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Collaboration and License Agreement (Details) - USD ($) $ in Thousands |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
May 18, 2017 | Jul. 31, 2017 | Mar. 31, 2017 | Sep. 30, 2017 | Sep. 30, 2016 | May 18, 2018 | Mar. 11, 2016
Business Acquisition [Line Items] |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  | 19.90%
Hitachi Chemical Co., LTD [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  | 21.00%
Recorded Unconditional Purchase Obligation |  |  |  |  |  |  | $ 19,400
Unrecorded Unconditional Purchase Obligation, Maximum Quantity |  |  |  |  |  |  | 15,000
PCT Allendale, LLC [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Contract Receivable |  |  |  |  |  |  | $ 5,600
PCT Allendale, LLC [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Purchase Obligation |  |  |  |  |  |  | $ 4,400
Minimum [Member] | PCT Allendale, LLC [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Length of Contract for Royalty Payments from Revenue Generated in Asia |  |  |  |  | 10 years |  |
Director [Member] | Robert A. Preti [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Related Party Transaction, Payment for Retention Agreement in Connection with Sale, First Retention Payment | $ 1,900 |  |  |  |  |  |
Director [Member] | Scenario, Forecast [Member] | Robert A. Preti [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Related Party Transaction, Payment for Retention Agreement in Connection with Sale, Second Retention Payment |  |  |  |  |  | $ 1,900 |
Related Party Transaction, Payment for Retention Agreement in Connection with Sale, Third Retention Payment, Percentage of Milestone Payment |  |  |  |  |  | 5.00% |
Discontinued Operations [Member] | PCT Segment [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Subsidiary, Ownership Interest by Parent | 80.10% |  |  |  |  |  |
Transaction Costs Related to Sale | $ 6,919 |  |  |  |  |  |
Payments to Employees |  |  |  | $ (4,300) |  |  |
Retention Payments, First Retention Payment, Percent |  |  |  | 50.00% |  |  |
Retention Payments, Second Retention Payment, Percent |  |  |  | 50.00% |  |  |
Discontinued Operations [Member] | PCT Segment [Member] | Hitachi Chemical Co., LTD [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Purchase Agreement, Additional Consideration | 4,400 |  |  |  |  |  |
Purchase Agreement, Potential Future Milestone Payment | 5,000 |  |  |  |  |  |
Cumulative Revenue Threshold for Receiving Milestone Payment | 125,000 |  |  |  |  |  |
Proceeds From Licensing Agreements, Initial Payment |  |  | $ 5,000 |  |  |  |
Proceeds From Licensing Agreements, Closing Payments | 65,000 | $ 4,400 |  |  |  |  |
Proceeds From Licensing Agreements, Escrow Amount | 5,000 |  |  |  |  |  |
Discontinued Operations [Member] | PCT Segment [Member] | PCT Allendale, LLC [Member] | Hitachi Chemical Co., LTD [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Purchase Agreement, Aggregate Purchase Price | $ 75,000 |  |  |  |  |  |

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