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Note 7 - Warranties (Tables)
6 Months Ended
Dec. 31, 2017
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
   
December 31
,
201
7
   
June 30,
201
7
 
Balance at beginning of year
  $
9,243
    $
9,085
 
Acquisitions and other
   
8
     
301
 
Warranty expense
   
4,775
     
9,203
 
Warranty claims
   
(4,709
)    
(9,346
)
Balance at end of period
  $
9,317
    $
9,243