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Income Taxes - Differences Between Income Tax Expense at Federal Income Tax Rate and Effective Income Tax Rate (Detail)	3 Months Ended								12 Months Ended
	Apr. 30, 2017	Jan. 29, 2017	Oct. 30, 2016	Jul. 31, 2016	May 01, 2016	Jan. 31, 2016	Nov. 01, 2015	Aug. 02, 2015	Apr. 30, 2017	May 01, 2016	May 03, 2015
Income Tax Disclosure [Abstract]
federal income tax rate									34.00%	34.00%	34.00%
tax effects of Chinese foreign exchange gains									1.60%	4.40%	0.30%
change in valuation allowance									(0.20%)	(1.20%)	(0.20%)
change in North Carolina income tax rates										0.70%
reversal of foreign uncertain income tax position									(11.60%)
other									0.90%	1.40%	0.20%
Effective income tax rate	11.10%	9.20%	37.50%	37.80%	49.80%	32.30%	38.60%	36.50%	24.70%	39.30%	34.30%

X

- Definition

Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign exchange gain or loss.

+ References

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

+ References

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

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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