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Inventories and Significant Suppliers - Summary of Inventories (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
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Inventory Disclosure [Abstract] |  |
Raw materials | $ 59,409 | $ 56,352
Components | 18,925 | 24,599
Work in process | 5,240 | 1,526
Finished goods | 58,669 | 62,658
Inventories | $ 142,243 | $ 145,135

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