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Note 5 - Product Warranties
6 Months Ended
Apr. 30, 2015
Notes to Financial Statements  
Product Warranty Disclosure [Text Block]
(5)
Product Warranties
 
As of April 30, 2015 and October 31, 2014, the Company’s accrual for estimated product warranty claims totaled $150,000 and $100,000, respectively, and is included in accounts payable and accrued expenses. Warranty claims expense for the three months and six months ended April 30, 2015 totaled $117,336 and $156,415, respectively, and warranty claims expense for the three months and six months ended April 30, 2014 totaled $88,996 and $109,535, respectively.
 
The following table summarizes the changes in the Company’s accrual for product warranties during the six months ended April 30, 2015 and 2014:
 
 
 
Six Months Ended
 
 
 
April 30,
 
 
 
2015
 
 
2014
 
Balance at beginning of period
  $ 100,000     $ 190,000  
Liabilities accrued for warranties issued during the period
    185,083       212,255  
Warranty claims and costs paid during the period
    (106,415 )     (134,535 )
Changes in liability for pre-existing warranties during the period
    (28,668 )     (102,720 )
Balance at end of period
  $ 150,000     $ 165,000