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Note J - Pension Liability (Tables)
9 Months Ended
Sep. 30, 2018
Notes Tables  
Schedule of Net Benefit Costs [Table Text Block]
   
Nine
months ended
September
30,
 
   
2018
   
2017
 
Components of net periodic benefit cost:
               
Service cost and amortization of loss
  $
18
    $
19
 
Interest cost
   
12
     
10
 
                 
Net periodic benefit cost
  $
30
    $
29