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Income Taxes - Effective Income Tax Rate - Narrative (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 02, 2020	Jan. 27, 2019	Feb. 02, 2020	Jan. 27, 2019
Income Tax Disclosure [Abstract]
Income taxes	$ (973)	$ 1,225	$ 2,607	$ 3,407
Effective income tax rate			142.80%	32.50%

X

- Definition

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

+ References

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (h)
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-Publisher FASB
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