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Collaboration and License Agreement (Details) - USD ($)
$ in Millions
Jun. 30, 2016
Mar. 31, 2016
Mar. 11, 2016
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]      
Contract Receivable     $ 5.6
Proceeds from License Fees Received $ 4.4    
PCT Allendale, LLC [Member]      
Business Acquisition [Line Items]      
Purchase Obligation     $ 4.4