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Related Party Transactions (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2015 | Jun. 30, 2017
Related Party Transaction [Line Items] |  |  |  |  |
Gain on sale of other assets |  | $ 0 | $ 2,576 | $ 0 |
Kingstone Holding Company |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Ownership percentage |  |  |  | 15.00% |
Exclusive Sales and Service Rights in Solar Ion Implant Equipment |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Proceeds from license fees received | $ 4,900 |  |  |  |
Gain on sale of other assets |  |  | $ 2,600 |  |
SoLayTec, B.V. |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Due to related party |  |  |  |  | $ 2,400

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- Definition Cash received from licensees for license fees during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3536-108585 + Details
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