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Note 13 - Comprehensive Income (Loss) (Tables)
 9 Months Ended
Mar. 31, 2018
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
   
March 31,
2018
    
June 30,
201
7
  
Foreign currency translation adjustment
   $
(10,959
 )   $
(25,107
 )
Unrealized pension losses, net of tax
    
(101,375
 )    
(86,646
 )
Unrealized losses on derivative instruments, net of tax
    
(2,933
 )    
(4,185
 )
Accumulated other comprehensive loss
(1)
   $
(115,267
 )   $
(115,938
 )