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Segment Information (Tables)
9 Months Ended
Sep. 30, 2023
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,
 2023202220232022
China$8,777 $5,482 $20,906 $21,371 
Japan7,070 10,908 17,752 27,604 
Taiwan185 464 836 2,421 
United States— 648 109 1,736 
Korea— 50 — 50 
Europe— — — 76 
$16,032 $17,552 $39,603 $53,258 
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,
 2023202220232022
Distributors:
All distributors60 %57 %63 %61 %
Distributor A50 %29 %45 %33 %
Distributor B%23 %%16 %
End customers: 1
Top five end customers93 %83 %88 %79 %
End customer A40 %39 %37 %36 %
End customer B26 %15 %25 %13 %
End customer C20 %— %12 %— %
End customer D%12 %%%
End customer E— %13 %— %19 %

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,
2023
December 31,
2022
Account W62 %31 %
Account X27 %27 %
Account Y— %12 %
Account Z— %11 %