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Dividend (Details) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended
Aug. 23, 2020
Aug. 25, 2019
Apr. 30, 2020
Jan. 31, 2020
Class of Stock [Line Items]        
Dividend to stockholders $ 63,639 $ 55,000    
Retained Earnings        
Class of Stock [Line Items]        
Dividend, fix amount (in dollars per share)     $ 0.08 $ 0.08