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Property and Equipment (Tables)
 9 Months Ended
Sep. 30, 2023
Property, Plant and Equipment [Abstract]  
Schedule of Property and Equipment Property and equipment are stated at cost and depreciated using the straight-line method over the estimated useful lives of the related assets and consist of the following (in thousands):
September 30,
2023		December 31,
2022
Equipment (useful life 3 to 15 years)
$1,061 $1,061 
Tooling (useful life 2 to 5 years)
190 190 
Leasehold improvements (the shorter of useful life or lease life)141 141 
Projects in progress27 — 
Property and equipment at cost1,419 1,392 
Less: accumulated depreciation(1,340)(1,316)
Property and equipment, net$79 $76