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Shareholders' Equity (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Apr. 11, 2017
Nov. 08, 2016
May 27, 2017
Nov. 26, 2016
May 28, 2016
Nov. 28, 2015
May 27, 2017
May 28, 2016
Aug. 27, 2016
Shareholders Equity [Line Items]                  
Stock-based compensation expense     $ 700   $ 600   $ 2,200 $ 1,800  
Dividends paid per common share (in dollars per share)     $ 0.10   $ 0.10   $ 0.30 $ 0.30  
Dividends declared per common share (in dollars per share)     $ 0.10            
Accrued dividend     $ 3,184       $ 3,184   $ 0
Oct 11 2016 Grant [Member] | Management [Member] | Restricted Stock [Member]                  
Shareholders Equity [Line Items]                  
Issuance of stock (in shares)       97,600          
October 13 2015 Grant [Domain] | Management [Member] | Restricted Stock [Member]                  
Shareholders Equity [Line Items]                  
Issuance of stock (in shares)           204,200      
Grand Design [Member]                  
Shareholders Equity [Line Items]                  
Shares issued for acquisition   4,586,555              
Acquisition shares sold 2,293,277