Derivatives (Details) (USD $)	3 Months Ended
Jul. 26, 2013	Jul. 27, 2012
Derivatives [Abstract]
Foreign Currency Transaction Loss, before Tax	$ 130,695
Foreign Currency Transaction Gain, before Tax		$ 67,348

Aggregate realized and unrealized gain on foreign currency transactions included in net income. Includes gain on a foreign currency forward exchange contract. Does not include foreign currency transactions designated as hedges of net investment in a foreign entity or intercompany foreign currency transactions that are of a long-term nature. Gross of tax effect.

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Aggregate realized and unrealized loss on foreign currency transactions included in net income. Includes loss on a foreign currency forward exchange contract. Does not include foreign currency transactions designated as hedges of net investment in a foreign entity or intercompany foreign currency transactions that are of a long-term nature. Gross of tax effect.

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