Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement [Abstract]
Revenue	$ 5,111	$ 6,345	$ 13,427	$ 11,267
Cost of revenue	4,038	4,803	9,658	8,941
Gross profit	1,073	1,542	3,769	2,326
Operating expenses
Research and development	686	665	1,467	1,410
Selling and shipping	349	426	769	845
General and administrative	1,178	1,349	2,403	2,597
Total operating expenses	2,213	2,440	4,639	4,852
Operating loss	(1,140)	(898)	(870)	(2,526)
Other income (expense):
Interest income	82	145	192	302
Interest expense	(3)	(4)	(7)	(10)
Other income (expense)		(4)		1
Total other income, net	79	137	185	293
Loss before income tax	(1,061)	(761)	(685)	(2,233)
Income tax expense			16
Net loss	$ (1,061)	$ (761)	$ (701)	$ (2,233)
Loss per common share - basic	$ (0.15)	$ (0.11)	$ (0.10)	$ (0.33)
Loss per common share - diluted	$ (0.15)	$ (0.11)	$ (0.10)	$ (0.33)
Weighted average common shares
Basic	6,867,868	6,816,956	6,860,846	6,813,127
Diluted	6,867,868	6,816,956	6,860,846	6,813,127