Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2020

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Schedule of Fair Value of Common Stock used for Determining Fair Value of PSUs

The fair value of the Company’s common stock, as used for purposes of determining the fair value of the PSUs, was estimated using the following assumptions:

	Year Ended December 31,
	2020	2019
Risk-free interest rate	0.1 - 0.2%		1.6	%
Expected term (years)	0.11 - 0.25		3
Expected volatility	55 - 70%		60	%
Dividends	0.0%		0.0	%
Marketability discount	4 - 8%		23	%

Summary of Phantom Share Activity

The following table summarizes the phantom share activity during the years ended December 31, 2020 and 2019:

	2020					2019
	Number of Units			Weighted- average grant- date fair value per share		Number of Units			Weighted- average grant- date fair value per share
Non-vested at beginning of year		43		$	6.39		109		$	6.39
Granted		—		$	—		6		$	10.80
Vested		(6	)	$	6.39		(71	)	$	6.75
Forfeited		—		$	—		(1	)	$	6.39
Cancelled		(37	)	$	6.39		—		$	—
Non-vested at end of year		—		$	—		43		$	6.39

Summary of Restricted Stock Award Activity

The following table summarizes the restricted stock award activity under the 2020 Plan for the year ended December 31, 2020:

	2020
	Number of Units			Weighted- average grant- date fair value per share
Non-vested at beginning of year		—		$	—
Granted		2,174		$	10.30
Vested		(96	)	$	10.19
Cancelled		(28	)	$	10.89
Non-vested at end of year		2,050		$	10.30

Summary of Unrecognized Compensation Expense Expected To Be Amortized

The unrecognized compensation expense is expected to be amortized as follows:

	Year Ended December 31,
	2021		2022		2023
Unrecognized stock-based compensation expense	$	5,733	$	4,701	$	2,797

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,
	2020		2019
Cost of revenue—product	$	303	$	29
Cost of revenue—service		165		17
Selling, general and administrative expenses		7,529		696
Research and development expenses		876		76
Total	$	8,873	$	818