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Payment for Retention Agreement in Connection with Sale, First Retention Payment, Percent

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Payment for Retention Agreement in Connection with Sale, Second Retention Payment, Percent

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Purchase Agreement, Potential Future Milestone Payment

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Related Party Transaction, Payment for Retention Agreement in Connection with Sale, Second Retention Payment

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Related Party Transaction, Payment for Retention Agreement in Connection with Sale, Third Retention Payment, Percentage of Milestone Payment

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Subsidiary, Ownership Interest by Parent

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Amount billed to customers under long-term contracts or programs but not paid. Excludes amounts due that have been withheld because of retainage provisions in a contract.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Payments of cash to employees, including wages and salaries, during the current period.

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Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

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Amount of the recorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

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Maximum number of units that may be acquired, in connection with an unconditional purchase obligation that has not been recognized for financial reporting purposes.

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Collaboration and License Agreement (Details) - USD ($) $ in Thousands				1 Months Ended			3 Months Ended	12 Months Ended
	May 18, 2018	May 18, 2017	Mar. 11, 2016	Jul. 31, 2017	Jun. 30, 2017	Mar. 31, 2017	Mar. 31, 2018	May 18, 2018
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage			19.90%
Hitachi Chemical Co., LTD [Member]
Business Acquisition [Line Items]
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] \| 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%		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
Discontinued Operations [Member] \| PCT Segment [Member] \| Forecast [Member]
Business Acquisition [Line Items]
Retention Payments, Second Retention Payment, Percent	50.00%