Equity Method Investments (Detail) $ in Thousands	3 Months Ended	6 Months Ended
Jul. 31, 2021 USD ($) item	Jul. 31, 2021 USD ($) item
Related Party Transaction [Line Items]
Share of equity method investments losses	$ 2,486	$ 4,581
Aspen LLC's
Related Party Transaction [Line Items]
Joint venture, percentage of ownership	50.00%	50.00%
Number of privately held limited companies \| item	3	3
Share of equity method investments losses	$ 2,500	$ 4,600
Aspen LLC's \| Prepaid expenses and other current assets \| Promissory notes receivable
Related Party Transaction [Line Items]
Contributed capital membership interest	$ 14,100	$ 14,100

Number of privately held limited companies.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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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.

+ References

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