Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

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+ References

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- Definition

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+ References

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- Definition

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+ References

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Derivative Financial Instruments (Details) € in Thousands, £ in Thousands, SGD in Thousands, CAD in Thousands, AUD in Thousands, $ in Thousands	Jul. 29, 2017 CAD	Jul. 29, 2017 AUD	Jul. 29, 2017 USD ($)	Jul. 29, 2017 EUR (€)	Jul. 29, 2017 SGD	Jul. 29, 2017 GBP (£)	Apr. 29, 2017 CAD	Apr. 29, 2017 AUD	Apr. 29, 2017 USD ($)	Apr. 29, 2017 EUR (€)	Apr. 29, 2017 SGD	Apr. 29, 2017 GBP (£)
U.S. Dollars/Australian Dollars
Derivative
Foreign Currency Exchange Forward Contracts:		AUD 4,842	$ 3,632					AUD 10,669	$ 7,984
U.S. Dollars/Canadian Dollars
Derivative
Foreign Currency Exchange Forward Contracts:	CAD 1,319		998				CAD 345		256
U.S. Dollars/British Pounds
Derivative
Foreign Currency Exchange Forward Contracts:			3,283			£ 2,633			4,936			£ 3,959
U.S. Dollars/Singapore Dollars
Derivative
Foreign Currency Exchange Forward Contracts:			0		SGD 0				605		SGD 844
U.S. Dollars/Euros
Derivative
Foreign Currency Exchange Forward Contracts:			1,688	€ 1,498					528	€ 491
Estimate of Fair Value Measurement [Member] \| Recurring Basis \| Level 2
Derivative
Derivatives - currency forward contract, asset			31						64
Derivatives - currency forward contracts, liability			$ 602						$ 277