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Balance Sheet Account Details (Schedule of Inventory) (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Work-in-process $ 1,331 $ 1,505
Finished goods 629 706
Total inventory, net $ 1,960 $ 2,211