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Note 7 - Goodwill (Tables)
3 Months Ended
Apr. 01, 2017
Notes Tables  
Schedule of Goodwill [Table Text Block]
   
Engineering
   
Information
Technology
   
Specialty
Health Care
   
Total
 
                                 
Balance as of April 1, 2017 and
December 31, 2016
  $
4,411
    $
5,516
    $
2,398
    $
12,325