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Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Loss (Tables) | 3 Months Ended
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Apr. 30, 2019
Equity [Abstract] |
Changes in Accumulated Other Comprehensive Loss by Component, Net of Tax | The following tables present the changes in “Accumulated other comprehensive loss,” by component, net of tax, for the three months ended April 30, 2019 and 2018:
|  | Three Months Ended April 30, 2019 |
|  |  |  |  |  | Unrealized Gains |  |  |  |  |
|  | Foreign |  |  | and (Losses) on |  |  |  |  |
|  | Currency |  |  | Available-for- |  |  |  |  |
|  | Translation |  |  | Sale Securities |  |  | Total |
Balance at beginning of period |  | $ | (26,925 | ) |  | $ | (178 | ) |  | $ | (27,103 | )
Other comprehensive income (loss) before reclassifications |  |  | (3,800 | ) |  |  | 179 |  |  |  | (3,621 | )
Amounts reclassified from accumulated other comprehensive income (loss) |  |  | — |  |  |  | 7 |  |  |  | 7 |
Net current-period other comprehensive income (loss) |  |  | (3,800 | ) |  |  | 186 |  |  |  | (3,614 | )
Balance at end of period |  | $ | (30,725 | ) |  | $ | 8 |  |  | $ | (30,717 | )
|  | Three Months Ended April 30, 2018 |
|  |  |  |  |  | Unrealized Gains |  |  |  |  |
|  | Foreign |  |  | and (Losses) on |  |  |  |  |
|  | Currency |  |  | Available-for- |  |  |  |  |
|  | Translation |  |  | Sale Securities |  |  | Total |
Balance at beginning of period |  | $ | (10,340 | ) |  | $ | (311 | ) |  | $ | (10,651 | )
Other comprehensive income (loss) before reclassifications |  |  | (7,969 | ) |  |  | (80 | ) |  |  | (8,049 | )
Amounts reclassified from accumulated other comprehensive income (loss) |  |  | — |  |  |  | (13 | ) |  |  | (13 | )
Net current-period other comprehensive income (loss) |  |  | (7,969 | ) |  |  | (93 | ) |  |  | (8,062 | )
Balance at end of period |  | $ | (18,309 | ) |  | $ | (404 | ) |  | $ | (18,713 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 + Details
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