Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022
Operating activities:
Net loss	$ (9,570)	$ (7,547)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,098	485
Amortization of operating lease right-of-use assets	934	899
Stock-based compensation	1,650	1,621
Provision for credit losses	0	187
Changes in operating assets and liabilities:
Accounts receivable	(254)	196
Receivable from related party	612	(433)
Inventories	644	(3,019)
Prepaid expenses and other current assets	612	(397)
Other long-term assets	(427)	(1,185)
Accounts payable	641	1,086
Payable to related party	213	(612)
Accrued compensation	(829)	(744)
Accrued expenses	448	(25)
Accrued warranty	172	116
Deferred revenue	(1,723)	868
Operating lease liabilities	(924)	(886)
Other liabilities	(42)	(129)
Net cash used in operating activities	(6,745)	(9,519)
Investing activities:
Acquisition of property and equipment	(109)	(286)
Net cash used in investing activities	(109)	(286)
Financing activities:
Proceeds for stock option exercises	82	21
Taxes paid related to net share settlements of equity awards	(87)	(94)
Net cash used in financing activities	(5)	(73)
Effect of foreign exchange rate changes	(29)	(52)
Net decrease in cash and cash equivalents	(6,888)	(9,930)
Cash and cash equivalents, beginning of year	13,922	23,852
Cash and cash equivalents, end of year	7,034	13,922
Supplemental disclosure of cash flow information:
Cash paid during the year for income taxes	53	73
Supplemental disclosure of non-cash activities:
Transfer of inventory to property and equipment	(9)	5
ROU assets obtained with the modification of operating lease	$ 1,901	$ 0