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Note 12 - Retirement Benefits (Tables)
3 Months Ended
Sep. 30, 2018
Pension Plan [Member]  
Notes Tables  
Schedule of Net Benefit Costs [Table Text Block]
   
U.S. Plans
   
Non-U.S. Plans
 
   
Three Months Ended
   
Three Months Ended
 
   
September 30,
   
September 30,
 
   
2018
   
2017
   
2018
   
2017
 
Service cost
  $
1
    $
1
    $
9
    $
9
 
Interest cost
   
2,586
     
2,520
     
254
     
254
 
Expected return on plan assets
   
(3,385
)    
(3,354
)    
(228
)    
(231
)
Recognized net actuarial loss
   
1,030
     
1,145
     
86
     
229
 
Amortization of prior service cost
   
-
     
-
     
-
     
(8
)
Net periodic benefit cost
  $
232
    $
312
    $
121
    $
253