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Inventories (Tables)
6 Months Ended
Dec. 31, 2019
Inventory Disclosure [Abstract]  
Inventories

 

   December 31, 2019  June 30, 2019
   (in thousands)
Raw materials  $867   $872 
Work in process   178    111 
Finished goods   990    849 
 Total inventories   2,035    1,832 
Allowance for inventory reserves   (81)   (81)
Total inventories, net of allowance  $1,954   $1,751