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Share-Based Compensation (Narrative) (Details)
3 Months Ended 9 Months Ended
Nov. 12, 2015
item
shares
May 28, 2016
USD ($)
shares
May 28, 2016
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares issued under terms of the award   12,560 67,233
Performance Awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
New shares granted 231,276    
Number of individual vesting conditions | item 6    
Number of performance measures | item 2    
Performance Awards [Member] | Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Life of awards 6 years    
Unvested Share Awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation expense | $   $ 300,000 $ 300,000
Whole-share grant per eligible director | $     $ 75,000
Vesting period of awards     1 year
Employee Stock Purchase Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Price of common stock as a percent of the average fair market value     85.00%
Shares issued to employee stock purchase plan participants   12,560 34,851