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Income Taxes - Income Taxes Paid - Narrative (Detail) - USD ($) $ in Millions	12 Months Ended
	Apr. 30, 2017	May 01, 2016	May 03, 2015
Income Tax Disclosure [Abstract]
Income tax payments, net of income tax refunds	$ 5.5	$ 6.7	$ 4.8

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- References

No definition available.

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- Definition

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586

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