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Note 6 - Acquisitions (Tables)
12 Months Ended
Jan. 02, 2016
Notes Tables  
Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table Text Block]
Fiscal Year
 
Total
 
January 2, 2016
  $ 822  
December 31, 2016
    665  
December 30, 2017
    313  
Estimated future contingent consideration payments
  $ 1,800