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Note 10 - Retirement Benefits (Tables)
9 Months Ended
Mar. 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
 
   
March 31
,
   
March 31
,
 
   
201
8
   
201
7
   
201
8
   
201
7
 
Service cost
  $
1
    $
1
    $
9
    $
9
 
Interest cost
   
2,520
     
2,613
     
269
     
250
 
Expected return on plan assets
   
(3,354
)    
(3,440
)    
(244
)    
(282
)
Recognized net actuarial loss
   
1,145
     
1,190
     
242
     
249
 
Amortization of prior service cost
   
-
     
-
     
(9
)    
(12
)
Net periodic benefit cost
  $
312
    $
364
    $
267
    $
214
 
   
U.S. Plans
   
Non-U.S. Plans
 
   
Nine
Months Ended
   
Nine
Months Ended
 
   
March 31
,
   
March 31
,
 
   
201
8
   
201
7
   
201
8
   
201
7
 
Service cost
  $
3
    $
2
    $
27
    $
28
 
Interest cost
   
7,560
     
7,838
     
783
     
764
 
Expected return on plan assets
   
(10,061
)    
(10,321
)    
(710
)    
(861
)
Recognized net actuarial loss
   
3,435
     
3,571
     
705
     
760
 
Amortization of prior service cost
   
-
     
-
     
(26
)    
(36
)
Net periodic benefit cost
  $
937
    $
1,090
    $
779
    $
655