Amount of costs incurred to date for the specified restructuring cost, net of tax.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan, including expenses from discontinued operations, net of reversals or recoveries.

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The number of facilities sold, associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 5
-Section P
-Subsection 3, 4

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b))
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Restructuring (Details) $ in Thousands	12 Months Ended
Restructuring (Details) $ in Thousands	Apr. 30, 2016 USD ($)	Apr. 25, 2015 USD ($) facility	Apr. 26, 2014 USD ($)
Restructuring
Number of facilities sold \| facility		2
Restructuring charges
Pre-tax restructuring charges since inception of plan	$ 8,300
Restructuring charges since inception of plan, net of tax	5,400
Pre-tax restructuring expense (income)	579	$ (360)	$ 8,071
Restructuring liability	100
Continuing Operations
Restructuring charges
Pre-tax restructuring charges since inception of plan	5,100
Restructuring charges since inception of plan, net of tax	3,300
Pre-tax restructuring expense (income)	579	(371)	4,839
Continuing Operations \| Fixed asset (recoveries) write-downs
Restructuring charges
Pre-tax restructuring expense (income)	132	(987)	2,272
Continuing Operations \| Inventory (recoveries) write-downs
Restructuring charges
Pre-tax restructuring expense (income)	(43)	(578)	2,216
Continuing Operations \| Other
Restructuring charges
Pre-tax restructuring expense (income)	490	1,194	351
Discontinued Operations
Restructuring charges
Pre-tax restructuring charges since inception of plan	3,200
Restructuring charges since inception of plan, net of tax	$ 2,100
Pre-tax restructuring expense (income)		11	3,232
Discontinued Operations \| Inventory (recoveries) write-downs
Restructuring charges
Pre-tax restructuring expense (income)			1,804
Discontinued Operations \| Trade name write-down
Restructuring charges
Pre-tax restructuring expense (income)			1,265
Discontinued Operations \| Other
Restructuring charges
Pre-tax restructuring expense (income)		$ 11	$ 163