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Inventories - Inventories, Net of Reserves (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
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Inventories |  |
Raw materials | $ 737 | $ 847
Finished goods | 7,101 | 10,594
Total current inventory | 7,838 | 11,441
Raw materials | 2,751 | 1,915
Finished goods | 3,532 | 4,369
Total long-term inventory | $ 6,283 | $ 6,284

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