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Note 3 - Accounts Receivable (Details) - Accounts receivable (USD $)
In Thousands, unless otherwise specified
Aug. 31, 2013
Nov. 24, 2012
Accounts receivable [Abstract]    
Gross accounts receivable $ 17,728 $ 17,544
Allowance for doubtful accounts (1,509) (1,789)
Accounts receivable, net $ 16,219 $ 15,755