Discontinued Operations - PCT Segment Narrative (Details) - PCT Segment [Member] - Discontinued Operations [Member] - USD ($) $ in Thousands		1 Months Ended	3 Months Ended
	May 18, 2017	Mar. 31, 2017	Sep. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Subsidiary, Ownership Interest by Parent	80.10%
Transaction and retention costs	$ 6,919
Payments to Employees			$ 4,300
Payment for Retention Agreement in Connection with Sale, First Retention Payment, Percent			50.00%
Payment for Retention Agreement in Connection with Sale, Second Retention Payment, Percent			50.00%
Hitachi Chemical Co., LTD [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [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
Proceeds From Licensing Agreements, Escrow Amount	$ 5,000