Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2021

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Shares Available for Issuance Under 2020 Plan

A summary of the shares available for issuance under the 2020 Plan is as follows:

	Number of Shares
Balance at December 31, 2020		1,188
Authorized		547
Granted/Awarded		(674	)
Cancelled		21
Balance at December 31, 2021		1,082

Summary of Option Award Activity

Option award activity under the 2020 Plan is set forth below:

	Options Outstanding
	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (In Years)		Aggregate Intrinsic Value
Outstanding at December 31, 2020		—		$	—		—	$	—
Options granted		674		$	7.59
Options exercised		—		$	—
Options cancelled		(21	)	$	8.27
Outstanding at December 31, 2021		653		$	7.57		9.3	$	—
Vested and expected to vest at December 31, 2021		653		$	7.57		9.3	$	—
Vested and exercisable at December 31, 2021		94		$	7.70		9.4	$	—

Summary of Fair Value of Employee and Non-Employee Stock Options was Estimated Using Assumptions

The fair value of employee and non-employee stock options was estimated using the following assumptions for the year ended December 31, 2021:

	Year Ended December 31,
	2021
Risk-free interest rate	0.6 - 1.3%
Expected term (years)	6
Expected volatility	72 - 73%
Dividends	0.0%

Summary of Restricted Stock Award Activity

Restricted stock award activity under the 2020 Plan is set forth below:

	2021
	Number of Units			Weighted- average grant- date fair value per share
Non-vested at beginning of year		2,050		$	10.30
Granted		—		$	—
Vested		(718	)	$	10.31
Cancelled		—		$	—
Non-vested at end of year		1,332		$	10.29

Summary of Total Stock-Based Compensation Expense Recognized

The following table sets forth the total stock-based compensation expense recognized under the 2020 Plan, the 2020 ESPP and the Phantom Stock Plan in the Company’s statements of operations:

	Year Ended December 31,
	2021		2020
Cost of revenue—product	$	216	$	303
Cost of revenue—service		122		165
Selling, general and administrative expenses		5,914		7,529
Research and development expenses		614		876
Total	$	6,866	$	8,873

Summary of Unrecognized Stock-based Compensation Expense Expected to be Amortized

Total unrecognized stock-based compensation expense is expected to be amortized as follows:

Fiscal Year	Amount
2022	$	5,607
2023		3,497
2024		470
2025		99
2026		—
Thereafter		—
Total unrecognized stock-based compensation expense	$	9,673