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Collaboration and License Agreement (Details) - USD ($)
3 Months Ended 9 Months Ended
Mar. 16, 2017
Jun. 30, 2017
Mar. 31, 2017
Mar. 31, 2016
Sep. 30, 2016
Mar. 11, 2016
Business Acquisition [Line Items]            
Equity Method Investment, Ownership Percentage           19.90%
Subsidiary, Ownership Interest by Parent 80.10%         80.10%
Proceeds From Licensing Agreements, Milestone Payments     $ (5,000,000) $ 0    
Hitachi Chemical Co., LTD [Member]            
Business Acquisition [Line Items]            
Equity Method Investment, Ownership Percentage           21.00%
Recorded Unconditional Purchase Obligation       $ 20,500,000   $ 19,400,000
Unrecorded Unconditional Purchase Obligation, Maximum Quantity           15,000,000
Proceeds From Licensing Agreements, Initial Payment $ 5,000,000   5,000,000      
Proceeds From Licensing Agreements, Milestone Payments 5,000,000   5,000,000      
Cumulative Revenue Threshold for Receiving Milestone Payment     125,000,000      
PCT Allendale, LLC [Member]            
Business Acquisition [Line Items]            
Contract Receivable           $ 5,600,000
PCT Allendale, LLC [Member]            
Business Acquisition [Line Items]            
Purchase Obligation           $ 4,400,000
PCT Allendale, LLC [Member] | Hitachi Chemical Co., LTD [Member]            
Business Acquisition [Line Items]            
Proceeds From Licensing Agreements 75,000,000   $ 75,000,000      
Cumulative Revenue Threshold for Receiving Milestone Payment $ 125,000,000          
Minimum [Member] | PCT Allendale, LLC [Member]            
Business Acquisition [Line Items]            
Length of Contract for Royalty Payments from Revenue Generated in Asia         10 years  
Scenario, Forecast [Member] | Hitachi Chemical Co., LTD [Member]            
Business Acquisition [Line Items]            
Proceeds From Licensing Agreements   $ 5,000,000        
Proceeds From Licensing Agreements, Closing Payments   65,000,000        
Director [Member] | Scenario, Forecast [Member] | Robert A. Preti [Member]            
Business Acquisition [Line Items]            
Related Party Transaction, Payment for Retention Agreement in Connection with Sale, First Retention Payment   1,375,000        
Related Party Transaction, Payment for Retention Agreement in Connection with Sale, Second Retention Payment   $ 1,375,000        
Related Party Transaction, Payment for Retention Agreement in Connection with Sale, Third Retention Payment, Percentage of Milestone Payment   5.00%