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Major Customers and Foreign Sales (Details) - Customer | 6 Months Ended
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Mar. 31, 2016 | Mar. 31, 2015
Revenue, Major Customer [Line Items] |  |
Revenue, number of major customers | 0 | 1
Revenues, percentage | 100.00% | 100.00%
United States |  |
Revenue, Major Customer [Line Items] |  |
Revenues, percentage | 23.00% | 17.00%
Other |  |
Revenue, Major Customer [Line Items] |  |
Revenues, percentage | 3.00% | 3.00%
Total North America |  |
Revenue, Major Customer [Line Items] |  |
Revenues, percentage | 26.00% | 20.00%
China |  |
Revenue, Major Customer [Line Items] |  |
Revenues, percentage | 22.00% | 28.00%
Taiwan |  |
Revenue, Major Customer [Line Items] |  |
Revenues, percentage | 12.00% | 18.00%
Other |  |
Revenue, Major Customer [Line Items] |  |
Revenues, percentage | 22.00% | 16.00%
Total Asia |  |
Revenue, Major Customer [Line Items] |  |
Revenues, percentage | 56.00% | 62.00%
Total Europe |  |
Revenue, Major Customer [Line Items] |  |
Revenues, percentage | 18.00% | 18.00%
Net Revenues | Customer Concentration Risk | Customer Number One |  |
Revenue, Major Customer [Line Items] |  |
Concentration risk, percentage |  | 19.00%

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