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Summary of Significant Accounting Policies -Other Non-current Assets (Details) - USD ($)
$ in Thousands
Apr. 24, 2021
Apr. 25, 2020
Accounting Policies [Abstract]    
Investments $ 105,522 $ 102,715
Development costs of software to be sold 68,156 0
Other 21,703 19,980
Other non-current assets $ 195,381 $ 122,695