Quarterly Financial Data (Unaudited) - Summary of Company's Unaudited Quarterly Results (Parenthetical) (Detail) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Mar. 31, 2019 |
Mar. 31, 2019 |
Mar. 31, 2018 |
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| Loss from impairment of goodwill and intangible assets | $ 6,449 | $ 6,449 | $ 14,816 |
| Income tax benefit on goodwill and intangible assets impairment | 1,129 | ||
| Commercial Nuclear Utility Business [Member] | |||
| Loss from impairment of goodwill and intangible assets | $ 6,449 | ||
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- Definition Amount of income tax benefit pertaining to the loss recognized during the period from the impairment of goodwill and the impairment of the carrying amount of tangible and intangible assets, other than goodwill. 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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- Details
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