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Product Warranties - (Schedule Of Changes In Accrual For Product Warranties) (Details) (USD $)
9 Months Ended
Jul. 31, 2013
Jul. 31, 2012
Movement in Standard Product Warranty Accrual [Roll Forward]    
Balance at beginning of period $ 250,000 $ 175,000
Liabilities accrued for warranties issued during the period 319,638 218,454
Warranty claims and costs paid during the period (211,725) (140,592)
Changes in liability for pre-existing warranties during the period (157,913) (62,862)
Balance at end of period $ 200,000 $ 190,000