Income Taxes - Narrative (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jul. 31, 2021	Aug. 01, 2020	Jul. 31, 2021	Aug. 01, 2020
Income Taxes
Income tax expense	$ 3,009	$ 18,879	$ 44,733	$ 17,456
Effective income tax rate	1.30%	16.10%	11.10%	15.50%
Unrecognized tax benefits	$ 8,900		$ 8,900
Tax expense and the effective tax rate, if recognized	8,100		8,100
Exposures related to unrecognized tax benefits	$ 6,200		$ 6,200
Period of unrecognized tax benefits change			12 months

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Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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