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Business And Credit Concentrations, Major Customers And Geographic Information (Schedule Of Revenue Attributed To United States And All Other Countries) (Details) (USD $)
3 Months Ended 12 Months Ended
Oct. 31, 2013
Jul. 31, 2013
Apr. 30, 2013
Jan. 31, 2013
Oct. 31, 2012
Jul. 31, 2012
Apr. 30, 2012
Jan. 31, 2012
Oct. 31, 2013
Oct. 31, 2012
Oct. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Total net sales $ 19,244,066 $ 19,601,919 $ 19,124,600 $ 17,295,453 $ 22,134,429 $ 22,003,689 $ 22,051,197 $ 17,334,015 $ 75,266,038 $ 83,523,330 $ 73,339,591
United States [Member]
                     
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Total net sales                 52,931,288 62,010,259 55,575,212
Outside the United States [Member]
                     
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Total net sales                 $ 22,334,750 $ 21,513,071 $ 17,764,379