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Selected Balance Sheet Information (Schedule of Inventory) (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Selected Balance Sheet Information [Abstract]    
Raw material $ 2,139 $ 1,593
Work-in-process 917 482
Finished goods 3,008 1,805
Total inventory $ 6,064 $ 3,880