Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2022

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Options Activity

The following is a summary of stock option activity during the nine months ended September 30, 2022:

	Options Outstanding
	Number of Options			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (years)		Aggregate Intrinsic Value
Balance—January 1, 2022		522,905		$	9.25		6.77	$	25,971
Options granted		—		$	—		—	$	—
Options exercised		—		$	—		—	$	—
Options cancelled		(154,309	)	$	9.24		—	$	—
Balance—September 30, 2022		368,596		$	9.26		6.14	$	—
Exercisable as of September 30, 2022		368,596		$	9.26		6.14	$	—
Vested and expected to vest as of September 30, 2022		368,596		$	9.26		6.14	$	—

Summary of Restricted Stock Award Activity

A summary of restricted stock award activity within the Company’s equity plans and changes for the nine months ended September 30, 2022 is as follows:

Restricted Stock Awards	Shares			Weighted Average Grant- Date Fair Value
Nonvested at January 1, 2022		2,106,180		$	14.94
Granted		4,350,642		$	3.17
Vested		(1,622,006	)	$	8.31
Forfeited		(233,561	)	$	14.79
Nonvested at September 30, 2022		4,601,255		$	5.25

Summary of Total Stock-based Compensation Expense by Function

The following table summarizes the total stock-based compensation expense by function, including expense related to consultants, for the three and nine months ended September 30, 2021 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2022		2021		2022
	(in thousands)				(in thousands)
Sales and distribution expenses	$	2,444	$	999	$	4,968	$	4,228
Research and development expenses		1,776		511		3,880		1,418
General and administrative expenses		5,350		1,433		12,482		6,208
Total stock-based compensation expense	$	9,570	$	2,943	$	21,330	$	11,854