Stockholders' Equity and Stock-Based Compensation (Tables)

3 Months Ended

Mar. 28, 2020

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation Expenses

The following table shows stock-based compensation expenses included in the condensed consolidated statements of operations for the three months ended March 28, 2020 and March 30, 2019:

	Three Months Ended
(in thousands)	March 28, 2020			March 30, 2019
Cost of revenues	$	24		$	19
Research and development		(31	)		103
Sales and marketing		39			163
General and administrative		63			330
	$	95		$	615

Summary of Stock Options

The following table summarizes stock options information during the three months ended March 28, 2020:

	Number of Shares			Weighted Average Exercise Price Per Share		Aggregate Intrinsic Value (thousands)
Outstanding as of December 28, 2019		1,383,552		$	6.11
Granted		51,000		$	2.27
Exercised		—		$	—
Canceled or forfeited		(132,102	)	$	6.76
Outstanding as of March 28, 2020		1,302,450		$	5.89	$	—

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:

	March 28, 2020			March 30, 2019
Average risk free interest rate		0.46	%		2.15	%
Expected life (in years)	4.55 years			4.55 years
Dividend yield		—	%		—	%
Average volatility		57	%		44	%

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

Information regarding stock options outstanding, vested, expected to vest, and exercisable as of March 28, 2020 is summarized below:

	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (Years)		Aggregate IntrinsicValue (thousands)
Options outstanding		1,302,450	$	5.89		5.13	$	—
Options vested and expected to vest		1,131,040	$	6.09		4.98	$	—
Options exercisable		373,116	$	8.57		2.78	$	—

Restricted Stock Units

Information regarding the restricted stock units (“RSUs”) activity for the three months ended March 28, 2020 is summarized below:

	Number of Shares
Outstanding as of December 28, 2019		411,133
Restricted stock units granted		—
Restricted stock units released		(3,499	)
Restricted stock units forfeited		(95,785	)
Outstanding as of March 28, 2020		311,849