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Accumulated Other Comprehensive Income (Tables) | 6 Months Ended
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Jul. 31, 2021
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract] |
Schedule of Component of Accumulated Other Comprehensive Income (Loss) | The accumulated balances at July 31, 2021 and 2020, and January 31, 2021, related to each component of accumulated other comprehensive income (loss) are as follows (in thousands):
|  | July 31, 2021 |  |  | January 31, 2021 |  |  | July 31, 2020 |
Foreign currency translation adjustments |  | $ | 91,058 |  |  | $ | 93,166 |  |  | $ | 86,408 |
Available-for-sale securities |  |  | 149 |  |  |  | 124 |  |  |  | 92 |
Unrecognized prior service cost related to defined benefit pension plan |  |  | (315 | ) |  |  | (344 | ) |  |  | (339 | )
Net actuarial loss related to defined benefit pension plan |  |  | (406 | ) |  |  | (406 | ) |  |  | (52 | )
Total accumulated other comprehensive income |  | $ | 90,486 |  |  | $ | 92,540 |  |  | $ | 86,109 |

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