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Segment Information (Tables) | 12 Months Ended
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Dec. 31, 2020
Segment Reporting [Abstract] |
Schedule of Revenue by Geographic Region | Revenue by geographic region, was as follows:
| Year Ended December 31,
| 2020 |  | 2019 |  |
Japan | $ | 26,554 |  |  | $ | 53,628 |  |  |
China | 8,935 |  |  | 10,213 |  |  |
U.S. | 3,057 |  |  | 3,105 |  |  |
Taiwan | 1,668 |  |  | 1,597 |  |  |
Europe | 333 |  |  | 104 |  |  |
Korea | 308 |  |  | 108 |  |  |
| $ | 40,855 |  |  | $ | 68,755 |  |  |
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 more than 10% of revenue in at least one of the periods presented, is as follows:
| Year Ended December 31,
| 2020 |  | 2019 |  |
Distributors: |  |  |  |  |
All distributors | 49 | % |  | 44 | % |  |
Distributor A | 23 | % |  | 28 | % |  |
End Customers: 1 |  |  |  |  |
Top five end customers | 58 | % |  | 77 | % |  |
End customer A | 40 | % |  | 49 | % |  |
End customer B | 5 | % |  | 12 | % |  |
1 End customers include customers who purchase directly from us, as well as customers who purchase our products indirectly through distributors.
Schedule of Accounts Receivable Percentages from Significant Customers | Each of the following accounts represented 10% or more of total accounts receivable in at least one of the periods presented:
|  | December 31,
|  | 2020 |  | 2019
Account X |  | 39 | % |  | 42 | %
Account Y |  | 20 | % |  | 26 | %
Account Z |  | 7 | % |  | 24 | %

X
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X
- Definition Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer. + References No definition available. + Details
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- Definition Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e9038-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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