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Income Taxes - Deferred Tax Assets By Location (Details) (USD $) In Thousands, unless otherwise specified | Apr. 26, 2014 | Apr. 27, 2013
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Deferred Tax Assets By Location [Line Items] |  |
Deferred tax assets, gross | $ 21,931 | $ 22,188
GERMANY |  |
Deferred Tax Assets By Location [Line Items] |  |
Deferred tax assets, gross | 75 | 0
HONG KONG |  |
Deferred Tax Assets By Location [Line Items] |  |
Deferred tax assets, gross | 8 | 0
BELGIUM |  |
Deferred Tax Assets By Location [Line Items] |  |
Deferred tax assets, gross | 683 | 0
International |  |
Deferred Tax Assets By Location [Line Items] |  |
Deferred tax assets, gross | $ 766 | $ 0

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Deferred Tax Asset -URI http://asc.fasb.org/extlink&oid=6510090 + Details
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