SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2016	Apr. 25, 2015	Apr. 26, 2014
Allowance for doubtful accounts, deducted from accounts receivable
Movement in Valuation Allowances and Reserves
Balance at Beginning of Year	$ 4,622	$ 12,368	$ 21,607
Charged to Costs and Expenses	(664)	(2,206)	(2,926)
Deductions	(813)	(5,540)	(6,313)
Balance at End of Year	3,145	4,622	12,368
Allowance for deferred tax assets
Movement in Valuation Allowances and Reserves
Balance at Beginning of Year	4,322	4,700	6,619
Charged to Costs and Expenses			(135)
Charged to Other Accounts	(358)	39
Deductions	(339)	(417)	(1,784)
Balance at End of Year	$ 3,625	$ 4,322	$ 4,700