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Stock-Based Compensation - Restricted Stock (Details) - Restricted Stock
3 Months Ended
Jul. 27, 2019
$ / shares
shares
Stock-Based Compensation  
Number of shares or units granted | shares 166,399
Fair value per share (in dollars per share) | $ / shares $ 30.24
Percentage vesting each year from date of grant 25.00%
Period from grant date for first vesting 1 year
Vesting period 4 years