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Derivative Financial Instruments (Details) £ in Thousands, SFr in Thousands, RM in Thousands, $ in Thousands, $ in Thousands, $ in Thousands	3 Months Ended
	Aug. 03, 2019 CAD ($)	Aug. 03, 2019 AUD ($)	Aug. 03, 2019 MYR (RM)	Aug. 03, 2019 USD ($)	Aug. 03, 2019 CHF (SFr)	Aug. 03, 2019 GBP (£)	Apr. 27, 2019 CAD ($)	Apr. 27, 2019 AUD ($)	Apr. 27, 2019 MYR (RM)	Apr. 27, 2019 USD ($)	Apr. 27, 2019 CHF (SFr)	Apr. 27, 2019 GBP (£)
Derivative
Derivative term (months)	20 months
U.S. Dollars/Australian Dollars | Not Designated as Hedging Instrument
Derivative
Foreign currency exchange forward contracts		$ 2,165		$ 1,524				$ 3,772		$ 2,688
U.S. Dollars/Canadian Dollars | Not Designated as Hedging Instrument
Derivative
Foreign currency exchange forward contracts	$ 821			619			$ 821			625
U.S. Dollars/British Pounds | Not Designated as Hedging Instrument
Derivative
Foreign currency exchange forward contracts				4,747		£ 3,639				3,547		£ 2,680
U.S. Dollars/Swiss Franc | Not Designated as Hedging Instrument
Derivative
Foreign currency exchange forward contracts				0	SFr 0					927	SFr 925
U.S. Dollars/Malaysian Ringgit | Not Designated as Hedging Instrument
Derivative
Foreign currency exchange forward contracts			RM 246	60					RM 246	60
Estimate of Fair Value Measurement [Member] | Recurring Basis | Level 2
Derivative
Derivatives - currency forward contract, asset				334						91
Derivatives - currency forward contracts, liability				$ (10)						$ (4)

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Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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