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Note 6 - Inventories (Tables)
3 Months Ended
Sep. 30, 2019
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
    September 30, 2019     June 30, 2019  

Raw materials

  $ 46,315     $ 43,117  

Work in process

    28,672       28,120  

Finished goods

    23,372       17,408  

Total

  $ 98,359     $ 88,645