Other Compensation Plans (Details) $ in Thousands	6 Months Ended
Oct. 23, 2015 USD ($) hour	Apr. 24, 2015 USD ($)
Compensation and Retirement Disclosure [Line Items]
Minimum hours of service required for 401(k) eligibility (at least) \| hour	1,000
Other noncurrent compensation arrangements	$ 1,675	$ 958
Total deferred compensation liabilities	22,026	30,736
Less current portion (1)	(4,286)	(8,255)
Noncurrent deferred compensation liabilities	17,740	22,481
BEEDP and BEDDP Plans
Compensation and Retirement Disclosure [Line Items]
Liability for deferred cash obligations	13,089	17,904
Liability for deferred share-based obligations in BEEDP and BEDDP Plans	728	2,676
SERP Plan
Compensation and Retirement Disclosure [Line Items]
Liability for deferred cash obligations	$ 6,534	$ 9,198

Defined Contribution Plan, Hours of Service Required for Eligibility

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for deferred compensation arrangements. Represents currently earned compensation under cash arrangements (such as a profit-sharing plan, rabbi trust, and employee contract--excluding equity-based arrangements) that is not actually paid until a later date.

+ References

No definition available.

+ Details

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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer).

+ References

No definition available.

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable within one year (or the operating cycle, if longer). Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 710

-SubTopic 10

-Section 30

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20028-108363

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 710

-SubTopic 10

-Section 25

-Paragraph 9

-URI http://asc.fasb.org/extlink&oid=6409733&loc=d3e19512-108361

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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

+ References

No definition available.

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Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements.

+ References

No definition available.

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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.

+ References

No definition available.

+ Details

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Aggregate carrying value as of the balance sheet date of the liabilities for deferred compensation arrangements payable after one year (or the operating cycle, if longer) other than those specified elsewhere in the taxonomy.

+ References

No definition available.

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