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Shares Repurchased and Dividends - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Oct. 23, 2019
Oct. 22, 2019
Jan. 02, 2019
Nov. 30, 2019
Nov. 24, 2018
Equity, Class of Treasury Stock [Line Items]          
Stock Repurchased During Period, Value     $ 100,000 $ 9,973  
Shares repurchased (in shares)       50,600  
Total cost of shares repurchased divided by the total number of shares repurchased       $ 197.11  
Class B Common Stock          
Equity, Class of Treasury Stock [Line Items]          
Quarterly dividend amount (in dollars per share) $ 0.20 $ 0.09   0.20 $ 0.0900
Common Stock          
Equity, Class of Treasury Stock [Line Items]          
Quarterly dividend amount (in dollars per share) $ 0.25 $ 0.1125   $ 0.25 $ 0.1125
Shares repurchased (in shares)       51,000