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Accumulated Other Comprehensive Income - Schedule of Component of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands | Apr. 30, 2026 | Jan. 31, 2026 | Apr. 30, 2025
--- | --- | --- | ---
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Foreign currency translation adjustments | $ 112,036 | $ 113,972 | $ 100,115
Available-for-sale securities | 199 | 196 | 185
Cash flow hedges | 31 | 0 | (1,067)
Unrecognized prior service cost related to defined benefit pension plan | (44) | (68) | (109)
Net actuarial loss related to defined benefit pension plan | (3,486) | (3,486) | (1,631)
Total accumulated other comprehensive income | $ 108,736 | $ 110,614 | $ 97,493

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