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Note 9 - Warranties (Tables)
3 Months Ended
Sep. 30, 2018
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
   
September
3
0
,
201
8
   
June 30,
201
8
 
Balance at beginning of year
  $
4,966
    $
4,667
 
Acquisitions and other
   
(117
)    
(138
)
Warranty expense
   
831
     
6,248
 
Warranty claims
   
(1,043
)    
(5,811
)
Balance at end of period
  $
4,637
    $
4,966