Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Deferred tax assets:
Accounts receivable, due to allowance for doubtful accounts	$ 70	$ 112
Inventories	1,781	2,188
Operating loss carryforwards	9,078	5,772
Stock-based compensation expense	388	436
Property and equipment, due to difference in depreciation	74	74
Research and development tax credit carryforwards	5,852	5,852
Foreign tax credit carryforwards	2,345	2,345
State tax credit carryforwards	2,456	2,962
Capitalized research and development	3,856	5,570
Warranty reserve	138	130
Accrued expenses	457	333
Intangible assets	210	0
Lease liability	908	244
Gross deferred tax assets	27,613	26,018
Less valuation allowance	(23,890)	(23,179)
Total deferred tax assets	3,723	2,839
Deferred tax liabilities:
Property and equipment, due to differences in depreciation	(2,218)	(2,430)
Right of use asset	(908)	(267)
Total deferred tax liabilities	(3,126)	(2,697)
Net deferred tax asset	597	142
Deferred income tax asset	602	157
Deferred income tax liability	$ (5)	$ (15)

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