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Note 3 - Revenue Recognition (Tables)
 9 Months Ended
Sep. 29, 2018
Notes Tables  
Disaggregation of Revenue [Table Text Block]
   
September 29,
2018
    
September 30,
2017
  
Engineering:
                
Time and Material
   $
56,639
     $
52,843
  
Fixed Fee
    
5,773
      
8,674
  
Total Engineering
   $
62,412
     $
61,517
  
                 
Specialty Health Care:
                
Time and Material
   $
59,457
     $
47,554
  
Permanent Placement Services
    
1,142
      
1,658
  
Total Specialty Health Care
   $
60,599
     $
49,212
  
                 
Information Technology:
                
Time and Material
   $
21,875
     $
24,671
  
Permanent Placement Services
    
195
      
280
  
Total Information Technology
   $
22,070
     $
24,951
  
    $
145,081
     $
135,680