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Inventory (Notes)
12 Months Ended
Jun. 30, 2021
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block] Inventories
December 31,
June 30,
(in thousands)20212021
Inventories, net:
        Raw Material$855 833 
        Work-In-Process117 171 
        Finished Goods824 773 
Total inventories$1,796 $1,777 
Allowance for obsolete inventory(350)(360)
Inventories, net$1,446 $1,417