XML 18 R29.htm IDEA: XBRL DOCUMENT v3.2.0.727
Note 5 - Product Warranties - Changes in Accrual for Product Warranties (Details) - USD ($)
9 Months Ended
Jul. 31, 2015
Jul. 31, 2014
Balance at beginning of period $ 100,000 $ 190,000
Liabilities accrued for warranties issued during the period 205,376 299,477
Warranty claims and costs paid during the period (134,643) (250,965)
Changes in liability for pre-existing warranties during the period 24,267 (103,512)
Balance at end of period $ 195,000 $ 135,000