Stockholders' Equity (Tables)

12 Months Ended

Dec. 28, 2024

Equity [Abstract]

Share Activity and Total Number of Share Available for Grant

The following table represents the shares activity and the total number of shares available for grant under the Incentive Plan:

	Shares Available for Grant
Balances as of December 31, 2022		114,995
Shares added		1,000,000
Options granted		(808,410	)
Restricted stock granted		(294,503	)
Options cancelled or forfeited		245,617
Awards cancelled		75,294
Balances as of December 30, 2023		332,993
Options granted		(40,900	)
Restricted stock granted		(862,869	)
Options cancelled or forfeited		1,104,104
Awards cancelled		46,109
Balances as of December 28, 2024		579,437

Stock-Based Compensation Expenses

The following table shows stock-based compensation expenses by functional area in the consolidated statements of operations for 2024 and 2023 (in thousands):

	Year Ended
	December 28, 2024		December 30, 2023
Cost of revenues	$	221	$	213
Research and development		165		217
Sales and marketing		259		378
General and administrative		598		842
Total stock-based compensation expense	$	1,243	$	1,650

Summary of Activity in Stock Option Plan

The following table summarizes information regarding activity in our stock option plans during the fiscal years ended 2024 and 2023 (in thousands except share and per share data):

	Outstanding Options
	Number of Shares			Weighted Average Exercise Price
Balances as of December 31, 2022		2,232,967			4.27
Options granted		808,410			2.13
Options exercised		(37,839	)		2.18
Options cancelled or forfeited		(245,617	)		5.04
Balances as of December 30, 2023		2,757,921		$	3.60
Options granted		40,900			2.37
Options exercised		(2,010	)		1.85
Options cancelled or forfeited		(1,104,104	)		4.66
Balances as of December 28, 2024		1,692,707		$	2.89

Stock Options Outstanding and Exercisable

The following table summarizes information with respect to stock options outstanding and exercisable as of December 28, 2024:

	Options Outstanding						Options Vested and Exercisable
Range of Exercise Prices	Number of Shares Outstanding		Weighted Average Remaining Contractual Life (years)		Weighted Average Exercise Price		Number of Shares Exercisable		Weighted Average Exercise Price
$1.62 - $2.12		63,208		5.46	$	1.94		21,635	$	2.01
$2.13 - $2.13		851,114		4.21	$	2.13		488,167	$	2.13
$2.17 - $2.27		68,563		3.06	$	2.22		55,689	$	2.23
$2.28 - $2.28		319,811		2.93	$	2.28		261,811	$	2.28
$2.30 - $5.04		182,271		2.13	$	4.05		153,154	$	4.19
$5.30 - $6.58		181,240		2.00	$	6.31		179,594	$	6.32
$6.76 - $7.38		22,700		3.24	$	7.30		20,013	$	7.30
$7.40 - $7.40		400		0.57	$	7.40		400	$	7.40
$7.58 - $7.58		3,000		3.82	$	7.58		2,375	$	7.58
$7.62 - $7.62		400		3.75	$	7.62		325	$	7.62
$1.62 - $7.62		1,692,707		3.49	$	2.89		1,183,163	$	3.17

Weighted Average Assumptions for Fair Value of Options Granted

The determination of the fair value of options granted is computed using the Black-Scholes option pricing model with the following weighted average assumptions:

	Employee Stock Option Plan
	December 28, 2024			December 30, 2023
Average risk-free interest rate		4.33	%		4.57	%
Expected life (in years)	4.40 years			4.40 years
Dividend yield		—			—
Average volatility		77.0	%		77.0	%

Stock Options Outstanding, Exercisable and Expected to Vest

Information regarding stock options outstanding, exercisable and expected to vest as of December 28, 2024 is summarized below:

	Number of		Weighted Average		Weighted Average Remaining Contractual		Aggregate Intrinsic Value
	Shares		Exercise Price		Life (years)		(thousands)
Options outstanding		1,692,707	$	2.89		3.49		—
Options vested and expected to vest		1,659,658	$	2.90		3.45		—
Options exercisable		1,183,163	$	3.17		2.59		—

Restricted Stock Units Outstanding, Vested and Expected to Vest

Information regarding the restricted stock units outstanding, vested and expected to vest as of December 28, 2024 is summarized below:

	Number of Shares		Weighted Average Remaining Contractual Life (years)		Aggregate Intrinsic Value (thousands)
Restricted stock units outstanding		615,707		1.57	$	1,028
Restricted stock units vested and expected to vest		558,624		1.53	$	933
Options exercisable		19,913		—	$	33

Restricted Stock Units and Awards

Information regarding the restricted stock unit activity during the years ended December 28, 2024 and December 30, 2023 is summarized below:

	Number of Shares			Weighted Average Grant Date Fair Value
Outstanding as of December 31, 2022		473,029		$	3.13
Restricted stock units granted		196,335		$	1.91
Restricted stock units released		(265,956	)	$	3.10
Restricted stock units forfeited		(50,196	)	$	3.22
Outstanding as of December 30, 2023		353,212		$	2.46
Restricted stock units granted		575,246		$	1.85
Restricted stock units released		(282,012	)	$	2.50
Restricted stock units forfeited		(30,739	)	$	2.28
Outstanding as of December 28, 2024		615,707		$	1.89