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Income Taxes - Deferred Tax Assets and Liabilities Current and Non Current (Details) - USD ($) $ in Thousands | Apr. 29, 2017 | Apr. 30, 2016
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Income Tax Disclosure [Abstract] |  |
Non-current assets | $ 11,292 | $ 9,437
Non-current liabilities | (836) | (754)
Deferred tax assets, net | $ 10,456 | $ 8,683

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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319 + Details
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