Income Taxes - Income Tax (Benefit) Provision for Continuing Operations Computed Using Federal Statutory Income Tax Rate (Detail) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Jan. 31, 2018 |
Jul. 31, 2016 |
Jan. 31, 2018 |
Jan. 31, 2017 |
Jan. 31, 2016 |
|
| Income Tax Disclosure [Abstract] | |||||
| Statutory U.S. federal tax rate | $ 415 | $ (19,816) | $ (17,066) | ||
| State taxes, net of federal tax benefit | (4) | 32 | 33 | ||
| Income not benefitted | 481 | 10,679 | 15,712 | ||
| Non-deductible stock compensation expense | 158 | 266 | 3 | ||
| Other non-deductible items | (46) | 252 | (31) | ||
| Innovative technology and development incentive | (189) | ||||
| Foreign tax rate differential | (2,014) | 3,770 | 816 | ||
| Outside basis difference in foreign subsidiaries | (14,675) | 14,675 | |||
| Goodwill impairment | 5,044 | ||||
| Tax Reform Act | 3,882 | ||||
| Current fiscal year impact of FIN 48 | (469) | (271) | (307) | ||
| Income tax (benefit) provision | $ (14,700) | $ 14,600 | $ (12,272) | $ 14,631 | $ (1,029) |
| X | ||||||||||
- Definition Income tax rate reconciliation, nondeductible expense (interest), other. No definition available.
|
| X | ||||||||||
- Definition Income tax reconciliation book gains (losses) not currently benefited. No definition available.
|
| X | ||||||||||
- Definition Income tax reconciliation goodwill impairment losses. No definition available.
|
| X | ||||||||||
- Definition Income tax reconciliation impact of uncertain tax positions. No definition available.
|
| X | ||||||||||
- Definition Income tax reconciliation innovative technology and development incentive. No definition available.
|
| X | ||||||||||
- Definition Income tax reconciliation outside basis difference in foreign subsidiaries. No definition available.
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible equity-based compensation costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|