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Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	3 Months Ended
	Jul. 29, 2017	Jul. 30, 2016	Apr. 29, 2017	Apr. 30, 2016
Accounting pronouncements adopted in fiscal 2018
Unrecognized excess tax benefits from share-based payments			$ 0
Cash flows from financing activities	$ (16,517)	$ (16,582)
Cash flows from operating activities	19,508	35,753
Cash, cash equivalents and restricted cash	125,591	126,142	$ 150,859	$ 121,335
Net cash provided by (used for) investing activities	(29,110)	(14,480)
Operating income	16,298	22,458
Other income (expense), net	$ 1,749	(762)
Accounting Standards Update 2016-09 - Stock Compensation
Accounting pronouncements adopted in fiscal 2018
Cash flows from financing activities		1,700
Cash flows from operating activities		(1,700)
Accounting Standards Update 2016-18 - Restricted Cash | Early Adoption, Effect
Accounting pronouncements adopted in fiscal 2018
Cash, cash equivalents and restricted cash		9,000		$ 9,000
Accounting Standards Update 2016-18 - Restricted Cash | Maximum | Early Adoption, Effect
Accounting pronouncements adopted in fiscal 2018
Net cash provided by (used for) investing activities		100
Accounting Standards Update 2017-07 - Pension Costs | Early Adoption, Effect
Accounting pronouncements adopted in fiscal 2018
Operating income		700
Other income (expense), net		$ (700)

X

- Definition

Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 24
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3521-108585

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