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Stockholders' Equity and Stock-Based Compensation (Tables)

9 Months Ended

Oct. 02, 2021

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

The following table shows stock-based compensation expense included in the condensed consolidated statements of operations for the three and nine months ended October 2, 2021 and September 26, 2020:

	Three Months Ended						Nine Months Ended
(in thousands)	October 2, 2021			September 26, 2020			October 2, 2021		September 26, 2020
Cost of revenues	$	180		$	46		$	273	$	105
Research and development		(2	)		(27	)		48		(34	)
Sales and marketing		273			149			412		322
General and administrative		166			75			530		381
	$	617		$	243		$	1,263	$	774

Summary of Stock Options

The following table summarizes stock options information during the nine months ended October 2, 2021:

	Number of Shares			Weighted Average Exercise Price Per Share		Aggregate Intrinsic Value (thousands)
Outstanding as of January 2, 2021		1,649,540		$	4.67
Granted		331,663			6.62
Exercised		(53,220	)		3.29
Canceled or forfeited		(132,023	)		4.47
Outstanding as of October 2, 2021		1,795,960		$	5.09	$	4,920

Weighted Average Assumptions for Fair Value Estimate of Stock-Based Awards (Options)

The Company uses the Black-Scholes option-pricing model to estimate the fair value of stock-based awards (options) with the following weighted average assumptions:

	Three Months Ended						Nine Months Ended
	October 2, 2021			September 26, 2020			October 2, 2021			September 26, 2020
Average risk free interest rate		0.89	%		0.22	%		0.87	%		0.25	%
Expected life (in years)	4.45 years			4.55 years			4.45 years			4.55 years
Dividend yield		—	%		—	%		—	%		—	%
Average volatility		74	%		63	%		74	%		62	%

Summary of Stock Options Outstanding, Vested, Expected to Vest and Exercisable

Information regarding stock options outstanding, vested, expected to vest, and exercisable as of October 2, 2021 is summarized below:

	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (Years)		Aggregate Intrinsic Value (thousands)
Options outstanding		1,795,960	$	5.09		5.61	$	4,920
Options vested and expected to vest		1,602,919	$	5.12		5.48	$	4,405
Options exercisable		699,535	$	5.80		4.34	$	1,751

Restricted Stock Units

Information regarding RSUs activity for the nine months ended October 2, 2021 is summarized below:

	Number of Shares
Outstanding as of January 2, 2021		524,851
RSUs granted		166,598
RSUs released		(381,036	)
RSUs forfeited		(60,164	)
Outstanding as of October 2, 2021		250,249