Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Aug. 04, 2018	Jul. 29, 2017	Aug. 04, 2018	Jul. 29, 2017	Feb. 03, 2018
Income Tax [Line Items]
Income tax expense	$ 2,936	$ 5,583	$ 11,443	$ 3,670
Effective income tax rate	4.40%	(245.00%)	11.10%	(48.50%)
U.S. corporate income tax rate			21.00%		35.00%
Unrecognized tax benefits	$ 8,400		$ 8,400		$ 8,200
Tax expense and the effective tax rate, if recognized	6,800		6,800		$ 6,500
Exposures related to unrecognized tax benefits	$ 400		$ 400
Period of unrecognized tax benefits change			12 months

Income tax.

No definition available.

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Significant change in unrecognized tax benefits is reasonably possible period.

+ References

No definition available.

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

+ References

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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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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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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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