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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 (€)
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

X

- 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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X

- Details

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X

- 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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