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Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013
Schedule of Equity Method Investments [Line Items] |  |
Purchase obligation | $ 10.7 | $ 12.3
Revenue from Grants | 3.6 |
Grant revenue commitment to the project, by July 2014 | $ 6.1 |
Kingstone Holding Company [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
Equity method investment, ownership percentage | 55.00% |
Kingstone Semiconductor Company Ltd [Member] |  |
Schedule of Equity Method Investments [Line Items] |  |
Percentage of voting interest of acquiree owned subsidiary | 100.00% |

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