Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 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		(672	)
Cancelled		20
Balance at September 30, 2021		1,083

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		672		$	7.59
Options exercised		—		$	—
Options cancelled		(20	)	$	8.27
Outstanding at September 30, 2021		652		$	7.57		9.5	$	219
Vested and expected to vest at September 30, 2021		652		$	7.57		9.5	$	219
Vested and exercisable at September 30, 2021		60		$	7.77		9.6	$	7

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

The Company estimated the fair value of stock-options using the Black-Scholes option pricing model. The fair value of employee and non-employee stock options is being amortized on a straight-line basis over the requisite service period of the awards. The fair value of employee and non-employee stock options was estimated using the following assumptions for the three and nine months ended September 30, 2021:

	Three Months Ended September 30, 2021	Nine Months Ended September 30, 2021
Risk-free interest rate	0.8 - 1.1%	0.6 - 1.1%
Expected term (years)	6	6
Expected volatility	73%	72 - 73%
Dividends	0.0%	0.0%

Summary of Restricted Stock Award Activity

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

	Restricted Stock Awards Outstanding
	Number of Units			Weighted Average Grant Date Fair Value Per Share
Non-vested at December 31, 2020		2,050		$	10.30
Restricted stock awards granted		—		$	—
Restricted stock awards vested		(598	)	$	10.34
Restricted stock awards cancelled		—		$	—
Non-vested at September 30, 2021		1,452		$	10.28

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 condensed statements of operations:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Cost of revenue – product	$	46	$	130	$	168	$	130
Cost of revenue – service		27		70		95		70
Selling, general and administrative expenses		1,373		3,179		4,580		3,267
Research and development expenses		127		370		480		370
Total	$	1,573	$	3,749	$	5,323	$	3,837

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
Remainder of 2021	$	1,500
2022		5,606
2023		3,495
2024		469
2025		97
Thereafter		—
Total unrecognized stock-based compensation expense	$	11,167