Income Taxes - Schedule of Net Loss Before Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Apr. 30, 2021	Apr. 30, 2020	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Income Tax Disclosure [Abstract]
Domestic			$ (197,908)	$ (134,578)	$ (108,663)
Foreign			1,082	475	695
Net income (loss) before income taxes	$ 82,327	$ (30,041)	$ (196,826)	$ (134,103)	$ (107,968)

The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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- Definition

The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

+ References

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- Definition

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

+ References

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