Award Grant, Vested and Forfeiture Transactions (Parenthetical) (Detail) $ in Millions	3 Months Ended
Apr. 30, 2022 USD ($)
Restricted Stock Issuances
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based compensation awards vested total intrinsic value	$ 0.5

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.

No definition available.

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