Accumulated Other Comprehensive Loss - Schedule of Changes in Components of Accumulated Other Comprehensive Loss (Detail) $ in Thousands |
6 Months Ended |
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Jul. 31, 2018
USD ($)
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| Accumulated Other Comprehensive Income (Loss) [Line Items] | |
| Beginning balance | $ (5,434) |
| Other comprehensive income (loss) | 1,413 |
| Ending balance | (4,021) |
| Foreign Currency Translation Adjustment [Member] | |
| Accumulated Other Comprehensive Income (Loss) [Line Items] | |
| Beginning balance | (5,380) |
| Other comprehensive income (loss) | 1,431 |
| Ending balance | (3,949) |
| Changes in Fair Value of Available-for-Sale Investments [Member] | |
| Accumulated Other Comprehensive Income (Loss) [Line Items] | |
| Beginning balance | (54) |
| Other comprehensive income (loss) | (18) |
| Ending balance | $ (72) |
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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 Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after tax and reclassification adjustments of other comprehensive income (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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