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Note 9 - Warranties (Tables)
9 Months Ended
Mar. 31, 2019
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
   
March 31,
2019
   
June 30,
2018
 
Balance at beginning of year
  $
4,966
    $
4,667
 
Acquisitions and other
   
(139
)    
(138
)
Warranty expense
   
3,773
     
6,248
 
Warranty claims
   
(3,577
)    
(5,811
)
Balance at end of period
  $
5,023
    $
4,966