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Note J - Pension Liability (Tables)
6 Months Ended
Jun. 30, 2018
Notes Tables  
Schedule of Net Benefit Costs [Table Text Block]
   
Six months ended June 30,
 
   
201
8
   
201
7
 
Components of net periodic benefit cost:
               
Service cost and amortization of loss
  $
12
    $
13
 
Interest cost
   
8
     
7
 
                 
Net periodic benefit cost
  $
20
    $
20