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Discontinued Operations and Disposals - Operating Results of Discontinued Operations (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Net loss | $ (11,151) | $ (665) | $ (11,816) | $ (8,297)
Tempress and SoLayTec | Discontinued Operations, Held-for-sale |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
Revenues, net of returns and allowances |  |  | 7,442 | 25,139
Cost of sales |  |  | 5,969 | 23,669
Gross profit |  |  | 1,473 | 1,470
Selling, general and administrative |  |  | 1,814 | 8,857
Research, development and engineering |  |  | 540 | 3,039
Restructuring charges |  |  | 37 | 567
Operating loss |  |  | (918) | (10,993)
(Loss) gain on sale of subsidiary |  |  | (10,916) | 1,614
Interest expense and other, net |  |  | (29) | (121)
Loss from discontinued operations before income taxes |  |  | (11,863) | (9,500)
Income benefit |  |  | (47) | (1,203)
Net loss |  |  | $ (11,816) | $ (8,297)

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