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Product Warranties - (Schedule Of Changes In Accrual For Product Warranties) (Details) (USD $)
3 Months Ended
Jan. 31, 2014
Jan. 31, 2013
Movement in Standard Product Warranty Accrual [Roll Forward]    
Balance at beginning of period $ 190,000 $ 250,000
Liabilities accrued for warranties issued during the period 104,777 139,834
Warranty claims and costs paid during the period (50,539) (30,344)
Changes in liability for pre-existing warranties during the period (84,238) (149,490)
Balance at end of period $ 160,000 $ 210,000