Share-Based Payments (Tables)

3 Months Ended

Mar. 31, 2022

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   March 31,
	2022		2021
Cost of products	$	8	$	9
Cost of services	31		65
Research and development	548		1,038
Selling, general and administrative	2,975		4,303
Total	$	3,562	$	5,415

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, 2021	12,260,187	$	14.06	6.79
Granted	4,009,390	2.27
Exercised	(375)	2.28
Forfeited	(210,613)	5.63
Expired	(24,036)	11.85
Balances at March 31, 2022	16,034,553	11.22		7.31
Exercisable at March 31, 2022	8,937,195	14.85		5.99

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, 2021	468,481	$	8.47	0.33
Granted	1,387,831	2.12
Vested	(669,041)	5.71
Forfeited	(2,066)	7.26
Balances at March 31, 2022	1,185,205	2.60		0.59