SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Apr. 26, 2015	Apr. 27, 2014	Apr. 28, 2013	Apr. 29, 2012
Accounts Receivable Reserve
Changes in valuation and qualifying accounts
Balance at Beginning of Year	$ 2,120	$ 2,086	$ 2,502
Charged to Costs and Expenses	79	388	522
Deductions from Reserves	(604)	(354)	(938)
Balance at End of Year	1,595	2,120	2,086
Other Receivables Reserve
Changes in valuation and qualifying accounts
Balance at Beginning of Year				1,882
Balance at End of Year	$ 1,882	$ 1,882	$ 1,882	$ 1,882

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Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

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- Definition

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- Definition

Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.

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