SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 24, 2021	Apr. 25, 2020	Apr. 27, 2019
Allowance for doubtful accounts, deducted from accounts receivable
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 7,541	$ 2,180	$ 1,956
Acquisitions	0	0	600
Charged/ (Credited) to Costs and Expenses	(3,319)	13,263	367
Charged/ (Credited) to Other Accounts	0	0	0
Deductions	(211)	(7,902)	(743)
Balance at End of Year	4,011	7,541	2,180
Allowance for deferred tax assets
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	2,137	2,312	1,224
Acquisitions	0	0	0
Charged/ (Credited) to Costs and Expenses	2,308	687	740
Charged/ (Credited) to Other Accounts	(950)	2	506
Deductions	0	(864)	(158)
Balance at End of Year	$ 3,495	$ 2,137	$ 2,312