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Common stock transactions (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
May 27, 2020
Dec. 03, 2019
May 01, 2020
May 03, 2019
Common stock transactions        
Aggregate purchase price     $ 63,080 $ 199,986
Cash dividend paid (in dollars per share)     $ 0.36 $ 0.32
Subsequent event        
Common stock transactions        
Cash dividend declared (in dollars per share) $ 0.36      
Common Stock        
Common stock transactions        
Shares acquired under share repurchase program     451 1,686
Aggregate purchase price     $ 395 $ 1,475
Common Stock | Pursuant to Authorized Repurchase Program        
Common stock transactions        
Common stock repurchase program, increase in the authorized amount   $ 1,000,000    
Common stock repurchase authorization   $ 8,000,000    
Shares acquired under share repurchase program     500 1,700
Aggregate purchase price     $ 63,100 $ 200,000