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Capital Stock - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions |  | 3 Months Ended |
--- | --- | --- | ---
May 27, 2022 | Apr. 30, 2023 | Jan. 31, 2023
Class Of Stock [Line Items] |  |  |
Preference shares, shares authorized |  | 20,000,000 | 20,000,000
Preference shares, par value |  | $ 0.00045 | $ 0.00045
Preference shares, shares issued |  | 0 | 0
Preference shares, shares outstanding |  | 0 | 0
Stock Repurchase Program [Member] |  |  |
Class Of Stock [Line Items] |  |  |
Stock repurchase program, authorization date | May 27, 2022 |  |
Stock repurchased, shares |  | 0 |
Stock repurchase program, extended expiration period | 12 months |  |
Stock repurchase program, extended expiration date | Jun. 30, 2023 |  |
Amount available under stock repurchase program |  | $ 49.0 |

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