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Note 7 - Product Warranties (Tables)
6 Months Ended
Apr. 02, 2016
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
   
Six Months Ended
 
   
April 2,
2016
   
March 28,
2015
 
Accrued liability at beginning of period
  $ 291,980     $ 257,860  
Increase in reserve
    144,857       135,342  
Repairs and replacements
    (122,763 )     (106,346 )
Accrued liability at end of period
  $ 314,074     $ 286,856