PROPERTY AND EQUIPMENT - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Property, Plant and Equipment [Line Items]
Property and equipment at cost	$ 871	$ 871
Less: accumulated depreciation	(782)	(774)
Property and equipment, net	89	97
Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 496	496
Equipment \| Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life (in years)	3 years
Equipment \| Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life (in years)	15 years
Tooling
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 210	210
Tooling \| Minimum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life (in years)	2 years
Tooling \| Maximum
Property, Plant and Equipment [Line Items]
Property and equipment, useful life (in years)	5 years
Vehicles
Property, Plant and Equipment [Line Items]
Property and equipment, useful life (in years)	5 years
Property and equipment, gross	$ 41	41
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 124	$ 124

Amount of accumulated depreciation and amortization from plant, property, and equipment and right-of-use asset from finance lease.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 360
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-URI https://asc.fasb.org/1943274/2147482099/360-10-50-1

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Amount, before accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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