Quarterly Results of Operations-Unaudited - Quarterly Results of Operations (Parenthetical) (Detail) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended |
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Jan. 31, 2016 |
Jan. 31, 2016 |
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| Quarterly Financial Information Disclosure [Abstract] | ||
| Loss on impairment of TLL, LLC net assets | $ 21,500 | $ 21,464 |
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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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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