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Income Taxes - Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Apr. 25, 2020
Apr. 27, 2019
Apr. 28, 2018
Income Tax Disclosure [Abstract]      
Foreign earnings reinvested $ 41,200    
Potential deferred tax attributable to earnings 1,300    
Deferred tax attributable to foreign earnings reinvested 1,316 $ 0  
Future taxable income 65,500    
Decrease in valuation allowance for deferred tax assets (175)    
Remaining valuation allowance 2,137 2,312  
Gross unrecognized tax benefit 1,000    
Accrued interest and penalties 300 300  
Recognition of unrecognized tax benefit that would decrease the effective tax rate 900    
Cash paid for taxes (net of refunds received) $ 24,700 $ 23,800 $ 37,100