Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2023

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Options Activity

The following is a summary of stock option activity during the six months ended June 30, 2023:

	Options Outstanding
	Number of Options			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (years)		Aggregate Intrinsic Value
Balance—January 1, 2023		368,596		$	9.26		5.89	$	—
Options granted		—		$	—	—		$	—
Options exercised		—		$	—	—		$	—
Options canceled		(168,564	)	$	9.32	—		$	—
Balance—June 30, 2023		200,032		$	9.21		5.41	$	—
Exercisable as of June 30, 2023		200,032		$	9.21		5.41	$	—
Vested and expected to vest as of June 30, 2023		200,032		$	9.21		5.41	$	—

Summary of Restricted Stock Award Activity

A summary of restricted stock award activity within the Company’s equity plans and changes for the six months ended June 30, 2023 is as follows:

Restricted Stock Awards	Shares			Weighted Average Grant- Date Fair Value
Nonvested at January 1, 2023		4,223,023		$	4.85
Granted		8,090,965		$	0.61
Vested		(2,458,850	)	$	3.00
Forfeited		(1,128,411	)	$	4.13
Nonvested at June 30, 2023		8,726,727		$	1.53

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 six months ended June 30, 2022 and 2023 (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2023		2022		2023
	(in thousands)				(in thousands)
Sales and distribution expenses	$	2,882	$	1,091	$	3,229	$	1,761
Research and development expenses		633		423		907		857
General and administrative expenses		2,533		1,709		4,777		2,921
Total stock-based compensation expense	$	6,048	$	3,223	$	8,913	$	5,539