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Inventory (Schedule of Components of Inventory) (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Jun. 30, 2019
Inventory Disclosure [Abstract]    
Component Parts $ 5,323 $ 5,229
Work in Process 1,483 1,383
Finished Goods 2,611 4,198
Total $ 9,417 $ 10,810