Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jul. 02, 2023	Jul. 03, 2022
Cash flows from operating activities:
Net loss	$ (3,497)	$ (1,688)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	411	334
Stock-based compensation	1,301	860
Write-down of inventories and reclassifications	212	54
Gain on disposal of equipment	0	(76)
Other	5	0
Changes in operating assets and liabilities:
Accounts receivable	1,747	(2,266)
Contract assets	974	0
Inventories	(174)	(188)
Other assets	(1,475)	(6)
Trade payables	(269)	1,161
Accrued liabilities	455	87
Deferred revenue	22	(313)
Other long-term liabilities	56	(22)
Net cash used in operating activities	(232)	(2,063)
Cash flows from investing activities:
Capital expenditures for property and equipment	(227)	(117)
Capitalized internal-use software	(303)	(285)
Net cash used in investing activities	(530)	(402)
Cash flows from financing activities:
Payment of finance lease obligations	(288)	(198)
Proceeds from line of credit	30,000	30,000
Repayment of line of credit	(30,000)	(30,000)
Proceeds from issuance of common stock	121	1,604
Proceeds from issuance of common stock to investors	2,313	0
Stock issuance cost	(20)	0
Net cash provided by financing activities	2,126	1,406
Net increase (decrease) in cash, cash equivalents and restricted cash	1,364	(1,059)
Cash, cash equivalents and restricted cash at beginning of period	19,201	19,605
Cash, cash equivalents and restricted cash at end of period	20,565	18,546
Supplemental disclosures of cash flow information:
Interest paid	42	13
Income taxes paid	10	12
Supplemental disclosures of non-cash financing and investing items
Purchases of fixed assets with financing lease	445	0
Stock-based compensation capitalized as internal-use software	20	0
Stock-based compensation capitalized as tooling and fixed assets	41	0
Purchases of property and equipment in accounts payable	$ 1,147	$ 13