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Stockholders' Equity and Stock-Based Compensation (Tables)

6 Months Ended

Jul. 03, 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 six months ended July 3, 2021 and June 27, 2020:

	Three Months Ended				Six Months Ended
(in thousands)	July 3, 2021		June 27, 2020		July 3, 2021		June 27, 2020
Cost of revenues	$	46	$	35	$	93	$	59
Research and development		14		24		50		(7	)
Sales and marketing		41		134		139		173
General and administrative		179		243		364		306
	$	280	$	436	$	646	$	531

Summary of Stock Options

The following table summarizes stock options information during the six months ended July 3, 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		49,000			6.83
Exercised		(23,304	)		4.15
Canceled or forfeited		(126,836	)		4.47
Outstanding as of July 3, 2021		1,548,400		$	4.77	$	4,297

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						Six Months Ended
	July 3, 2021			June 27, 2020			July 3, 2021			June 27, 2020
Average risk free interest rate		0.79	%		0.27	%		0.77	%		0.39	%
Expected life (in years)	4.45 years			4.55 years			4.45 years			4.55 years
Dividend yield		—	%		—	%		—	%		—	%
Average volatility		73	%		62	%		73	%		59	%

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

Information regarding stock options outstanding, vested, expected to vest, and exercisable as of July 3, 2021 is summarized below:

	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (Years)		Aggregate Intrinsic Value (thousands)
Options outstanding		1,548,400	$	4.77		5.63	$	4,297
Options vested and expected to vest		1,388,531	$	4.84		5.49	$	3,815
Options exercisable		697,847	$	5.73		4.62	$	1,599

Restricted Stock Units

Information regarding RSUs activity for the six months ended July 3, 2021 is summarized below:

	Number of Shares
Outstanding as of January 2, 2021		524,851
RSUs granted		29,485
RSUs released		(315,643	)
RSUs forfeited		(54,312	)
Outstanding as of July 3, 2021		184,381