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Goodwill - Additional Information (Detail)	12 Months Ended
Goodwill - Additional Information (Detail)	Jan. 31, 2023 USD ($) Segment	Jan. 31, 2022 USD ($)	Jan. 31, 2021 USD ($)
Finite Lived Intangible Assets [Line Items]
Number of reportable segments \| Segment	1
Goodwill	$ 303,625,000	$ 303,625,000
Goodwill impairment	$ 0	$ 0	$ 0

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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