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Collaboration and License Agreement (Details) - USD ($) $ in Millions | Mar. 31, 2016 | Mar. 11, 2016
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Business Acquisition [Line Items] |  |
Equity Method Investment, Ownership Percentage |  | 19.90%
Subsidiary, Ownership Interest by Parent |  | 80.10%
Hitachi Chemical Co., LTD [Member] |  |
Business Acquisition [Line Items] |  |
Equity Method Investment, Ownership Percentage |  | 21.00%
Recorded Unconditional Purchase Obligation | $ 20.5 | $ 19.4
Unrecorded Unconditional Purchase Obligation, Maximum Quantity |  | 15.0
PCT Allendale, LLC [Member] |  |
Business Acquisition [Line Items] |  |
Purchase Obligation |  | $ 4.4

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