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Income Taxes - Income Taxes Paid - Narrative (Detail) - USD ($) $ in Millions | 12 Months Ended
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May. 03, 2015 | Apr. 27, 2014 | Apr. 28, 2013
Income Tax Disclosure [Abstract] |  |  |
Income tax payments, net of income tax refunds | $ 4.8 | $ 3.0 | $ 2.8

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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 + Details
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