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Note 7 - Product Warranties (Tables)
6 Months Ended
Mar. 28, 2015
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
   
Six Months Ended
 
   
March 28,
   
March 29,
 
   
2015
   
2014
 
Accrued liability at beginning of period
  $ 257,860     $ 318,824  
Increase in reserve
    135,342       87,597  
Repairs and replacements
    (106,346 )     (120,253 )
Accrued liability at end of period
  $ 286,856     $ 286,168