Valuation and Qualifying Accounts and Reserves (Details) (USD $) In Thousands	12 Months Ended
Apr. 27, 2011	Apr. 28, 2010	Apr. 29, 2009
Trade Receivables [Member]
VALUATION AND QUALIFYING ACCOUNTS AND RESERVES
Valuation Reserves, Balance at beginning of period	$ 10,196	$ 10,233	$ 13,255
Charged to Cost and Expense	1,997	2,158	4,913
Deductions	2,053	2,575	6,585
Exchange	769	380	(1,350)
Valuation Reserves, Balance at end of period	10,909	10,196	10,233
Other Receivables [Member]
VALUATION AND QUALIFYING ACCOUNTS AND RESERVES
Valuation Reserves, Balance at beginning of period	268	1,162	2,432
Charged to Cost and Expense	203	(367)	(946)
Deductions	0	602	0
Exchange	32	75	(324)
Valuation Reserves, Balance at end of period	$ 503	$ 268	$ 1,162

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

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 SEC
-Name Regulation S-X (SX)
-Number 210
-Section 09
-Article 12

+ Details

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- Definition

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 09
-Article 12

+ Details

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- Definition

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 09
-Article 12

+ Details

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 09
-Article 12

+ Details

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