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Derivative Financial Instruments (Tables) | 6 Months Ended
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Oct. 27, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of Notional Amounts of Outstanding Derivative Positions | The foreign currency exchange contracts in aggregated notional amounts in place to exchange U.S. dollars at October 27, 2018 and April 28, 2018 were as follows:
| October 27, 2018 |  | April 28, 2018
| U.S. Dollars |  | Foreign Currency |  | U.S. Dollars |  | Foreign Currency
Foreign Currency Exchange Forward Contracts: |  |  |  |  |  |  |
U.S. Dollars/Australian Dollars | 3,857 |  |  | 5,304 |  |  | 1,081 |  |  | 1,400 |
U.S. Dollars/Canadian Dollars | 1,288 |  |  | 1,682 |  |  | 2,165 |  |  | 2,819 |
U.S. Dollars/British Pounds | 2,849 |  |  | 2,151 |  |  | 5,856 |  |  | 4,368 |
U.S. Dollars/Singapore Dollars | — |  |  | — |  |  | 236 |  |  | 312 |
U.S. Dollars/Euros | — |  |  | — |  |  | (854 | ) |  | (708 | )
U.S. Dollars/Swiss Franc | — |  |  | — |  |  | 41 |  |  | 40 |
U.S. Dollars/Malaysian Ringgit | 827 |  |  | 3,440 |  |  | — |  |  | — |

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- Definition Tabular disclosure of the notional amounts of outstanding derivative positions. + 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=84234895&loc=SL5579245-113959 + Details
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