Employee Equity-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2022

Share-based Payment Arrangement [Abstract]

Schedule of Stock Option Activity

The following table summarizes option activity under the Company's equity-based compensation plans for the three months ended March 31, 2022:

	Number of Shares	Weighted Average Exercise Price per Share
Options Outstanding January 1, 2022	7,192,540	$	13.89
Granted	140,000	3.05
Forfeited	(104,141)	13.17
Exercised	—	—
Expired	(410,028)	12.17
Options Outstanding March 31, 2022	6,818,371	$	13.78

Schedule of Black-Scholes Assumptions for Option Granted

The table below summarizes the resulting weighted average inputs used to calculate the estimated fair value of options awarded for the three months ended March 31, 2022 and 2021:

	Three Months Ended March 31,
	2022			2021
Expected term (in years)	6.30			0
Volatility	66		%	—		%
Expected dividends	—			—
Risk free interest rates	2.05		%	—		%
Weighted average fair value	$	1.88		$	—

Schedule of Stock Option Supplemental Information

The following table shows summary information for outstanding options and options that are exercisable (vested) as of March 31, 2022:

	Options Outstanding		Options Exercisable
Number of options	6,818,371		4,916,480
Weighted average remaining contractual term (in years)	5.44		4.46
Weighted average exercise price	$	13.78	$	14.64
Weighted average fair value	$	8.56	$	9.04
Aggregate intrinsic value (in thousands)	$	120	$	120

Schedule of Restricted Stock Activity

The following table summarizes RSU and restricted stock award activity for the three months ended March 31, 2022:

	Number of Shares	Weighted Average Grant Date Fair Value per Share
Outstanding January 1, 2022	2,090,182	$	10.77
Granted	1,740,291	2.13
Forfeited	(66,750)	11.51
Vested/released	(153,750)	10.71
Outstanding March 31, 2022	3,609,973	$	6.59

Schedule of Equity-Based Compensation Expense and Tax Benefit

The table below summarizes equity-based compensation expense for the three months ended March 31, 2022 and 2021 (in thousands):

	Three Months Ended March 31,
	2022		2021
Cost of sales	$	175	$	101
Research and development	362		2,746
Sales, general and administrative	2,442		5,992
	$	2,979	$	8,839

The table below summarizes share-based compensation cost capitalized to inventory or inventory transferred to property and equipment (also referred to as instruments) for the three months ended March 31, 2022 and 2021 (in thousands):

	Three Months Ended March 31,
	2022		2021
Cost capitalized to inventory	$	43	$	155

The table below summarizes share-based compensation cost in connection with performance-based stock options for the three months ended March 31, 2022 and 2021 (in thousands):

	Three Months Ended March 31,
	2022		2021
Performance-based stock option expense	$	—	$	165

The table below summarizes share-based compensation cost in connection with performance-based RSUs for the three months ended March 31, 2022 and 2021 (in thousands):

	Three Months Ended March 31,
	2022		2021
Performance-based RSU expense	$	—	$	547