Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023
Operating activities:
Net loss	$ (8,076)	$ (6,610)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	449	479
Amortization of operating lease right-of-use assets	598	777
Accretion of original issue discount	59	0
Amortization of debt issuance costs	72	0
Stock-based compensation	927	1,244
Changes in operating assets and liabilities:
Accounts receivable	773	363
Receivable from related party	1,101	1,534
Inventories	(1,036)	409
Prepaid expenses and other current assets	(899)	339
Other long-term assets	126	(227)
Accounts payable	1,702	(1,247)
Payable to related party	351	(12)
Accrued compensation	223	(251)
Accrued expenses	(989)	(377)
Deferred revenue	(1,335)	(1,442)
Operating lease liabilities	(596)	(774)
Other liabilities	503	29
Net cash used in operating activities	(6,047)	(5,766)
Investing activities:
Acquisition of property and equipment	(4)	(141)
Net cash used in investing activities	(4)	(141)
Financing activities:
Net proceeds from issuance of convertible note payable	3,370	0
Cash paid for debt issuance costs	(493)	0
Proceeds for stock option exercises	4	37
Taxes paid related to net share settlements of equity awards	(58)	(87)
Net cash provided by (used in) financing activities	2,823	(50)
Effect of foreign exchange rate changes	54	16
Net decrease in cash and cash equivalents	(3,174)	(5,941)
Cash and cash equivalents, beginning of period	7,034	13,922
Cash and cash equivalents, end of period	3,860	7,981
Supplemental disclosure of cash flow information:
Cash paid during the period for income taxes	17	54
Supplemental disclosure of non-cash activities:
Transfer of inventory to property and equipment	0	70
ROU assets obtained with extension of operating lease	0	1,901
Issuance of incentive shares under convertible note payable	$ 250	$ 0