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Stock-Based Compensation, Restricted Shares and RSUs (Details) - Jul. 25, 2015 - Range [Domain] - $ / shares
Total
Restricted Stock  
Stock-Based Compensation  
Granted (in shares) 89,563
Granted (in dollars per share/unit) $ 26.69
Percentage vesting each year from date of grant 25.00%
Period from grant date for first vesting 1 year
Vesting period 4 years
Restricted Stock Units | Employees  
Stock-Based Compensation  
Fair value (in dollars per unit) $ 24.98
Award common share equivalent (in shares) 1
Percentage vesting each year from date of grant 25.00%
Period from grant date for first vesting 1 year
Vesting period 4 years