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Consolidated Balance Sheets (Parentheticals) (USD $)
In Thousands, except Share data, unless otherwise specified
Feb. 28, 2015
Nov. 29, 2014
Statement of Financial Position Parentheticals [Abstract]    
Allowance for Doubtful Accounts $ 9,434us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 10,246us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Preferred Stock Shares Authorized 10,045,900us-gaap_PreferredStockSharesAuthorized  
Common Stock Par Value $ 1us-gaap_CommonStockParOrStatedValuePerShare  
Common Stock Authorized 160,000,000us-gaap_CommonStockSharesAuthorized  
Common Stock Outstanding 50,408,384us-gaap_CommonStockSharesOutstanding 50,310,803us-gaap_CommonStockSharesOutstanding