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Derivative Financial Instruments (Details) In Thousands, unless otherwise specified | Jan. 25, 2014 Recurring Basis Level 2 USD ($) | Apr. 27, 2013 Recurring Basis Level 2 USD ($) | Jan. 25, 2014 U.S. Dollars/Australian Dollars USD ($) | Jan. 25, 2014 U.S. Dollars/Australian Dollars AUD | Apr. 27, 2013 U.S. Dollars/Australian Dollars USD ($) | Apr. 27, 2013 U.S. Dollars/Australian Dollars AUD | Jan. 25, 2014 U.S. Dollars/Canadian Dollars USD ($) | Jan. 25, 2014 U.S. Dollars/Canadian Dollars CAD | Apr. 27, 2013 U.S. Dollars/Canadian Dollars USD ($) | Apr. 27, 2013 U.S. Dollars/Canadian Dollars CAD | Jan. 25, 2014 U.S. Dollars/British Pounds USD ($) | Jan. 25, 2014 U.S. Dollars/British Pounds GBP (£) | Apr. 27, 2013 U.S. Dollars/British Pounds USD ($) | Apr. 27, 2013 U.S. Dollars/British Pounds GBP (£) | Jan. 25, 2014 U.S. Dollars/Euros USD ($) | Jan. 25, 2014 U.S. Dollars/Euros EUR (€) | Apr. 27, 2013 U.S. Dollars/Euros USD ($) | Apr. 27, 2013 U.S. Dollars/Euros EUR (€)
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Derivative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign Currency Exchange Forward Contracts: |  |  | $ 3,818 | 4,127 | $ 2,944 | 2,873 | $ 35 | 37 | $ 492 | 492 | $ 1,277 | £ 781 | $ 1,554 | £ 1,005 | $ 1,789 | € 1,334 | $ 153 | € 114
Fair value of foreign currency exchange forward contracts | $ 201 | $ 7 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Details
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- Definition Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into. + References No definition available. + Details
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