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Note 2 - Inventories (Tables)
6 Months Ended
Dec. 31, 2019
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   
December 31,
   
June 30,
 
   
2019
   
2019
 
                 
Raw materials
  $
5,716
    $
4,550
 
Work-in-process
   
2,703
     
2,325
 
Finished goods
   
870
     
1,944
 
Total
  $
9,289
    $
8,819