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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 02, 2017
Sep. 02, 2017
Accounts receivable, allowance for doubtful accounts $ 13,385 $ 13,278
Preferred stock, par value $ 0.001 $ 0.001
Preferred stock, shares authorized 5,000,000 5,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Class A treasury stock, at cost, shares 9,010,839 8,972,729
Class A Common Stock [Member]    
Common stock, votes per share 1  
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 100,000,000 100,000,000
Common stock, shares issued 54,063,976 53,513,806
Class B Common Stock [Member]    
Common stock, votes per share 10  
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 50,000,000 50,000,000
Common stock, shares issued 11,402,636 11,850,636
Common stock, shares outstanding 11,402,636 11,850,636