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Note 8 - Intangible Assets (Tables)
 9 Months Ended
Oct. 01, 2016
Notes Tables  
Schedule of Finite-Lived Intangible Assets [Table Text Block]
   
Thirty-Nine
Weeks Ended
October 1, 2016
    
Thirty-Nine
Weeks Ended
October 3, 2015
  
Beginning balance
   $ 252     $ 194  
                 
Amortization of intangibles during the
thirty-nine week period ended October 1, 2016
     (63
)
     (58
)
                 
Intangibles acquired, SDS acquisition
     -       140  
                 
Ending balance
  $ 189     $ 276