Details of Certain Financial Statement Components - Intangible assets, net (Details) - USD ($)	15 Months Ended
	Mar. 31, 2026	Dec. 31, 2025
Intangible assets, net
Gross Carrying Amount	$ 4,045,000	$ 4,108,000
Accumulated Amortization	(2,906,000)	(2,775,000)
Net Carrying Amount	1,139,000	1,333,000
Amortization expense	$ 172,000
Patents, tradenames, and trademarks
Intangible assets, net
Weighted Average Amortization period	5 years
Gross Carrying Amount	$ 943,000	948,000
Accumulated Amortization	(825,000)	(817,000)
Net Carrying Amount	$ 118,000	131,000
Developed technology
Intangible assets, net
Weighted Average Amortization period	3 years 6 months
Gross Carrying Amount	$ 644,000	654,000
Accumulated Amortization	(537,000)	(504,000)
Net Carrying Amount	$ 107,000	150,000
Customer relationships
Intangible assets, net
Weighted Average Amortization period	6 years
Gross Carrying Amount	$ 1,496,000	1,525,000
Accumulated Amortization	(806,000)	(761,000)
Net Carrying Amount	$ 690,000	764,000
Non-compete agreements
Intangible assets, net
Weighted Average Amortization period	4 years
Gross Carrying Amount	$ 962,000	981,000
Accumulated Amortization	(738,000)	(693,000)
Net Carrying Amount	$ 224,000	$ 288,000