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Note 11 - Commitments and Contingencies (Tables)
 3 Months Ended
Apr. 02, 2017
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
 
 
Three month periods ended
 
 
 
April 2,
2017
 
 
March 27,
2016
 
Accrued warranty obligations – beginning
   $
172
     $
192
  
Accruals for warranties issued
    
7
      
10
  
Settlements made
    
(24
 )    
(22
 )
Accrued warranty obligations – ending
   $
155
     $
180