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Financial Statement Details - Summary of Inventories (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Finished goods | $ 24,751 | $ 14,797
Raw materials and components | 4,641 | 11,634
Total inventories, net | $ 29,392 | $ 26,431

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