CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 28, 2024	Dec. 30, 2023
Current assets:
Cash and cash equivalents	$ 36,057	$ 51,441
Short-term investments	27,091	17,405
Trade and other accounts receivable, net of allowances of $0 at both September 28, 2024 and December 30, 2023	14,461	18,613
Inventories	31,666	43,795
Prepaid expenses and other current assets	1,946	2,123
Total current assets	111,221	133,377
Operating lease right-of-use assets	6,492	7,658
Long-term investments	8,276	2,687
Restricted cash	700	700
Property, plant and equipment, net	7,584	7,664
Intangible assets, net of amortization of $281 at September 28, 2024 and $178 at December 30, 2023	851	954
Deferred income taxes and other long-term assets	1,856	3,466
Total assets	136,980	156,506
Current liabilities:
Current operating lease liabilities	1,257	1,008
Accounts payable	3,040	5,800
Accrued payroll and related liabilities	4,921	3,475
Other accrued liabilities	1,830	1,820
Customer advances	6,291	20,407
Total current liabilities	17,339	32,510
Noncurrent liabilities:
Noncurrent operating lease liabilities	5,814	6,976
Customer advances	1,482	1,482
Other long-term liabilities	0	21
Total noncurrent liabilities	7,296	8,479
Stockholders' equity:
Common stock, $0.001 par value	27	26
Additional paid-in capital	213,748	210,320
Treasury stock, 5,087 shares at both September 28, 2024 and December 30, 2023	(29,551)	(29,551)
Accumulated other comprehensive income	538	97
Accumulated deficit	(72,417)	(65,375)
Total stockholders' equity	112,345	115,517
Total liabilities and stockholders' equity	$ 136,980	$ 156,506