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Stock-Based Compensation - Restricted Stock and RSUs (Details) - Restricted Stock
3 Months Ended
Jul. 29, 2017
$ / shares
shares
Stock-Based Compensation  
Granted (in shares) | shares 102,662
Granted (in dollars per share/unit) | $ / shares $ 27.25
Percentage vesting each year from date of grant 25.00%
Period from grant date for first vesting 1 year
Vesting period 4 years