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Derivative Financial Instruments (Details) € in Thousands, £ in Thousands, SFr in Thousands, RM in Thousands, $ in Thousands, $ in Thousands, $ in Thousands | 9 Months Ended |  |
--- | --- | --- | ---
Feb. 01, 2020 USD ($) | Feb. 01, 2020 CAD ($) | Feb. 01, 2020 AUD ($) | Feb. 01, 2020 MYR (RM) | Feb. 01, 2020 EUR (€) | Feb. 01, 2020 CHF (SFr) | Feb. 01, 2020 GBP (£) | Apr. 27, 2019 USD ($) | Apr. 27, 2019 CAD ($) | Apr. 27, 2019 AUD ($) | Apr. 27, 2019 MYR (RM) | Apr. 27, 2019 EUR (€) | Apr. 27, 2019 CHF (SFr) | Apr. 27, 2019 GBP (£)
Derivative |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative term (months) | 13 months |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Dollars/Australian Dollars | Not Designated as Hedging Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency exchange forward contracts | $ 2,555 |  | $ 3,753 |  |  |  |  | $ 2,688 |  | $ 3,772 |  |  |  |
U.S. Dollars/Canadian Dollars | Not Designated as Hedging Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency exchange forward contracts | 750 | $ 998 |  |  |  |  |  | 625 | $ 821 |  |  |  |  |
U.S. Dollars/British Pounds | Not Designated as Hedging Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency exchange forward contracts | 5,618 |  |  |  |  |  | £ 4,386 | 3,547 |  |  |  |  |  | £ 2,680
U.S. Dollars/Euro | Not Designated as Hedging Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency exchange forward contracts | 3,755 |  |  |  | € 3,377 |  |  | 0 |  |  |  | € 0 |  |
U.S. Dollars/Swiss Franc | Not Designated as Hedging Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency exchange forward contracts | 207 |  |  |  |  | SFr 204 |  | 927 |  |  |  |  | SFr 925 |
U.S. Dollars/Malaysian Ringgit | Not Designated as Hedging Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency exchange forward contracts | 0 |  |  | RM 0 |  |  |  | 60 |  |  | RM 246 |  |  |
Estimate of Fair Value Measurement [Member] | Recurring Basis | Level 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives - currency forward contract, asset | 50 |  |  |  |  |  |  | 91 |  |  |  |  |  |
Derivatives - currency forward contracts, liability | $ (227) |  |  |  |  |  |  | $ (4) |  |  |  |  |  |

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