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Note 14 - Accumulated Other Comprehensive Income (Loss) (Tables)
 12 Months Ended
Jun. 30, 2018
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
   
2018
    
2017
  
Foreign currency translation adjustment
   $
(25,013
 )   $
(25,107
 )
Unrealized pension losses, net of tax
    
(95,112
 )    
(86,646
 )
Unrealized losses on derivative instruments, net of tax
    
(1,734
 )    
(4,185
 )
Total
   $
(121,859
 )   $
(115,938
 )