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Balance Sheet Components (Schedule of Inventory) (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Balance Sheet Components [Abstract]    
Raw materials $ 3,597 $ 2,447
Finished products 14,027 15,437
Inventory, gross 17,624 17,884
Less: Reserve for excess and obsolete (8) (33)
Inventories $ 17,616 $ 17,851