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Derivative Financial Instruments (Details) In Thousands, unless otherwise specified | Jan. 26, 2013 Recurring Basis Level 2 USD ($) | Apr. 28, 2012 Recurring Basis Level 2 USD ($) | Jan. 26, 2013 U.S. Dollars/Australian Dollars USD ($) | Jan. 26, 2013 U.S. Dollars/Australian Dollars AUD | Apr. 28, 2012 U.S. Dollars/Australian Dollars USD ($) | Apr. 28, 2012 U.S. Dollars/Australian Dollars AUD | Jan. 26, 2013 U.S. Dollars/Canadian Dollars USD ($) | Jan. 26, 2013 U.S. Dollars/Canadian Dollars CAD | Apr. 28, 2012 U.S. Dollars/Canadian Dollars USD ($) | Apr. 28, 2012 U.S. Dollars/Canadian Dollars CAD | Jan. 26, 2013 U.S. Dollars/British Pounds USD ($) | Jan. 26, 2013 U.S. Dollars/British Pounds CAD | Apr. 28, 2012 U.S. Dollars/British Pounds USD ($) | Apr. 28, 2012 U.S. Dollars/British Pounds CAD | Jan. 26, 2013 U.S. Dollars/Singapore Dollars USD ($) | Jan. 26, 2013 U.S. Dollars/Singapore Dollars SGD | Apr. 28, 2012 U.S. Dollars/Singapore Dollars USD ($) | Apr. 28, 2012 U.S. Dollars/Singapore Dollars SGD | Jan. 26, 2013 U.S. Dollars/Brazilian Reais USD ($) | Jan. 26, 2013 U.S. Dollars/Brazilian Reais BRL | Apr. 28, 2012 U.S. Dollars/Brazilian Reais USD ($) | Apr. 28, 2012 U.S. Dollars/Brazilian Reais BRL | Jan. 26, 2013 U.S. Dollars/Euros USD ($) | Jan. 26, 2013 U.S. Dollars/Euros EUR (€) | Apr. 28, 2012 U.S. Dollars/Euros USD ($) | Apr. 28, 2012 U.S. Dollars/Euros EUR (€)
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Derivative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign Currency Exchange Forward Contracts: |  |  | $ 6,496 | 6,329 | $ 3,315 | 3,269 | $ 492 | 492 | $ 870 | 868 | $ 244 | 151 | $ 0 | 0 | $ 0 | 0 | $ 96 | 121 | $ 0 | 0 | $ 242 | 436 | $ 0 | € 0 | $ 130 | € 99
Fair value of foreign currency exchange forward contracts | $ (60) | $ (95) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents contracts related to the exchange of different currencies, including foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into and existing as of the balance sheet date. + References No definition available. + Details
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- Definition Aggregate notional amount of all foreign currency derivatives not designated as hedging instruments. Notional amount refers to the number of currency units specified in the foreign currency derivative contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Notional Amount -URI http://asc.fasb.org/extlink&oid=6519104 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959 + Details
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