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Capital Stock - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Apr. 30, 2024 | Jan. 31, 2024
Class Of Stock [Line Items] |  |
Preference shares, shares issued | 0 | 0
Preference shares, shares outstanding | 0 | 0
Share Repurchase Program [Member] |  |
Class Of Stock [Line Items] |  |
Stock repurchased, shares | 0 |
Amount available under stock repurchase program | $ 49.0 |
ESPP [Member] |  |
Class Of Stock [Line Items] |  |
Additional ordinary shares reserved for issuance | 506,506 |
ESPP [Member] | Scenario, plan automatically increased by the lessor of [Member] |  |
Class Of Stock [Line Items] |  |
Annual increase in ordinary shares for available for future issuance | 1,500,000 |
Annual shares increase for future issuance by percentage under 2012 employee stock purchase plan | 1.25% |

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