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Note 5 - Sale of Business Component (Tables)
9 Months Ended
Sep. 30, 2017
Notes Tables  
Condensed Income Statement [Table Text Block]
   
Three Months Ended
Sept
30
,
   
Nine
Months Ended
Sept.
30,
 
   
201
7
   
201
6
   
201
7
   
201
6
 
                                 
Pre-tax profit related to project management business sold
  $
-
    $
37
    $
70
    $
148