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SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Apr. 27, 2013
Apr. 28, 2012
Apr. 30, 2011
Movement in Valuation Allowances and Reserves [Roll Forward]      
Deductions   $ (46,200)  
Allowance for Doubtful Accounts, Deducted from Accounts Receivable [Member]
      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Year 22,254 23,435 19,621
Charged to Cost and Expenses 495 3,508 5,612
Charged to Other Accounts 0 0 0
Deductions (1,142) [1] (4,689) [1] (1,798) [1]
Balance at End of Year 21,607 22,254 23,435
Allowance for Deferred Tax Assets [Member]
      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Year 8,258 52,613 57,976
Charged to Cost and Expenses 131 160 4,582
Charged to Other Accounts (1,572) [2] 1,687 [2] (8,391) [2]
Deductions (198) [3] (46,202) [3] (1,554) [4]
Balance at End of Year $ 6,619 $ 8,258 $ 52,613
[1] Deductions represented uncollectible accounts written off less recoveries of accounts receivable written off in prior years.
[2] Represents impact of adjusting gross deferred tax assets.
[3] Valuation allowance release.
[4] Represents utilization of loss carryovers.