4,606
Discontinued operations	—		30		—		68
Total	$	2,188	$	2,309	$	5,320	$	5,871

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	7,507,869	1.19
Exercised	—	—
Forfeited	(220,625)	2.74
Expired	(163,425)	17.74
Balances at June 30, 2023	22,325,095	7.33		7.54
Exercisable at June 30, 2023	11,759,874	11.22		6.14

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	(2,904,284)	1.37
Forfeited	—	—
Balances at June 30, 2023	1,877,308	1.07		0.43