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Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Income (Loss) (Tables) | 6 Months Ended
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Jul. 31, 2015
Changes in Accumulated Other Comprehensive Income (Loss) by Component, Net of Tax | The following tables present the changes in accumulated other comprehensive income (loss), by component, net of tax, for the three and six months ended July 31, 2015 and 2014, respectively:
|  | Three Months Ended July 31, 2015 |  |  | Six Months Ended July 31, 2015 |
|  | Foreign Currency Translation |  |  | Unrealized Gains and (Losses) on Available-for- Sale Securities |  |  | Total |  |  | Foreign Currency Translation |  |  | Unrealized Gains and (Losses) on Available-for- Sale Securities |  |  | Total |
Balance at beginning of period |  | $ | (12,371 | ) |  | $ | 51 |  |  | $ | (12,320 | ) |  | $ | (15,516 | ) |  | $ | 89 |  |  | $ | (15,427 | )
Other comprehensive income (loss) before reclassifications |  |  | 2,353 |  |  |  | (64 | ) |  |  | 2,289 |  |  |  | 5,498 |  |  |  | (105 | ) |  |  | 5,393 |
Amounts reclassified from accumulated other comprehensive income (loss) |  |  | — |  |  |  | 39 |  |  |  | 39 |  |  |  | — |  |  |  | 42 |  |  |  | 42 |
Net current-period other comprehensive income (loss) |  |  | 2,353 |  |  |  | (25 | ) |  |  | 2,328 |  |  |  | 5,498 |  |  |  | (63 | ) |  |  | 5,435 |
Balance at end of period |  | $ | (10,018 | ) |  | $ | 26 |  |  | $ | (9,992 | ) |  | $ | (10,018 | ) |  | $ | 26 |  |  | $ | (9,992 | )
|  | Three Months Ended July 31, 2014 |  |  | Six Months Ended July 31, 2014 |
|  | Foreign Currency Translation |  |  | Unrealized Gains and (Losses) on Available-for- Sale Securities |  |  | Total |  |  | Foreign Currency Translation |  |  | Unrealized Gains and (Losses) on Available-for- Sale Securities |  |  | Total |
Balance at beginning of period |  | $ | 1,480 |  |  | $ | 240 |  |  | $ | 1,720 |  |  | $ | (1,388 | ) |  | $ | 420 |  |  | $ | (968 | )
Other comprehensive income (loss) before reclassifications |  |  | 828 |  |  |  | (263 | ) |  |  | 565 |  |  |  | 3,696 |  |  |  | (513 | ) |  |  | 3,183 |
Amounts reclassified from accumulated other comprehensive income (loss) |  |  | — |  |  |  | 101 |  |  |  | 101 |  |  |  | — |  |  |  | 171 |  |  |  | 171 |
Net current-period other comprehensive income (loss) |  |  | 828 |  |  |  | (162 | ) |  |  | 666 |  |  |  | 3,696 |  |  |  | (342 | ) |  |  | 3,354 |
Balance at end of period |  | $ | 2,308 |  |  | $ | 78 |  |  | $ | 2,386 |  |  | $ | 2,308 |  |  | $ | 78 |  |  | $ | 2,386 |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 + Details
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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration