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Note 11 - Commitments and Contingencies (Tables)
3 Months Ended
Apr. 01, 2018
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
   
Three
-Month P
eriod
s
E
nded
 
   
April 1
,
2018
   
April 2
,
2017
 
Accrued Warranty Obligations – Beginning
  $
149
    $
172
 
Accruals for Warranties Issued
   
14
     
7
 
Settlements Made
   
(6
)    
(24
)
Accrued Warranty Obligations – Ending
  $
157
    $
155