XML 27 R18.htm IDEA: XBRL DOCUMENT v3.8.0.1
Summary of Significant Accounting Policies (Tables)
12 Months Ended
Oct. 31, 2017
Accounting Policies [Abstract]  
Warranty Accrual

Following is a tabular reconciliation of the changes in the warranty accrual:

 

    2017   2016
Beginning balance   $ 65,000     $ 70,000  
Warranty service provided     (236,314 )     (233,117 )
New product warranties     235,708       176,647  
Changes to pre-existing warranty accruals     5,606       51,470  
Ending balance   $ 70,000     $ 65,000