Fair value asset level 1 to level 2 transfers amount.

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Fair value asset level 2 to level 1 transfers amount.

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Fair value liabilities level 1 to level 2 transfer amount.

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Fair value liabilities level 2 to level 1 transfer amount.

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Fair value measurement valuation processes description.

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Impairment charges or observable price changes related to venture capital funds.

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Investment in venture capital funds.

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Amount of impairment loss for asset. Includes, but is not limited to, tangible and intangible assets and goodwill.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of transfers of financial instrument classified as a liability into level 3 of the fair value hierarchy.

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Amount of transfers of financial instrument classified as a liability out of level 3 of the fair value hierarchy.

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Amount of transfer of financial instrument classified as an asset into level 3 of the fair value hierarchy.

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Fair Value Measurements - Additional Information (Details) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
	Jul. 31, 2025	Jul. 31, 2026	Jan. 31, 2026
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Transfers into level 1 to level 2, assets		$ 0
Transfers into level 2 to level 1, assets		0
Transfers into level 1 to level 2, liabilities		0
Transfers into level 2 to level 1, liabilities		0
Transfers into level 3, assets		0
Transfers out of level 3, assets		0
Transfers into level 3, liabilities		0
Transfers out of level 3, liabilities		0
Investment in venture capital funds		1,100,000	$ 17,500,000
Non-cash impairment charge	$ 400,000
Impairment charges or observable price changes related venture funds		$ 0
Short-term investment
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Fair value, investment		The fair value of the short-term investment, which is a guaranteed investment certificate, is based on its purchase price plus one half of one percent calculated annually.