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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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