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Major Customers and Foreign Sales (Tables) | 12 Months Ended
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Sep. 30, 2018
Major Customers and Foreign Sales [Abstract] |
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area | Our net revenues for 2018, 2017 and 2016 were to customers in the following geographic regions:
| Years Ended September 30,
| 2018 |  | 2017 |  | 2016
United States | 12 | % |  | 11 | % |  | 17 | %
Other | 2 | % |  | 1 | % |  | 3 | %
Total Americas | 14 | % |  | 12 | % |  | 20 | %
Taiwan | 7 | % |  | 12 | % |  | 15 | %
Malaysia | 6 | % |  | 9 | % |  | 18 | %
China | 53 | % |  | 47 | % |  | 28 | %
Other | 4 | % |  | 7 | % |  | 7 | %
Total Asia | 70 | % |  | 75 | % |  | 68 | %
Germany | 7 | % |  | 5 | % |  | 3 | %
Other | 9 | % |  | 8 | % |  | 9 | %
Total Europe | 16 | % |  | 13 | % |  | 12 | %
| 100 | % |  | 100 | % |  | 100 | %

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- Definition Tabular disclosure of the names of foreign countries from which revenue is material and the amount of revenue from external customers attributed to those countries. 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 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e9038-108599 + Details
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