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Inventories - Inventories, Net of Reserves (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Current: |  |
Raw materials | $ 1,772 | $ 1,182
Finished goods | 7,446 | 9,281
Total current inventory | 9,218 | 10,463
Long-term: |  |
Raw materials | 1,648 | 1,977
Finished goods | 1,665 | 2,613
Total long-term inventory | $ 3,313 | $ 4,590

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