EMPLOYEE EQUITY-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of Option Activity under the Company's Equity-Based Compensation

The following table summarizes option activity under the Company's equity-based compensation plans for the six months ended June 30, 2023:

	Number of Shares	Weighted Average Exercise Price per Share
Options outstanding January 1, 2023	540,732	$	146.03
Granted	10,000	5.10
Forfeited	(10,257)	82.45
Exercised	—	—
Expired	(135,377)	128.71
Options outstanding June 30, 2023	405,098	$	148.78

Schedule of Outstanding Options and Options that are Exercisable (Vested)

The following table shows summary information for outstanding options and options that are exercisable (vested) as of June 30, 2023:

	Options Outstanding		Options Exercisable
Number of options	405,098		331,878
Weighted average remaining contractual term (in years)	5.41		4.97
Weighted average exercise price	$	148.78	$	160.57
Weighted average fair value	$	90.46	$	96.56
Aggregate intrinsic value (in thousands)	$	22	$	—

Schedule of Restricted Stock Activity

The following table summarizes RSU and restricted stock award activity for the six months ended June 30, 2023:

	Number of Shares	Weighted Average Grant Date Fair Value per Share
Outstanding January 1, 2023	435,488	$	42.91
Granted	1,123,922	7.14
Forfeited	(71,301)	42.65
Released	(294,779)	25.38
Outstanding June 30, 2023	1,193,330	$	13.57

Schedule of Equity-Based Compensation Expense

The table below summarizes equity-based compensation expense for the three and six months ended June 30, 2023 and 2022 (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
Cost of sales	$	98	$	228	$	188	$	403
Research and development	256		539		861		901
Sales, general and administrative	1,299		3,204		1,159		5,646
	$	1,653	$	3,971	$	2,208	$	6,950

The table below summarizes share-based compensation cost capitalized to inventory for the three and six months ended June 30, 2023 and 2022 (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
Cost capitalized to inventory	$	35	$	74	$	109	$	117