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Product Warranties - (Narrative) (Details) (USD $)
3 Months Ended 9 Months Ended
Jul. 31, 2013
Jul. 31, 2012
Jul. 31, 2013
Jul. 31, 2012
Oct. 31, 2012
Oct. 31, 2011
Product Warranties Disclosures [Abstract]            
Accrual for estimated product warranty claims $ 200,000 $ 190,000 $ 200,000 $ 190,000 $ 250,000 $ 175,000
Warranty claims expense $ 80,085 $ 121,076 $ 161,725 $ 155,592