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Note 8 - Warranties (Tables)
3 Months Ended
Sep. 30, 2020
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
  September 30, 2020  June 30, 2020 

Balance at beginning of year

 $1,781  $1,911 

Acquisitions and other

  124   (86)

Warranty expense

  710   1,783 

Warranty claims

  (618)  (1,827)

Balance at end of period

 $1,997  $1,781