Income Taxes - Narrative (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Aug. 01, 2020	Aug. 03, 2019	Aug. 01, 2020	Aug. 03, 2019
Income Taxes
Income tax expense	$ 18,879	$ 16,665	$ 17,456	$ 28,458
Effective income tax rate	16.10%	20.70%	15.50%	22.20%
Unrecognized tax benefits	$ 8,700		$ 8,700
Tax expense and the effective tax rate, if recognized	7,900		7,900
Exposures related to unrecognized tax benefits	$ 6,300		$ 6,300
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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