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Segment Information (Tables)
9 Months Ended
Sep. 30, 2025
Segment Reporting [Abstract]  
Schedule of Revenue by Geographic Region
Revenue by geographic region, is as follows:
 Three Months EndedNine Months Ended
September 30,September 30,
 2025202420252024
Japan$6,919 $7,062 $18,610 $17,741 
China1,422 2,246 4,564 14,951 
Taiwan191 192 543 708 
United States239 27 398 716 
$8,771 $9,527 $24,115 $34,116 
Schedule of Revenue from Significant Customers
The percentage of revenue attributable to our distributors, top five end customers, and individual distributors or end customers that represented 10% or more of revenue in at least one of the periods presented, is as follows:
 Three Months EndedNine Months Ended
September 30,September 30,
 2025202420252024
Distributors:
All distributors22 %36 %25 %52 %
Distributor A10 %19 %12 %37 %
Distributor B%11 %%%
End customers: 1
Top five end customers95 %93 %93 %88 %
End customer A76 %64 %74 %46 %
End customer B10 %12 %%24 %
End customer C— %11 %— %%

1End customers include customers who purchase directly from us, as well as customers who purchase our products indirectly through distributors.
Schedule of Accounts Receivable Percentage from Significant Customers
The following accounts represented 10% or more of total accounts receivable in at least one of the periods presented:
September 30,
2025
December 31,
2024
Account X70 %41 %
Account Y15 %17 %
Account Z%24 %