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Assets Held for Sale and Discontinued Operations - Cash Flow Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2019 | Mar. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
(Loss) income from discontinued operations, net of tax | $ (6,647) | $ 1,774 | $ (9,267) | $ 6,525
Provision for allowance for doubtful accounts, net |  |  | 1,141 | 48
Solar Segment | Discontinued Operations, Held-for-sale |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |
(Loss) income from discontinued operations, net of tax | $ (6,647) | $ 1,774 | (9,267) | 6,525
Depreciation and amortization |  |  | 287 | 324
Provision for allowance for doubtful accounts, net |  |  | 981 | 37
Purchases of property, plant and equipment |  |  | $ 96 | $ 220

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- Definition Amount of deprecation and amortization expense attributable to property, plant and equipment and intangible assets of discontinued operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760 + Details
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