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Commitments and Contingencies Development Project (Details) (USD $) | 12 Months Ended
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Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2011
Schedule of Equity Method Investments [Line Items] |  |  |
First portion of grant funds received for the development project | $ 2,600,000 |  |
Customer funding to offset costs incurred | 1,865,000 | 1,029,000 | 1,578,000
Grant revenue commitment to project | $ 6,100,000 |  |
Kingstone Holding Company |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity method investment, ownership percentage | 55.00% |  |
Kingstone Semiconductor Company Ltd |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Percentage of Voting Interest of Acquire Owned Subsidiary | 100.00% |  |

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