Assets Dispositions - Additional Information (Detail) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Jun. 24, 2019 |
Mar. 31, 2019 |
Mar. 31, 2020 |
Mar. 31, 2019 |
Mar. 31, 2018 |
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| Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] | |||||
| Impairment loss | $ 6,449 | $ 6,449 | $ 14,816 | ||
| Proceeds from sale of subsidiary | $ 602 | ||||
| Loss on sale of Energy Steel & Supply Co. | 181 | ||||
| Westinghouse Electric Company [Member] | |||||
| Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] | |||||
| Bad debt charge | 98 | ||||
| Inventory write down | 338 | ||||
| Energy Steel [Member] | |||||
| Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items] | |||||
| Proceeds from sale of subsidiary | $ 602 | ||||
| Working capital adjustment determination period | 90 days | ||||
| Net accounts receivable | $ 202 | ||||
| Loss on sale of Energy Steel & Supply Co. | $ 181 | ||||
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- Definition The period in which the working capital adjustment related to the sale of the subsidiary is determined and finalized between the buyer and seller. No definition available.
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- Definition The amount of the net accounts receivable assigned from the disposal group, including discontinued operations, to the parent company. No definition available.
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- Definition Write off of trade accounts receivable. No definition available.
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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of gain (loss) on sale or disposal of equity in securities of subsidiaries. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition 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. No definition available.
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- Definition Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The cash inflow associated with the deconsolidation of a previously consolidated subsidiary or the sale of investment in consolidated subsidiaries (generally greater than 50 percent). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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