Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 24, 2021	Apr. 27, 2019	Apr. 25, 2020
Income Tax Disclosure [Abstract]
Tax Cuts and Jobs Act, re-measurement period benefit		$ 2,355
Tax Cuts and Jobs Act, reduction to the transition tax		331
Tax Credit Carryforward [Line Items]
Foreign net operating loss carryforwards	$ 15,960
Gross unrecognized tax benefits	10,866	$ 13,035	$ 11,740
Deferred tax assets, deductibility of gross liabilities	2,055		2,113
Interest and penalties	2,026		$ 1,968
Increase in interest and penalties expense	$ 218
Foreign Tax Credit Carryforward
Tax Credit Carryforward [Line Items]
Expiration period	5 years