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Note 3 - Accounts Receivable (Details) - Accounts Receivable (USD $)
In Thousands, unless otherwise specified
May 31, 2014
Nov. 30, 2013
Accounts Receivable [Abstract]    
Gross accounts receivable $ 16,492 $ 17,687
Allowance for doubtful accounts (1,535) (1,607)
Accounts receivable, net $ 14,957 $ 16,080