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Note 12 - Retirement Benefits (Tables)
6 Months Ended
Dec. 31, 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
 
   
December 31,
   
December 31,
 
   
2018
   
2017
   
2018
   
2017
 
Service cost
  $
1
    $
1
    $
9
    $
9
 
Interest cost
   
2,586
     
2,520
     
249
     
259
 
Expected return on plan assets
   
(3,385
)    
(3,354
)    
(225
)    
(235
)
Recognized net actuarial loss
   
1,030
     
1,145
     
84
     
234
 
Amortization of prior service cost
   
-
     
-
     
-
     
(9
)
Net periodic benefit cost
  $
232
    $
312
    $
117
    $
258
 
   
U.S. Plans
   
Non-U.S. Plans
 
   
Six Months Ended
   
Six Months Ended
 
   
December 31,
   
December 31,
 
   
2018
   
2017
   
2018
   
2017
 
Service cost
  $
2
    $
2
    $
17
    $
18
 
Interest cost
   
5,171
     
5,040
     
503
     
514
 
Expected return on plan assets
   
(6,771
)    
(6,707
)    
(453
)    
(466
)
Recognized net actuarial loss
   
2,061
     
2,290
     
170
     
463
 
Amortization of prior service cost
   
-
     
-
     
-
     
(17
)
Net periodic benefit cost
  $
463
    $
625
    $
237
    $
512